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Product Data
Multichannel Analysis Systems — Types 3550, 3555, 3556, 35572035, 2816, 3015 to 3020, 3023, 3106, 3107, 3156, 3157, 5955, 7520, 7521, 7639, 7640, 7649, 7670 to 7672, 7674, ZZ 0220
USES:

General purpose signal and system analysis of mechanical, electrical and mechatronic systems

Structural and modal testing— multi-input multi-output random testing— normal-mode testing

Mechanical system troubleshooting— operational deflection shape measurement

Rotating and reciprocating machine analysis and fault diagnosis

Servo mechanism and system analysis

Quality control testing and analysis

Acoustic and electroacoustic system analysis

Sound intensity measurement, including multi-directional sound intensity

Sound power measurement

Noise-control investigation

Educational — behaviour of dynamic systems and measurement procedures

FEATURES:

Modular, expandable system (2 to 16 channels)— variable transform size, 50 to 25600 line FFT— multifunction recording and 3D map display— built-in digital order tracking— 1/n-octave analysis (n=1 to n=24)— time capture and time history modes— envelope and phase demodulation analysis

1-channel 25 kHz or 100 kHz input modules— inputs for accelerometers, microphones, sound

intensity and tachometer probes, remote control

4-channel 25 kHz input modules— Direct or CCLD inputs— Up to 8 channels using 2035 alone (no 2816)

Generator output; sine, multisine, random, pseudo-random (continuous, burst and swept modes)

User-definable autosequences, functions, and generator signals

PC/MS-DOS disk storage for measurements, setups, user-defined functions and autosequences

IEEE–488/IEC625–1 interface, RS–232 output for hard copy on plotters, printers and laser printers

Brüel & Kjær B K

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Signal Analyzer Unit 2035

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Generator & Sampling Module

3106

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Introduction

Multichannel Analysis System Type3550 is a modular, FFT-based systemfor signal and system analysis. Type3550 offers analysis tools for all ma-jor applications in the areas of vibra-tion, acoustics, structural and modaltesting and analysis, electroacousticsand servo-analysis.

Dual-channel software provides thefundamental tools for single- anddual-channel spectrum averaging fornarrow-band, 1/n-octave or correla-tion analysis. Signal enhancement forsynchronous time-domain averagingis also available. Acoustical A-, B-, C-,or D-weighting can be applied in thefrequency domain.

Extended software includes thetime capture measurement mode, foranalysis of non-stationary signalsand high-resolution spectra, as wellas tools for analysing sets of func-tions (multifunction measurement

mode, 3D mapping, averaged func-tions and slices). For analysis of ro-tating machinery and run-up/coast-down tests, order tracking is provid-ed.

Amplitude probability analysis isalso provided with extended analysissoftware. A large set of statisticalmeasures is available, including anyuser-specified moment or normalizedmoment.

Tools for envelope analysis, for de-tection of faults in rolling elementbearings, and tools for angular vibra-tion measurements are also available(amplitude and phase demodulationmodes).

For measurements for which anal-ysis cannot be performed immediate-ly, time history recording is provided.Data is sent to disk or via an inter-face to an external controller for anal-ysis later.

Multichannel analysis softwarepackages make it possible to measurein up to 16 channels, or allow excita-

tion with more than one generator.Multichannel measurements of up toeight channels can be performed us-ing Type 2035 alone, or using a singleMultichannel Data Acquisition UnitType 2816. Measurements with morethan eight channels require two2816s.

A wide range of application soft-ware is available for specialized anal-ysis applications with Type 3550.

Extensive on-line help (in English,German, or French) is available tohelp you select the setup options thatare appropriate for your application.

The 3550’s built-in function set anddefault capability can be extended bydefining your own functions, wave-forms and variables. In addition, au-tosequence programs can be written(or simply keyed in) that will dedicatethe 3550 to any number of personal-ized applications, or simply automatetedious measurement and analysisprocedures.

Fig.1 Hardware and software components of Multichannel Analysis System Type 3550

2

System configurations range froma dual-channel analyzer with100 kHz bandwidths, up to a 16-chan-nel system with measurement band-widths up to 12.8 kHz.

Modular design of both hardwareand software ensures that a 3550that is configured for the special re-quirements of one application, caneasily be re-configured or expandedto meet future requirements.

Modularity

Multichannel Analysis System Type3550 is configured from the range ofmainframes, modules and softwarepackages described in this ProductData. All configurations require theSignal Analyzer Unit Type 2035,Dual-channel Analysis Software Type7649, a zoom processor, input mod-ules, and a sampling or a generator/sampling module.

System Overview

HardwareThe 3550 system is composed of anumber of hardware elements:

Signal Analyzer Unit Type 2035is a mainframe that houses the mem-ories and hardware used for data col-lection, processing, filtering, andzooming. In addition, it contains theCPU platform for software execution.The analyzer has a display screen,control keys and disk drive. An op-tional keyboard can be connected foreasy alphanumeric input.

For applications based on the 2035alone, at least two input channels are

SetupDisplay

MeasurementSetup

required. For applications which re-quire generated waveforms, Genera-tor and Sampling Module Type 3106is used.

For multichannel configurations,the 2035 must either be fitted withat least one 4-channel Input ModuleType 3023, or an interface card al-lowing the analyzer to be connectedto one or two 2816 units.

Multichannel Data AcquisitionUnit Type 2816 is a mainframe unit

CursorSetup

that houses the modules for mul-tichannel configurations which re-quire frequency spans of greater than25.6 kHz, or more than eight chan-nels, or for applications which requiremore than one generator. Up to two2816 units can be connected to a 2035through a serial interface.

Each 2816 has 11 module locations(slots). Slot 0 must always contain aninterface module. Thereafter, up to 10modules can be installed from a max-imum allowable number of eight sin-gle-channel 25 kHz input modules,four 100 kHz input modules, four gen-erator modules, two sound intensitymodules, and two signal output mod-ules. A 3550 system with 2816 unitscan operate a maximum of 16 inputchannels, up to eight generators, andup to four sound intensity or signaloutput modules.

Input Modules can have band-widths of either 25 kHz or 100 kHz.Single-channel input modules areequipped with direct, accelerometer(charge) and microphone inputs, andcan be set grounded or floating. 4-channel input modules support bothdirect and CCLD (Constant CurrentLine Drive – used with theBrüel & Kjær DeltaTron line of ac-

Fig.2 Multichannel Analysis System Type 3550 can analyse up to 16 data channels andprovide up to 8 generator outputs

Fig.3 The measurement setup defines the type of measurement to be made; the displaysetup determines how the results are presented. Setups are altered by field entry on thescreen. They can be saved in non-volatile memory and stored on disk

3

(a)

(c) (d)

(b)

celerometers) inputs. Grounded orfloating can be specified in the soft-ware. All input modules have a dy-namic range of at least 80 dB.

Single-channel input modules canalso support CCLD connections via aZG 0328 adaptor.

Sound Intensity Modules can beconnected to one or two sound inten-sity probes.

Generator Modules provide arange of signals, including single-and dual-sine, multisine, random,pseudo-random, periodic random,pulse and user-definable signals. Apink filter can be applied to the out-put, and appropriate signals can beproduced in swept, burst, and speci-fied burst repetition modes.

Output Modules facilitate outputfor storage of analog time historydata and allow monitoring of analogsignals during testing.

SoftwareAll 3550 system operations are im-plemented by software that is sup-plied on disks and loaded into the2035 through its disk drive. Eachsoftware type has an associated pro-tection key which must be installedin the program key module inside the2035.

Dual-channel Analysis SoftwareType 7649 is essential for all 3550configurations since it implements allbasic system operations, the key-board, display, controls and disk driveinterface. It also implements the au-tomatic calibration facility, user-de-finable functions, autosequenceprograms and “Help”.

Single- and dual-channel spectrumaveraging is offered for frequency orfor correlation analysis, as well assingle- and dual-channel 1/n-octavespectrum averaging. Signal enhance-

4

ment is also offered with dual-chan-nel software.

Analysis results can be displayedusing a selection of display functionsand parameters. A wide selection ofcursors is available for identificationof harmonic and sideband families,and for special calculations.

Single- and dual-channel spectrumanalysis is useful for signal- and sys-tem-analysis of mechanical and elec-trical systems, structural and modaltesting, mechanical system trouble-shooting and operational deflectionshape measurements, as well as qual-ity-control testing and analysis.

1/n-octave spectrum analysis modedisplays the measured data opti-mized on a logarithmic frequencyaxis (Fig.5). All frequency domainfunctions are available in this mode,making it invaluable for acoustic andelectroacoustic analysis, and for anal-ysis of servo-mechanisms and sys-tems.

Extended Analysis SoftwareType 7639 increases the applicationrange of the Type 3550. Extendedsoftware offers these additionalmeasurement modes: Tracking, mul-tifunction analysis, time capture,time history, amplitude probability,and amplitude and phase demodula-tion. As well as the additional meas-urement modes offered by extendedsoftware, the display capability is ex-tended to include 3D (three-dimen-sional) “waterfall” map displays(Fig.6) and a number of special cur-sor functions for display manipula-tion and information extraction.

Tracking provides analysis interms of order spectra and is impor-tant for analysing rotating machines,for measuring distortion on electroa-coustic transducers and similar ap-plications.

Fig.4 Examples of display formats:(a) Single graph (with menu) (b) Full screen display(c) Dual graph display (d) System setup display

Fig.5 Narrow-band and 1/n-octave spectra, the value of n isselectable from 1 to 24

Fig.6 3D Map (Waterfall) display and a single function of a ma-chine “run-down” measurement

In multifunction mode, data is col-lected in a multibuffer as sets ofmeasured functions. This measure-ment mode is very useful for analysisof non-stationary phenomena, forrun-up/coast-down testing (Fig.7), foranalysis of reciprocating machines,and for analysis of non-linear sys-tems.

Time capture stores long time sig-nals and is used for non-stationarysignals, or for high-resolution analy-sis of stationary signals (Fig.8).

Time history stores time signals onthe internal disk, or transfers themover the IEEE bus to an externalcomputer.

Amplitude probability is useful foranalysing statistical properties of sig-nals.

Amplitude demodulation (alsocalled envelope analysis) can be usedto detect and diagnose faults in rollerbearings. Angular vibrations ofshafts can be analysed using phasedemodulation.

The added display function 3D map(waterfall display) is used to showdata from time capture or multifunc-tion measurements (or time historydata which has been analysed usingtime capture or multifunction mode)

Delta functions or delta slices canbe calculated and displayed.

Software Types 7670, 7671, 7672are extended software subsets forspecialized applications. TrackingAnalysis Software Type 7670 in-cludes the extended software featurestracking and time history. SignalAnalysis Software Type 7671 in-cludes the extended software featurestime capture, multifunction, and timehistory. Vibration Diagnostic Soft-ware Type 7672 includes the extend-ed software features amplitude and

phase demodulation, amplitude prob-ability, and time history.

Multichannel Analysis SoftwareType 7640 implements the controlfunctions for measurement configura-tions, in which input modules are in-stalled in one or two 2816 units.

Multichannel software supportsmultichannel measurements in up to16 channels, with simultaneous sam-pling in all channels. Up to 8 gener-ator units can be included in aconfiguration.

Multichannel applications includemultichannel structural and modaltesting, multiple input/output ran-dom and normal-mode testing.

Multichannel software supports allmeasurement modes that are availa-ble in single- and dual-channel mode.

4/8-channel Analysis SoftwareType 7674 is for use with multichan-nel configurations which include the2035 alone and either one or two 4-channel Input Modules Type 3023.Type 7674 provides an inexpensivemultichannel functionality of up toeight channels, and a single genera-tor. The dynamic range is 80 dB andthe maximum input voltage range isslightly less than that available witha 2816 configuration. 4-channel inputmodules include four input (BNT)connectors which support direct,CCLD and Tacho inputs. In all otherways Type 7674 software providesthe same platform for multichannelmeasurements as the Type 7640 soft-ware.

Easy to use

The 3550 reduces complicated meas-urement problems to a manageable

set of steps. After the initial selectionof measurement mode, the availablemeasurement parameter set is auto-matically reduced so that only thoseparameters which are useful can beaccessed.

The analyzer’s front panel and as-sociated hard keys are clearlymarked and documented, and the on-line help facility makes it possible toget information about measurement,display and cursor fields and options.

The display screen can be manipu-lated to view a full-screen graph, inwhich only the display setup appears.In addition, you can view two graphsat once in the upper and lower tracesof the analyzer’s screen, or you cansuperimpose two graphs, and viewthem as a full-screen display.

All parameters that define systeminputs and outputs, measurementmodes and display functions are dis-played in setups on the screen andadjusted from the analyzer’s frontpanel.

Operation

Four main setup types fully controlthe measurement, display, and ma-nipulation of data:

Measurement Setup defines themeasurement mode and all measure-ment parameters such as frequencyspan, resolution, weighting, and trig-ger parameters (see Fig.3).

Display Setup defines the displayfunction, the ranges and parametersof the graph axes, and can be used tosynthesize frequency domain func-tions in 1/n octaves (where n = 1, 2,3, …, 24). Weighting functions andtheir effect can be displayed as well.

Cursor Setup includes the fieldsand options for selecting out points

Fig.7 Analysis of a machine coast-down. The first 20 orders areanalysed using tracking. The third order is extracted using adelta slice, and displayed as a Nyquist plot in the lower graph

Fig.8 A non-stationary signal is recorded in time capture mode.A part of the signal, identified by the scan cursor in the lowerdisplay, is shown as a map in the upper display

5

and portions of the data shown in thegraphs. In addition, auxiliary infor-mation fields can be used to obtainimportant information about thegraphs.

System Setups consist of anumber of screen-displayed pagesfrom which special measurement anddisplay parameters, system inputsand outputs [see Fig.4(d)], transduc-ers, conditioning and calibrationunits, and hard copy options are spec-ified. User-definable functions arealso written in the system setups.

In addition to the above-mentionedsetups, a number of user-oriented fa-cilities are available to make it easierto operate the 3550:

Automatic operation can beachieved by using an autosequenceprogram to automate the operationand measurement procedures youneed.

Calibration is made easy by usingthe ⟨Calibration⟩ key on the 2035. Itstarts an autosequence program thatautomatically calibrates the inputmodules for vibration or acousticmeasurements.

Menus are provided for all setupfields that have non-numeric options[see Fig.4(a)].

Lists of disk files or autosequenceprograms can be displayed.

On-line Help is provided with indepth descriptions of fields and op-tions. Help with selection of parame-ters is obtained, in the form of on-screen explanations, by pressing the⟨Help ⟩ key. Help is also available inFrench and German.

The IEEE/IEC Interface enablesall measured data and all setup pa-rameters to be transmitted to andfrom the system, and enables remoteoperation over the interface.

The RS–232 Interface is coupledas a “Data Terminal Equipment”(DTE) and is implemented as an out-put for hard copy devices.

Hard Copy of screen displays canbe made on graphics plotters, graph-ics recorders, laser printers and videohard copy devices.

Versatile

The 3550 system has an extensiverange of built-in display functionsand options for post-processing ofmeasured data. The system can

therefore be used for a wide range ofmeasurement and analysis applica-tions. The modularity of the systemmakes it easy to expand as new ap-plications arise.

User-definable Functions (UDFs)Specific functions or calculations thatare not built-in can be created bywriting your own post-processingfunctions and calculations as user-de-fined functions.

UDFs can be used to calculate anddisplay virtually any quantity youneed. They are simple to write on thedisplay screen using the set of math-ematical operators and operands pro-vided.

UDFs work with Booleans (true orfalse variables), real or complex sca-lars and vectors, and all the standardarithmetic operators. A comprehen-sive set of built-in functions is includ-ed, together with logical andrelational operators.

Autosequence Programs that in-clude branching and conditionals addto the versatility of the system. Byusing autosequences to control meas-urement and display parameters incombination with UDFs, the 3550 canbe programmed to produce resultsthat traditionally required the inclu-sion of a PC in the system.

The Disk Drive uses PC/MS-DOScompatible file formats and TIFF(Tagged Image File Format). Diskfiles can therefore be directly trans-ferred to external programs wherethe contents can be incorporated intoreports and presentations.

Application Software can furtherextend your system capabilities. Awide range of application software isavailable, and can be run on an ex-ternal PC using data collected on the3550. This software provides addi-tional tools for sound intensity map-ping and sound power calculations,modal analysis, operational deflec-tion shape measurements, mul-tichannel 3D mapping, and spatialtransformation of sound fields. Diskfiles containing cursor values inprinter format can be directly import-ed to spread-sheet programs.

The Dedicated Disk

The use of a personalized disk is thekey to fast, dedicated operation of3550. Using any DOS formatted disk,you can save entire measurementand display setups and data, as wellas autosequences and UDFs whichperform special tasks.

The WT 8080 is a disk which, forexample, contains a set of autose-quences and UDFs which work to-gether to make the 3550 a dedicatedsound intensity analyzer.

When your disk is loaded, your set-ups, your UDFs and your autose-quences can be recalled as required.

The power and in-depth versatilityof the 3550 becomes clear when youuse the available software tools tomake the system 100% dedicated toyour application. All you then needto do is check the input connectionsand press ⟨Start ⟩.

Starter Configurations

In order to simplify the task of de-signing a 3550 configuration from thelarge number of different possiblecombinations of 3550 modules,Brüel & Kjær offers three “starter”configurations:

Dual-channel Analysis SystemType 3555 is the cheapest system,offering a configuration for measur-ing in two-channels, using single-channel input modules, installed inthe Signal Analyzer Unit Type 2035alone.

4-channel Analysis System Type3556 provides multichannel analysiswith up to 4 signals, using single-channel input modules installed in aMultichannel Data Acquisition UnitType 2816.

4-channel Analysis System Type3557 provides multichannel analysiswith up to 4 signals, using a single4-channel input module in the SignalAnalyzer Unit Type 2035.

None of these systems includes a gen-erator.

All of the systems can be expandedby adding hardware and software asrequired for your application.

6

Specifications 3550, 3555, 3556 and 3557

COMPLIANCE WITH STANDARDS:

CE-mark indicates compliance with: EMC Directive and Low Voltage Directive.

Safety IEC 348: Safety requirements for electronic measuring apparatus.Safety class II.

EMC Emission EN 50081–1: Generic emission standard. Residential, commercial and light industry.EN 50081–2: Generic emission standard. Industrial environment.CISPR 22: Radio disturbance characteristics of information technology equipment. Class B Limits.FCC Rules, Part 15: Complies with the limits for a Class B digital device.

EMC Immunity EN 50082–1: Generic immunity standard. Residential, commercial and light industry.EN 50082–2: Generic immunity standard. Industrial environment.Note: See “EMC”.

Temperature IEC 68–2–1 & IEC 68–2–2: Environmental Testing. Cold and Dry Heat.Operating Temperature: +5 to +40°C (41°F to 104°F)Storage Temperature: −20°C to +60°C (−4°F to +140°F)IEC 68–2–14: Change of Temperature: +5 to +40°C (2 cycles, 1°C/min.)

Humidity IEC 68–2–3: Damp Heat: 20 to 90% RH (non-condensing at 40°C)

Mechanical Non-operating:IEC 68–2–6: Vibration: 0.3 mm, 20 m/s2, 10–500 HzIEC 68–2–27: Shock: 650 m/s2

Enclosure IEC 529: Protection provided by enclosures: IP 20

Modular, expandable system consisting of twomainframe units and a range of modules, unitsand softwareMAINFRAMES:2035 Signal Analyzer Unit2816 Multichannel Data Acquisition Unit MODULES FOR 2035:3018 Sampling Module3019 25kHz Input Module3020 100kHz Input Module3023 4-channel Input Module3106 Generator & Sampling Module3156 25kHz Zoom Processor3157 100kHz/Multichannel Zoom Processor7520 Multichannel Data Acquisition InterfaceZZ0220 Simulator UnitMODULES FOR 2816:3015 25kHz Input Module3016 100kHz Input Module3017 Sound Intensity Module3107 Generator Module5955 Signal Output Module7521 Signal Analyzer Interface ModuleSOFTWARE:7639 Extended Analysis Software7640 Multichannel Analysis Software7649 Dual-channel Analysis Software7670 Tracking Analysis Software7671 Signal Analysis Software7672 Vibration Diagnostic Software7674 4/8-channel Analysis SoftwareTYPE 3555 DUAL-CHANNEL ANALYSIS SYSTEM:A 3550 configuration that includes the followingelements:1 2035 Signal Analyzer Unit1 3018 Sampling Module2 3019 25kHz Input Modules1 3156 25kHz Zoom Processor1 7649 Dual-channel Analysis SoftwareTYPE 3556 4-CHANNEL ANALYSIS SYSTEM:A 3550 configuration that includes the followingelements:1 2035 Signal Analyzer Unit (including Blank

Panel FA 1141)1 2816 Multichannel Data Acquisition Unit4 3015 25 kHz Input Modules1 3157 100 kHz/Multichannel Zoom Processor1 7520 Multichannel Data Acquisition Interface1 7521 Signal Analyzer Interface Module1 7640 Multichannel Analysis Software1 7649 Dual-channel Analysis Software6 FA 1009 Blank PanelsFor specifications of the individual types refer tothe appropriate specification sectionsThe 3556 analysis system can be extended toup to 16 channels by adding Multichannel DataAcquisition Units Type 2816, with single-channelinput modules installed (Types 3015/3016).TYPE 3557 4-CHANNEL ANALYSIS SYSTEM:A 3550 configuration that includes the followingelements:1 2035 Signal Analyzer Unit1 3018 Sampling Module1 3023 4-channel Input Module1 3157 100 kHz/Multichannel Zoom Processor1 7649 Dual-channel Analysis Software1 7674 4/8-channel Analysis Software1 FA1136 Blank PanelFor specifications of the individual types, referto the appropriate specification section.Frequency Range: 25.6 kHz

Other Configurations: The analysis system canbe extended to 8 channels by adding one moreType 3023 4-channel Input Module.

The Type 3018 Sampling Module can be re-placed by a Type 3106 Generator and SamplingModule.TYPE 3550 MULTICHANNEL ANALYSIS SYSTEMNUMBER OF CHANNELS:1 to 16MAXIMUM FREQUENCY:Depends on the number of active channels andinput modules:

REAL-TIME FREQUENCY BANDWIDTH:Single-channel spectrum averaging mode, withHanning weighting, linear averaging of 801 lineautospectrum and display of autospectrum:>18 kHzDual-channel spectrum averaging mode, withHanning weighting, linear averaging of 801 linedual-autospectrum and cross-spectrum anddual-autospectrum display: > 7 kHz

EMC: Differential Surge on AC Mains Input:Max. 1 kV

Susceptibility to Disturbances Specified in EN 50082–2Measured using Cable AO 1382 (Charge) andFerrite Cable Clamp LK 0014 or Cable AO 0429(Voltage) and Ferrite Cable Clamp LK 0013.Floating measurement according to instructionmanualLF Magnetic Field: (30 A/m at 50 Hz)

Radiated RF: (3 to 10 V/m, 80% AM,1 kHz)Conducted RF: (3 to 10 V,80% AM,1 kHz)

1 Input section with max. gain and input short-circuited2 Input section with max. gain and 1 nF termination3 Sine output level ≤ 3.5 mV

Number of Channels

Maximum Frequency

Input Module

1 to 2 102.4 kHz 3016 or 3020

3 to 4 51.2 kHz 3016

5 to 8 25.6 kHz 3015, 3023

9 to 16 12.8 kHz 3015

Input/Output Level

Direct, CCLD1 < 7.5 µV

Charge2 < 7.5 fC

Preamp., Probe1 < 60 µV

Generator3 < 7.5 µV

Input/Output Level

Direct, CCLD1 < 15 µV

Charge2 < 25 fC

Preamp., Probe1 < 35 µV

Generator3 < 15 µV

7

Ordering Information

Accessories Available

Wide range of microphones, accelerometers, shakers, force-transducers and impact-hammersType 3541: Sound Intensity Calibrator Type 3583: Sound Intensity Probe Set:

includes 2 matched microphone pairs (Types 4178 and 4181), telescopic extension, etc.

Type 3584: Sound Intensity Probe Set: Includes a matched microphone pair Type 4181 and Remote Control Handle ZB 0017

LK 0013: Ferrite Cable Clamp (for BNC)LK 0014: Ferrite Cable Clamp (for Acc.)NP 0028: External keyboard for entry of

autosequence, comment line, user-definable functions and text pages

WH 2270: Preamplifier Output allows output of the conditioned input signals to BNC sockets on the rear panel of 2035, before the signals reach the anti-aliasing filters

WQ 1117: Serial to Parallel Converter to connect printers equipped with the Centronics/Parallel interface to the RS–232 serial interface on the 2035.

WL 0941: Interface cable for connecting the RS–232 receptacle on the 2035 and the WQ 1117 Serial to Parallel Converter

WH 2985: Phase match to closer tolerances on input modules of Type 3015, 3016, 3019, and 3020

ZB 0017: Remote Control Handle for remote control of measurements, with LEDs for indication of averaging, etc.

ZH 0354: Remote Control Unit for remote control of measurements and indication of level, measuring point etc., on LCD.

Extension Cables: for Intensity Probe/remote controlAO 0324: 5mAO 0325: 30mWL 0826: Specific length

Interface Cables:AO 0264: IEEE–488 to IEC 625–1, (2m)AO 0265: IEEE–488 (2m)AO 0296: RS–232

Disks:QR 1105: 10 × 31 /2″ dual-sided, high-

density micro-floppy disks

Front Panel Kits: (for converting modules:)UA 1139: 3015 to 3019 (for 2035)UA 1140: 3019 to 3015 (for 2816)UA 1141: 3016 to 3020 (for 2035)UA 1142: 3020 to 3016 (for 2816)

8

Interconnection Cables (2035 to 2816):AO 0370: Coaxial Cable for interconnection

of 2035 and 2816 (2 m)WB 1242: Optical Fibre Cable (specify cable

length) WL 1061: Coaxial Cable (specify cable

length to max. 15 m)WL 1062: BNT to BNT Cable to connect the

sampling output of 2816 No.1 to the sampling input of No.2 (specify cable length to max. 50 m)

An individual 3550 system specification includes the specifications of all relevant components Types 2035, 3156, 3157, 7649, 7674, 7639, 7670, 7671, 7672, 3019, 3020, 3023, 3106, 3018, ZZ 0220, 7640, 2816, 7520, 7521, 3015, 3016, 3017, 3107, 5955

Application Software

Application software written using auto-sequences and user-definable functions. Running on the 3550.WT 8080: Sound Intensity ProgramWT 8081: Multichannel Order Analysis

ProgramWT 8090: Verification and Calibration of

MicrophonesWT 8091: Verification and Calibration of

AccelerometersWT 8092: Accelerometer Calibration

Application software for external computersSTAR: Structural Testing, Analysis, and Reporting system from SMS for dual- and multichannel configurations of the 3550, running on IBM PC-AT, PS/2 (under Microsoft Windows version 3.1 or higher) including:WT 9200: Structural Analysis System

SoftwareWT 9201: Modal System SoftwareWT 9202: Structural Dynamics Modification

SoftwareWT 9203: Forced Response Simulation

SoftwareWT 9204: Advanced Curve-fitting Option,

MIMOCADA-PC Modal Analysis Software from LMS International running on IBM PC-AT, PS/2 (or compatible) under Microsoft Windows Version 3.1WT 9241: CADA-PC 5200 Modal Analysis,

SIMO, plus CADA-PC 1500 Instrument Driver for Type 3550

WT 9242: CADA-PC 5210 Advanced Modal Analysis, MIMO

WT 9243: CADA-PC 5600 Structural Modification

WT 9244: CADA-PC 5700 Forced Response Prediction

WT 9240: Bundled option which includes WT 9241, WT 9243 and WT 9244. For mono-reference modal testing and simulations.

WT 9245: Bundled option which includes WT 9241, WT 9242, WT 9243, WT 9244. For polyreference modal testing and simulations

STSF: Spatial Transformation of Sound Fields programs, running on HP series 300 and 400 workstations under UNIX and X-Windows:WT 9259: for dual-channel configurations of

3550WT 9260: for multichannel configurations of

3550

WT 9300: Multi-plane Balancing Program offers all the processing features necessary for carrying out balancing calculations based on vibration measurements using the 3550. Operates on IBM PC-AT, PS/2 (or compatible)

WT 9362: Non-stationary Signals Analysis Software includes Wavelet, Wigner-Ville Transform and Short-time Fourier Transform. (Runs on and IBM PC-AT, PS/2 (or compatible) under MS-DOS.)

WT 9378: Sound Intensity Program performs sound intensity mapping and Sound power calculation. Runs on IBM PC-AT, PS/2 (or compatible) under DOS

WT 9380: Operational Deflection Shapes (ODS) software from VEC, Vibration Engineering Consultants, Inc. Offers ODS using measurement data from the 3550. ODS is the shape in which a structure vibrates at a particular frequency, under stationary conditions. Runs on IBM PC-AT, PS/2 (or compatible) for dual-channel configurations of the 3550

WT 9391: Multichannel 3D-plot Program transfers autospectra and cross-spectra from the 3550 with or without tracking. Spectra may be input at fixed time intervals, as a function of frequency, or RPM, gated with respect to a trigger or manually accepted. Display facilities include 3D-plots, spectral cuts and Campbell diagrams. Runs on IBM PC-AT, PS/2 (or compatible) under Microsoft Windows Version 3.1

WT 9554: Normal Mode Test Software for controlling a multiple exciter system based on the 3550. Runs on IBM PC-AT, PS/2 (or compatible) under Microsoft Windows Version 3.1

Signal Analyzer Unit — Type 2035
Signal Analyzer Unit Type 2035 is amainframe unit fitted with a 12″raster scan screen, a disk drive anda keyboard. It houses the signal anddisplay processors, the memories, andall the hardware that is needed foranalysis and system control. Type2035 is the platform on which all3550 system configurations are built.
In all configurations, 2035 must befitted with a zoom processor, andloaded with Dual-channel AnalysisSoftware Type 7649.

Dual-channel 3550 SystemFor single- and dual-channel applica-tions the 2035 is fitted with a zoomprocessor, two single-channel inputmodules, and a generator/samplingor sampling module. The system willnot support only one single-channelinput module installation.

Multichannel 3550 SystemTo perform multichannel analysis inup to eight channels, the 2035 can befitted with up to two 4-channel inputmodules. The program key for Type7674 4/8-channel Analysis Softwareis used to unlock the system’s mul-tichannel functionality.

For measurements in up to 16-channels the 2035 can be fitted witha multichannel interface (Type 7520)and loaded with Multichannel Anal-ysis Software 7640. Modules are in-stalled in one or two MultichannelData Acquisition Units Type 2816connected to the 2035.

All multichannel applications,whether using Type 7674 or Type7640 software options, require thatthe 2035 be fitted with a 100 kHz/Multichannel Zoom Processor Type

3157, and must include the programkey for Type 7649 Dual-channelAnalysis Software.

Disk DriveThe floppy disk drive in the 2035 en-ables analysis software to be loadedfrom disk. It also enables measure-ments, setups, user-defined functionsand autosequences to be permanentlystored on disk.

Formatted disks are compatiblewith PC/MS-DOS so that data can beeasily transferred to an external com-puter which also runs under MS-DOS, or a compatible platform.

External Keyboard NP0028NP 0028 is an optional keyboard thatcan be used for alphanumeric entryof user-definable functions, autose-quences, comment lines and text pag-es.

System OutputsOutputs for hard copy, and for PCcommunication, are provided by theRS–232 and IEEE/IEC connectors on2035. Connectors are also providedfor video output, for power supply toSimulator Unit ZZ 0220, and for theExternal Keyboard NP 0028.

If no input or sampling/generatormodules are installed in the 2035,slots A, B and C come covered withBlank Panel FA 1141.

9

Specifications 2035
Signal Analyzer Unit Type 2035 is a mainframeunit fitted with a 12 inch raster scan screen, adisk drive and a keyboard. It houses the signaland display processors, the memories and hard-ware needed for analysis and system control.In all configurations, the 2035 must be fitted witha zoom processor and loaded with Dual-channelAnalysis Software Type 7649.
DISPLAY:Type: Built-in 12 inch TV-raster scan monitor Picture Resolution: 290×512 dots, wheregraph area is 512 or 401 dots wide Scale Lines: Horizontal scale lines and x-axiswith check marks MASS STORAGE:Built-in floppy disk drive for storage of measureddata, setups and programsData Media: Removable 31/2 inch dual-sided,high-density micro-floppy disk Data Format: Compatible with PC/MS-DOSfrom version 3.2, except subdirectories Formatted Capacity: 1.44Mbytes File List: Contains disk identification, with user-definable disk name and file list sorting key. Eachfile is identified by user-definable file name, datatype, size, and time of store IEEE/IEC INTERFACE:Conforms to IEEE–488.1 and IEC625–1 stand-ards. Functions Implemented:Source Handshake SH1Acceptor Handshake AH1Talker T5Listener L3Service Request SR1Remote/Local RL1

10

Parallel Poll PP0Device Clear DC1Device Trigger DT1Controller C1, C2, C28RS–232 INTERFACE: (Only output)Conforms to EIA standard RS–232–C (equiva-lent to CCITT V.24). Coupled as a “Data TerminalEquipment” (DTE)Connector 25-pin D-range

(male)Mode of operation Full duplexNumber of data bits 8/7Number of stop bits 1/2Baud rates 300, 600, 1200,

2400, 4800, 9600,19200

Parity None/Even/OddSynchronization Hardwired/

(X-on/X-off) INPUT/OUTPUT:Serial Interface 1 and 2: Up to two 2816 canbe connected directly to 2035 using 1 cableAO0370 per 2816Simulator Unit: 7-pin DIN socket for poweringthe simulator unit ZZ 0220Keyboard: 5-pin socket for connecting a stand-ard “QWERTY” keyboard NP 0028Video Output: For video hard copy units, re-corders and monitors. Composite video signal.1V peak-to-peak into 75 Ω

Vertical Scan Frequency: 50 HzOutput Impedance: 75 Ω

POWER REQUIREMENTS:Voltage: 90 – 140 V AC or 180 – 264 V ACFrequency: 47.5 – 420 HzPower Consumption: 300 – 350 VA when fittedwith:

2 25kHz Input Modules Type 3019

Generator & Sampling Module Type 3106

25kHz Zoom Processor Type 3156GENERAL:Cabinet: Supplied as model A (lightweight metalcabinet), or C (as model A but with flanges forstandard 19 inch racks)Dimensions (A-cabinet without feet):

Height: 310.4mm (12.2in)Width: 430mm (16.9in)Depth: 500mm (19.7in)Weight: 34kg (75lb.) without modules36kg (79lb.) when fitted with:2 25kHz Input Modules Type 3019Generator & Sampling Module Type 310625kHz Zoom Processor Type 3156

ACCESSORIES INCLUDED:Mains cable

2 × AO 0087: BNC to BNC Coaxial CableBI0510: Instructions for use of Digital

Hardware Test ProgramBI0543: Instructions for use of Analog

Hardware Test ProgramBZ 5041: Digital Hardware Test ProgramBZ 5076: Analog Hardware Test ProgramJJ 0152: BNC T-connectorQA 0049: Allen key, 2.5mmQA 0153: Allen key, 2.0mm2 × VF 0091: Spare fuses T 2AH/250V3 × VF 0092: Spare fuses T 4AH/250VACCESSORIES AVAILABLE:KS 0027: Rack Mounting Flanges

11

25kHz Zoom Processor Type 3156 isa printed circuit board, designed forinternal installation in Type 2035.

Type 3156 is the zoom processor forthe 25 kHz, dual-channel configura-tion of 3550 system.

25kHz Zoom Processor – Type 3156

100 kHz/Multichannel Zoom Proces-sor Type 3157 is a printed circuitboard, designed for internal installa-tion in Type 2035.

Type 3157 is required for 100 kHz,dual-channel 3550 configurations,and for all multichannel configura-tions.

These specifications are only valid for con-figurations in which two 25 kHz single-chan-nel input modules are installed in a 2035

REAL-TIME PROCESSING CAPABILITY:Data from two 25kHz Input Modules Type 3019Maximum total input data rate: 131.072 kHzOUTPUT FREQUENCY RANGE:Baseband or Zoom15 Frequency Spans: from 1.56 Hz to 25.6 kHz,with an output sample rate of 2.56 × frequencyspan for absolute frequency measurements15 Frequency Spans: from 781mHz to12.8 kHz, with an output sample rate of 10.24 ×frequency span for order measurementsZOOM CENTRE FREQUENCY:Resolution: 1mHz in all frequency spansLOW-PASS FILTERS:Ripple in Pass Band: <0.04 dBAttenuation in Stop Band: >95 dB

100kHz/Multichannel Zoom Processor – Type 3157

These specifications are only valid in con-junction with 7649 and either 7640 or 7674software

MAXIMUM NUMBER OF ACTIVE CHANNELS:Depends on type of input module and the upperfrequency limit (baseband or zoom) for the se-lected frequency span:

REAL-TIME PROCESSING CAPABILITY:Maximum total input data rate: 524.288kHzOUTPUT FREQUENCY RANGE:Baseband or Zoom17 Frequency Spans: from 1.56 Hz to102.4kHz, with an output sample rate of 2.56 ×frequency span for absolute frequency measure-ments17 Frequency Spans: from 781 mHz to51.2kHz, with an output sample rate of 10.24 ×frequency span for order measurementsZOOM CENTRE FREQUENCY:Resolution: 1mHz in all frequency spansLOW-PASS FILTERS:Ripple in Pass Band: <0.04 dBAttenuation in Stop Band: >95 dB

InputModule

UpperFrequency

Limit

MaximumNumber ofChannels

100kHz 51.2kHz to 102.4kHzup to 51.2kHz

24

25kHz 12.8kHz to 25.6kHzup to 12.8kHz

816

Dual-channel Analysis Software Type7649 is the essential software for allconfigurations of 3550.

For dual-channel configurations,with modules installed in 2035, thesoftware supports single and dual-channel measurement modes in: Spectrum averaging Spectrum averaging, zero pad

1/n-octave spectrum averaging Signal enhancement For all system configurations, 7649

implements: User-definable functions Autosequence programs Automatic calibration procedure Disk drive interface Hard copy facilities

Variable transform size of the FFT Spectral weighting and comb lift-

ering for cepstrum analysis 100 kHz measurement capability 1/n-octave synthesis On-line help Setup examples provided on the

Data Setups disk

Dual-channel Analysis Software – Type 7649

Specifications 7649
ANALYSIS CHARACTERISTICS:Measurement Modes:• Spectrum averaging• Spectrum averaging, zero pad• 1/n-octave spectrum averaging• Signal enhancementResolution: 50, 100, 200, 400 or 800 spectrallines corresponding to time records of 128, 256,512, 1024, or 2048 samples. In zero pad mode,the time records are 64 to 1024 samples paddedwith zerosAnalysis Parameters: For a time record of 2048samples giving 800 spectral lines:
WEIGHTING: Weighting functions are available on:• Time domain functions• Frequency domain functions• CepstraWeighting Functions:• Rectangular • Hanning• Transient• Exponential• Flat-top• Kaiser-Bessel• User-defined (only for time domain functions)• Comb lifter (only for cepstra)Transient and exponential weighting include se-lectable position, length and tapers.Time Domain Weighting: Independently se-lectable on each channelFrequency Domain Weighting: For post-processing of autocorrelation, cross-correlation,impulse response, and cepstrumCepstrum Liftering: Two independent sets oflifters. The transient weighting function is usedfor short-pass and long-pass liftering. The comblifter has selectable rahmonic spacing and width.The comb intervals can be set to zero or linearinterpolation can be selected.Integration and Differentiation: Single anddouble integration or differentiation of the timesignal with respect to time. For example for con-version between displacement, velocity and ac-celeration. (The calculations are performed inthe frequency domain.)TRIGGER:Trigger Input: Free run, internal on channel Aor B before or after digital low-pass filtering, ex-ternal, synchronous with the generator signal,manual, on a specified tacho signal or IEEETrigger Modes: All records or only first record

Freq.Span

(fs ) Hz

Freq.Resolution

(∆ f) Hz

RecordLength(T) s

TimeResolution

(∆ t) s

➀

102.4k51.2k

12864

7.81m15.6m

3.81µ7.63µ

25.6k12.8k6.4k3.2k1.6k

800400200100502512.56.253.131.56

3216

84210.5

250m125m62.5m31.3m15.6m

7.81m3.91m1.95m

31.3m62.5m

125m250m500m

1248

163264

128256512

15.3µ30.5µ61.0µ

122µ244µ488µ977µ

1.95m3.91m7.81m

15.6m31.3m62.5m

125m250m

➀ 100kHz modules onlyIn zoom mode ∆t is twice as long

12

Trigger Slope: Selectable for internal and exter-nal triggerTrigger Level: Adjustable in 199 steps acrossthe input voltage range for internal triggerTrigger Hysteresis: Selectable in fractions ofmaximum input. Resolution: 0.01Trigger Delay: Delay between trigger and startof record specified in seconds from −1 recordlength to 2500s. Resolution: 1 sampleDelay: Delay between start of channel A andchannel B set in seconds from 0 to 480s. Res-olution: 1 sampleAVERAGING:Exponential: The number of averages indicatedin the measurement setup determines the effec-tive averaging timeLinear: Equal weighting. Stops when the select-ed number of averages is reached. A true aver-age is always displayed, the number of averagesis indicated on the displayPeak: The maximum level occurring on eachchannel is heldNumber of Averages: 1 through 32767. AnyintegerOverlap: From 0.0% to 99.9% in steps of 0.1%,or maximumManual Accept: Data is only included in theaverage under manual controlOverload Reject: Select between reject or ac-cept in the average, of time records containingoverloaded data.1/n-OCTAVE ANALYSIS:Method: 14 digital cascade-coupled low-pass fil-ters are implemented with cutoff frequencies ina binary sequence. Data from each filter is dec-imated by a factor of 2, and 256 point FFT isperformed on data after the analog anti-aliasingfilter and after each of the digital filters Frequency Range:

25 kHz Input Module: 0.8 Hz to 20 kHz100 kHz Input Module: 1.6 Hz to 80 kHz(lower and upper 1/3 octave centre frequency)Number of Octaves: 1 to 15

Averaging:Lin: Averaging time from 5ms to 24hoursExp: Time constant from 50ms to 5minutesAveraging Trigger: Free run, external withspecified slope and delay, or manual withspecified delay

Bandwidth:1/n-octave: n is any integer from 1 to 24Narrow: Quasi narrow-band spectrum with 44constant-bandwidth lines per octave

Delay Between Ch. A and Ch. B:25kHz Input Module: 0 to 62.5ms100kHz Input Module: 0 to 15.6ms

Display: Bar graph annotated with preferred fre-quencies. A, B, C, or D-weighted level and /orlin.-weighted level displayed in separate bar

X-axis: Any number of octaves from 1 to 31Y-axis: Absolute or relative (dB)

FUNCTIONS CALCULATED AND DISPLAYED:In dual-channel mode both ch. A and ch. B func-tions are available.All functions that are available in spectrum av-eraging (except sound intensity) are also avail-able in spectrum averaging, zero pad.Spectra: Amplitude spectrum, RMS spectrum,power spectrum, power spectral density or en-ergy spectral densityHilbert Transform: Can be applied on: Time(giving complex time), enhanced time, autocor-relation, cross correlation, impulse response (h1,h2, h3), and cepstrumCoordinates: Real, imaginary, magnitude,phase, Nyquist (imaginary vs. real) Nichols (Log.magnitude vs. phase)Acoustic Weighting: Fourier spectrum, en-hanced spectrum, autospectrum, coherent out-put power, noncoherent power, sound intensityand liftered spectrum can be A, B, C or D-weight-ed

Omega Weighting: Real display functions in thefrequency domain can be divided or multipliedonce or twice by ω. Complex display functionsin the frequency domain can be divided or mul-tiplied once or twice by jωDelay Compensation: Compensates for delayof the complex frequency domain functions, Fou-rier spectrum, enhanced spectrum, complexspectrum, cross-spectrum, frequency responseand 1/frequency response. The compensation isreflected in the real, imaginary, phase andNyquist display. Delay compensation is adjusta-ble from –8s to 8s in steps of 5 µsBow-Tie Correction: Correlation functions canbe displayed with or without bow-tie correctionin zero pad modes (spectrum averaging, zeropad and signal enhancement modes)Octave Synthesis: Performed on the magnitudeof all frequency domain functions, and on thereal and imaginary parts and phase of the cross-spectrum

Bandwidth: 1/n-octave: n is any integer from1 to 24X-axis: X-start can be specified in steps of 1octave. X-width can be any number of octavesfrom 1 to 31

DISPLAY:Graph Formats:Full Format: A single graphDual Format: Two graphs in upper/lower format.Data source and display setups independentlyselectable for the upper and lower graphsHalf Format: Single graph with measurementsetup, system setup or menuSuperimposed: Dual trace front/back graph.Data source and display setups independentlyselectable for front and back graphsTEXT FORMATS:System Setups (half or full screen): • Transducer setup• Measurement setup extension• Display setup extension• Cursor setup extension• User-definable functions• Text pages• Hard copy setup• Miscellaneous

Display Function

Measurement ModeSpectrum Averaging Signal

Enhance-mentNormal 1/n-octave

1-ch 2-ch 1-ch 2-ch 1-ch 2-ch

Time

Complex Time

Orbit

Enhanced Time

Enhanced Orbit

Monitor Signal

Fourier Spectrum

Enhanced Spectrum

Complex Spectrum

Autospectrum

Cross-spectrum

Freq. Response H1, H2, H3

H1

1/Freq. Response H1, H2, H3

H1

Coherence

Signal-to-noise Ratio

Coherent Power

Noncoherent Power

Autocorrelation

Crosscorrelation

Impulse Responseh1, h2, h3

h1

Sound Intensity

Cepstrum

Liftered Spectrum

• Configuration setup• 6 multichannel setupsMenu Format: Menu of options for a selectedparameterFile List: Directory of files stored on diskComment Line: A text-string of one line of upto 58 characters can be shown on the display.One text-string for each measurement setup anddisplay setup is saved in non-volatile memoryY-axis: Selection between linear and logarithmicy axis. Using logarithmic y axis the units can beabsolute or relative in dB. Selectable dB refer-enceLog Range: 2.5, 5, 10, 20, 40, 80, 160, 320dBY-Full Scale: Autoscale giving optimum datapresentation, or selection of Y-full scale equal tomaximum peak input, or continuously variableusing manual settingUnits: V, V2, V2/Hz, V2s/Hz, or units defined inthe transducer setupPhase: Wrapped phase: −200° to +200°Unwrapped phase: Y-range from ± 0.1° to± 18000°. Offset from 0 to ±10800°X-axis:Spectra:Lin.:

X-start: In steps of 1 lineX-width: 26, 51, 101, 201,401or 801lines

Log: X-start: Freely selectable in HzX-width: 1 to 17 octaves in steps of 1 octave.0.01 to 5 decades in steps of:0.01 decade from 0.01 to 0.1 decade0.1 decade from 0.1 to 1 decade1 decade from 1 to 5 decades

Time: Linear with annotation in seconds. X-startcan be specified in steps of one sample. X-widthcan be specified in seconds from 16 to 2048samplesText Pages: 10 pages, each with 31 lines of 73characters, for documentation are stored in non-volatile memoryCURSORS:Cursor Types: Main and plot cursorSpecial Cursor Types: Harmonic cursor, side-band cursor, delta cursor, mask cursor and ref-erence cursorCursor Setting: • Main cursor: X-position. • Plot cursor: Frequency or time• Harmonic cursor: ∆X• Sideband cursor: Xc and ∆X• Delta cursor and mask cursor: Xc and ∆X or

X1 and X2 • Reference cursor: Xr and ∆XMain Cursor Y-Readings: Types and unit as Y-axisCursor X-Readings: Time or frequency. In dual-channel measurements, time-reading includesselectable delay Ch. A to Ch. BCursor ∆ Readings: ∆ t or ∆ f values betweenharmonics, sideband, ∆ or reference cursorAuxiliary Information:• Main cursor y value minus reference y value• Element number• Flexible scaling• Equivalent 1/3 octave band number• Unwrapped phase in multiples of 360°• Total power or total energy• Energy/power in the delta/mask cursor band• Ratio of delta energy/power to total• Measurement time for the displayed graph• Maximum Y value• X value for maximum Y value• Overlap verification• Effective averaging time• Confidence level• Number of selected harmonics or sidebands• Harmonic or sideband frequency• 1/(harmonic cursor spacing) for cepstrum• Fundamental frequency• Fundamental RPM value• Actual frequency of selected order

OPERATION:Measurement Setup: 4 complete user-definedmeasurement setups can be saved and recalledfrom a non-volatile memory. Measurement setupparameters can be changed before or during ameasurementDisplay Setup: 10 complete user-defined dis-play setups can be saved and recalled from anon-volatile memory. Display setup parameterscan be changed before, during, or after a meas-urementParameter Entry: Increment/decrement con-trols, continuously variable speed field entry con-trol, or numeric keypadMenus: Menu options are provided for the ma-jority of fieldsMeasurement Start: Predefined start of allmeasurement processesRecord Control: Single or continuous. Free-runor triggeredAveraging Control: Proceed, manual or auto-matic acceptHelp: To help with the optimal selection of setupparameters, on-screen help is provided on theHelp disk. Help is available in English, Frenchand GermanData Setup Disk: A disk containing files withsetups, user-definable functions and autose-quencesAUTOSEQUENCES:Autosequences are user-defined sequences offront panel key operations that are specified in“Learn” mode, or inserted in “Edit” mode alongwith a set of autosequence instructions. The au-tosequence instruction set can be used like amacro programming language to control key-board operations automatically, using hardkeycodes, branching and conditionalsName: An autosequence name can be up to 20characters longMemory: Up to 60 autosequences can be storedin the internal memory in 2035. The total allo-cated memory is 16KwordsInstructions: Key operations plus a wide rangeof instructions including:

Select, Await, Delay, Goto, Call, Repeat, If-Then-Else, Do-while, While-do, Comment line,Stop message, Message, Show text page,Autostart, Label, Alpha key, Shift key, Return,Copy, Test value, Test string, Numeric echofield, Alpha echo field, Calculation, For-to-step, Set numeric, Set alpha, Interrupt, Key-board

Conditions: Autosequences can be used toevaluate and take action on a large number ofdifferent conditions. There are four main typesof conditions:• UDF conditions• Measurement dependent conditions• LED dependent conditions• Numeric and alpha-numeric testsEdit: Autosequences can be edited on the EditAutosequence page. One or more instructionscan be inserted or removed by using the “Insert”keyThe following commands are available in theeditor: Edit, Create, Delete, Recover, Copy,Exchange, Rename, SetDisk Store and Recall: A single autosequence,or a complete set of all autosequences can bestored on, and recalled from, diskUSER-DEFINABLE FUNCTIONS:Other display functions and auxiliary informationcan be defined as User-definable Functions(UDF). The high level language used to definea UDF is automatically compiled into SPL (Sig-nal Processing Language) instructions. Theseinstructions are interpreted by the signal proc-essor and are executed and displayed in real-time during a measurement.60 expressions can be stored in non-volatilememory. Any number of these (0 to 60) can beselected as a UDF. UDFs can be stored on diskfor later use

UDF Name: Expression and UDF names canbe up to 13 characters longOperands:UDFs work with Booleans, real or complex sca-lars and real or complex vectorsData Vectors: Measured data, or data storedon files. Data can be spectra or time-recordsSynthesized Vectors: A large number of differ-ent vectors can be specified, including: Steps,Pulses, Ramps and ProfilesConstants: Real numbers from ±1E−99 to±1E99, and the pre-defined constants: “π”, “e”and the imaginary unit “j”Setup Data: A number of different values fromthe cursor, measurement and transducer setupsare accessible to the UDFsExpressions: Can be used as operands by oth-er expressionsOperators:Predefined Operators: A large variety are avail-able, including:Plus, minus, multiply, divide, raise to the powerBoolean operatorsSingle and double-sided FFTsTrigonometric and logarithmic functionsAbsolute, conjugate, square-root, merge, win-dow, selectUser-defined Macros: If a required operator isnot available it can be written as a macro-in-structionHARD COPY:Graphics Plotter: Any display on the 2035 in-cluding graphics and all alphanumerical can beplotted on the following plotters and laser print-ers:• Brüel & Kjær Graphics Plotter Type 2319• HP Type 7470A• HP Type 7475A• HP Type 7510A• HP Type 7550A• HP ColorPro• Plotters equivalent to these• Laser Printers with HPGL capabilityGraphics Printer: Any display on the 2035, in-cluding graphics and all annotation can be print-ed on the following graphics printers and laserprinters:• Brüel & Kjær Graphics Recorder Type 2313• HP Type 2225A• HP Type 2671G• HP Type 2932A• HP Type 9876A• HP ThinkJet• HP DeskJet• HP PaintJet• HP LaserJet• IBM Proprinter• EPSON Type FX-800 and FX-1000• Printers equivalent to theseText Printer: Output to Brüel & Kjær GraphicsRecorder Type 2313 and other text printersVideo Hard Copy Unit: Any display on 2035can be copied by using the video outputExport to Word-processing Programs: Screenpicture export using Tag Image File Format(TIFF) to WordPerfect and FramemakerIEEE/IEC INTERFACE:Data: Any function shown on the 2035 display,any basic measured data (input or file), all set-ups (measurement, display, cursor, pen plot andsystem), autosequence, status parameters,User-definable Functions, etc. can be transmit-ted to and from 2035Remote Control: All functions and instrumentsettings (excluding floating/signal ground settingand microphone polarization voltage) can be re-motely controlledCommand Set: Simple and easy to rememberstandard engineering English. Resistant to op-erator error. Syntax errors displayed on screenCode: ASCII (ISO 7-bit) code or binaryInterface Terminator: Can be defined from thefront panel or from a controllerDevice Address: Displayable on screen in sys-tem setup

13

4/8-channel Analysis Software Type7674 is for use with multichannelconfigurations of up to eight channelsusing 4-channel input modules in-stalled in Signal Analyzer Unit Type2035.

Type 7674 software offers the samefunctionality as Type 7640 software,

with a single generator, and a fre-quency range of 25.6 kHz.

As with Type 7640 software, theinput configuration is specified in theinput/output definition menu

For a full description of 7674 func-tionality see the specifications forType 7640 on page 22.

4/8-channel Analysis Software – Type 7674

Extended Analysis SoftwareType 7639 extends the applicationrange of 3550 by adding: Digital tracking (order analysis) Multifunction Time capture Time history Amplitude probability Amplitude and phase

demodulation 3D map (waterfall) display

In addition to the features listedabove, Type 7639 software offers anumber of special cursor functions foruse in extracting data subsets frommapped functions. The selected datacan then be shown in the other dis-play trace as an averaged function,

or an averaged slice across themapped data set.

Tracking Analysis Software Type7670 includes a subset of the addedfeatures provided by Type 7639 thatincludes: Digital tracking Time history

Signal Analysis Software Type7671 includes a subset of the addedfeatures provided by Type 7639 thatincludes: Time capture Multifunction 3D map displays (and associated

special cursors for selecting deltafunctions and delta slices).

Time history

Vibration Diagnostic SoftwareType 7672 includes a subset of theadded features provided by Type7639 that includes: Amplitude and phase demodula-

tion Amplitude probability Time history

All features are fully supported bythe on-line help facility, and anumber of setup examples are pro-vided with the included Data Setupsdisk.

To run the extended analysis soft-ware, the 7649 (dual-channel analy-sis) software key must be installed in2035 as well.

Type 7674 4/8-channel software provides thefollowing: • Support for 3550 configurations which include

one or two Type 3023 4-channel Input Mod-ules, in the Type 2035 Signal Analyzer Unit

• All the analysis features of Type 7640 Mul-tichannel Analysis Software, but limited to 8channels and a frequency range of 25.6 kHz,and using 4-channel input modules installedin the 2035

Extended Analysis Software – Types 7639, 7670, 7671, 7672

Specifications 7639, 7670, 7671, 7672
To run the software Type 7639, 7670, 7671, or7672, the program key for Dual-channel AnalysisSoftware Type 7649 must also be installed in the2035.7639 EXTENDED ANALYSIS SOFTWARE:The Extended Analysis Software Type 7639adds the following features:• Multifunction• Time history• Time capture• 3D map (waterfall) display• Amplitude probability• Tracking• Amplitude demodulation (envelope analysis)• Phase demodulation7670, 7671, 7672 SOFTWARE TYPESThe software Types 7670, 7671, and 7672 in-clude various parts of the features of Type 7639software. (Time history is included in all foursoftware types.)7670 Tracking Analysis Software includes:• Time history• Tracking7671 Signal Analysis Software includes:• Time history• Multifunction• Time capture• 3D map (waterfall) display7672 Vibration Dia gnostic Software includes:• Time history• Amplitude probability
• Amplitude demodulation (envelope)• Phase demodulationMEASUREMENT MODES:Multifunction (with 7639 or 7671)Time capture (with 7639 or 7671)Time history (with 7639, 7670, 7671, or 7672)Amplitude probability (with 7639 or 7672)MULTIFUNCTION:Memory Size: 256Kbyte for multifunction buffer.

Multifunctions can be stored on disk for laterrecall and display

Multifunctions: User-defined or:Standard Multifunctions:• Time• Complex time• Fourier spectrum ‡• Complex spectrum #• Autospectrum ‡• Cross-spectrum #• Frequency response H1, H2, or H3 #• 1/Frequency response H1, H2, or H3 #• Coherence ‡• Sig/noise ratio ‡• Coherent power ‡• Noncoherent power ‡• Autocorrelation• Cross correlation• Impulse response h1, h2 or h3• Sound intensity ‡• Cepstrum• Lifted spectrum ‡

(single-channel functions can be Ch. A or Ch. B)Maximum Number of Functions:Depends on the function type selected, numberof spectral lines, and whether the number ofspectral lines in the multibuffer is reduced ormaximum

Num

ber

of S

pect

ral L

ines

Number of Functions

‡ #

Red

uced

Max

.

Red

uced

Max

.

50 1170 948 612 492

100 618 492 316 250

200 318 250 160 126

400 160 126 80 62

800 80 62 40 30

For ‡ and # see Standard Multifunction list above

14

Accuracy: Multifunctions are stored with full ac-curacy (complex functions are stored in rectan-gular coordinates)Number of Spectral Lines: 50, 100, 200, 400,or 800 lines determine the number of time sam-ples per record to 128, 256, 512, 1024, or 2048.Number of Spectral Lines in Multibuffer:Reduced: The selected number of spectral linesplus one: 51, 101, 201, 401, or 801 linesMaximum: 1.28 times the selected number ofspectral lines: 64, 128, 256, 512, or 1024 linesMultifunction Capture Control:Start Condition: Fundamental frequency inRPM or Hz, manual, external, absolute timeUpdate Condition: Fundamental frequency in-terval in RPM or Hz, manual, external, time in-terval, average completionStop Condition: Fundamental frequency inRPM or Hz, manual, external, absolute time,specified number of functionsMaximum Update Rate: 50ms update rate for800 line Multi AutospectrumTrigger Delay: Multifunction capture mode withautomatic trigger delay stepping (gated meas-urement)Trigger Delay Step:

∆t to 10×T. Resolution: ∆t 0.01 to 1 revolution. Resolution: 0.01 rev. intracking mode

Display: Data from multibuffer can be displayedin map (waterfall), function or sliceFunction: One function or an average of anumber of functions (delta function).

Averaging: Peak or linearSlice: A cross-section through the map at aconstant x value or an average of a number ofsuch slices (delta slice).

Averaging: Peak or summation.TIME HISTORY:Records time samples and outputs them as fastas possible. The samples can be output to disk,or via the IEEE-488 or the RS-232 interface, toan external computer. The time samples can bere-entered into the analyzer later, for analysis,using any measurement mode other than timehistory modeNumber of Channels: 1 to 16(Multichannel analysis software Type 7640 or7674 is needed for more measurements of morethan 2 channels)Frequency Range: Baseband or Zoom

25 kHz Input Modules: 15 frequency spansfrom 1.56 Hz to 25.6 kHz100kHz Input Modules: 17 frequency spansfrom 1.56 Hz to 102.4 kHz

Length of Time History: The length is specifiedas the number of blocks.

Block length: Baseband: 2048 samples. Zoom: 1024 samplesStop Criterion: Manual or after a specifiednumber of blocks

Recording: Free run or triggered with selectabletrigger delay

Trigger: Only first section or all sections. Thelength of the sections can be specified in sec-onds, corresponding to an integer number ofblocks

Storage on Internal Disk: The time samplesare stored without gaps between blocks.

Maximum number of blocks: Single-channel: 350 blocks (700 Ksamples)Dual-channel: 175 blocks per channelMultichannel: Highest integer < 350/number ofchannelsMaximum total length: 256000 seconds/(number of channels × frequency range in[Hz])

Transfer to External Device:The maximum length of a time history withoutgaps, depends on the number of channels, the

frequency span and the input speed of the ex-ternal device.The transfer is via internal buffer memory guar-anteeing no gaps independent of the frequencyspan and the speed of the external device up to:

Single-channel: 648 blocks (1296 Ksamples)Dual-channel: 324 blocks per channel8 channels: 81 blocks per channel16 channels: 27 blocks per channel

Maximum frequency span guaranteeing no gapsfor an unlimited number of blocks using a typi-cally fast external device is:

Single-channel: 12.8 kHzDual-channel: 6.4 kHz

Maximum number of blocks without gaps usinga typically fast external device is:

Single-channel, 25.6 kHz: 6628 blocks corre-sponding to 3 min. 27 secondsDual-channel, 12.8 kHz: 3640 blocks per chan-nel corresponding to 3 min. 48 seconds perchannel.

TIME CAPTURE:Number of channels: 1 or 24/8-channel Analysis Software Type 7674 is re-quired if you are using 4-channel input modules(Type 3023). Multichannel Analysis SoftwareType 7640 is needed if using input modules inthe 2816Record Length: 65536 samples (single-channelmode), 32768 samples (dual-channel mode). Intracking mode the record length is 16384 sam-ples per channel.Time Function: Envelope of complete timerecord can be displayed, or any expanded partfrom 128 samples and up in factor of 2, stepsHigh Resolution Frequency Functions:25600 spectral lines (single-channel mode)12800 spectral lines (dual-channel mode)Envelope of complete frequency function, or anyexpanded part from 50 spectral lines and up infactor 2 stepsTime Edited Spectrum: Any part of the recordfrom 128 to 32768 samples can be transformedto give 50, 100, 200, 400, 800, 1600, 3200, 6400or 12800 spectral linesMap (Waterfall): The map display is based ondata from a virtual multibuffer. The functions thatare laid out in the virtual multibuffer are calcu-lated from sections of the long time record(s),with specified length of the time blocks and over-lap in%, or offset in seconds. Function, averagedfunction, slice and delta slice can be selectedand displayedFunctions: All display functions except en-hancement functions, amplitude probability, co-herence, signal-to-noise ratio, and coherent andnoncoherent powerSpecial Cursors:

Scan Cursor: Specifies a map, function, orslice in the long time recordExpand Cursor : Expands long time functionsand high resolution frequency functions

3D MAP (WATERFALL) DISPLAY:Data from multibuffer in measurement modemultifunction, and from the virtual multibuffer inmeasurement mode time capture, can be dis-played in a MAP displayFormat: Full-screen or dual format with Mapdisplay in the upper traceSkew: Right or noneFlow: “Down” (most recent function added atthe top of display) or “Up” (most recent functionadded at the bottom of display). “Up” is availableonly after data collectionNumber of Traces: Selectable 6, 11, 21, 41, 81Cursors:

Map Cursor: The y value at the z and x cursorposition is read outOrder Cursor: Mark the selected order

Special Cursors:Slice cursor

Function cursorHarmonic order cursor

Z-Axis Cursor Read-out: Absolute time, timefrom multifunction start, fundamental frequency(in Hz or RPM) or function numberAMPLITUDE PROBABILITY:Number of Channels: 1 to 164/8-channel Analysis Software is required if youare using 4-channel input modules (Type 3023).Multichannel Analysis Software Type 7640 isneeded if you are using 2816 units.Functions Calculated and Displ ayed:• Time• Complex time• Orbit• Monitor signal• Amplitude probability density• Amplitude probability distribution• Fourier spectrumAuxiliary Information: • RMS value• Mean value• Variance• Standard deviation• Coefficient of variation• Skewness• Kurtosis• Crest factor• Peak value multiplied by RMS value• Positive Peak value• Negative peak value• Peak value• nth moment• nth central moment• nth normalized momentTRACKING:Method: Signals are sampled at the internalsampling frequency. One channel is used tomeasure tacho frequency. Measured tacho fre-quency determines digital low-pass filtering, dec-imation, interpolation and resamplingFrequency Range: Baseband or zoom

Span: Determined by the tacho frequency.0.132 Hz to 12.8 kHz (25 kHz modules), or to51.2 kHz (100 kHz modules)Centre Order: 1 to 9999

Functions: All functions available in fixed fre-quency span mode are also available in trackingmode.Number of Orders: 1 to 9999Tacho Source: Any channel can be used tomeasure tacho frequencyTacho Trigger:

Slope: Positive or negativeLevel: 199 steps across input voltage rangeHysteresis: Selectable in fractions of max.input. Resolution: 0.01

Tacho Ratio: Numerator and denominator from1 to 999Tacho Divider: 1 to 9999Tacho Hold-off: 0 to 0.99×tacho time-periodTacho Lower Frequency Limit: 1mHz to 10HzAMPLITUDE AND PHASE DEMODULATION:Enables analysis of the envelope and instanta-neous phase of time signals. Envelope is themagnitude of the complex time signal calculatedfrom the output of zoom processor. Instantane-ous phase is the phase of the same complextime-functionFrequency Span: The frequency span of theresulting demodulated spectrum:

25 kHz Input Modules: 14 frequency spansfrom 1.56 Hz to 12.8 kHz100kHz Input Modules: 16 frequency spansfrom 1.56 Hz to 51.2 kHz

Centre Frequency:Resolution: 1mHz in all frequency spans

15

Input Modules – Type 3019 & Type 3020

25 kHz Input Module – Type 3019

100 kHz Input Module – Type 3020

25kHz Input Module – Type 3019Type 3019 is a high-quality analoginput module for installation in Sig-nal Analysis Unit Type 2035.

With 3019 modules, single- or dual-channel analysis can be made up to25.6 kHz. Each module has direct,

16

Specifications 3019, 3FREQUENCY RANGE:3019: 0 to 25.6kHz3020: 0 to 102.4 kHzDIRECT INPUT:BNT socketMaximum Peak Input Voltage: 35 ranges from1mV to 80V in a 1, 1.5, 2, 3, 4, 6, 8 sequenceSingle-ended or differentialInput Impedance: 1MΩ // <100pFCoupling:

3019: DC3020: DC or ACInput zeroing for automatic DC-offset compen-sation

High-pass Filters: 0.7 Hz or 22.4 HzMaximum Input Voltage: 250V RMSMax. Induced Common-mode Voltage:10V peak for max. peak input voltage from 1mVto 800mV42V RMS for max. peak inputs from 1V to 80VSupply for Photoelectric Probe MM 0012 andMM 0024: +8V DC on inner shield (short-circuitproof)PREAMP INPUT:Standard B&K 7-pin preamplifier inputMaximum Peak Input Voltage: 35 ranges from1mV to 80V in a 1, 1.5, 2, 3, 4, 6, 8 sequenceMicrophone Polarization: 0, 28 or 200V from2MΩ sourceHeater Voltage:+6V (at 200mA) from 45Ω source+12V (at 200mA) from 15Ω sourceHigh-pass Filters: 0.7Hz or 22.4HzACC. CHARGE INPUT:TNC connectorMaximum Peak Input Charge: 42 ranges0.1 pC to 80 nC in a 1, 1.5, 2, 3, 4, 6, 8 sequenceSingle-ended or floatingHigh-pass Filters: 0.09 Hz, 0.7 Hz or 22.4 HzMax. Induced Common-mode Voltage: 10Vpeak for maximum input setting 0.1pC to 8nC.1V peak for maximum input setting 10nC to80nCSAFETY:System complies with safety class II of IEC 348.Safe operation in accordance with IEC 348 isobtained if the voltage of the signal ground, rel-ative to earth, does not exceed 42V RMS (sine)To ensure safe operation in accordance with IEC348 at higher voltages, the user must limit allinput currents to 0.7mA peak

charge (accelerometer) and micro-phone inputs. All inputs have a dy-namic range greater than 80 dB, anddirect and accelerometer signals canbe grounded or floating. The directinput provides power for tacho probes(MM 0012 or MM 0024).

The input module supports CCLDconnections via Adaptor ZG 0328.

The module is fitted with an anti-aliasing filter, low-pass and high-passfilters can be applied to all inputs.

Overload indication is given on the2035 screen, and autoranging can beselected on all inputs.

Type 3019 has the same specifica-tions as Type 3015 (for installationin Multichannel Data AcquisitionUnit Type 2816), except that its front

panel is horizontal instead of vertical.3019 can be modified to 3015 usingFront Panel Kit UA 1140.

100kHz Input Module – Type 3020Type 3020 has similar specificationsto Type 3019, except that analysiscan be made up to 102.4 kHz, and a100 kHz/Multichannel zoom proces-sor (Type 3157) must be installed in2035. 3020 can be modified to 3016(2816 module) using Front Panel KitUA 1142.

Channel MatchingThe responses of all input moduleshave matched amplitude and phaseresponses to ensure accurate cross-channel operation.

020COMMON-MODE REJECTION:Direct Input:

0 to 1 kHz: 80dB for 1mV to 800mV input range 60dB for 1 to 80V input range 1 kHz to 25.6 kHz: 60dB for 1mV to 800mV input range 50dB for 1 to 80V input range 25.6kHz to 102.4 kHz: 50dB for 1mV to 800mV input range 40dB for 1 to 80V input range

Acc. Charge Input:0 to 102.4 kHz: 40 dB

CROSSTALK:(Voltage source: 50 Ω, Charge source: 1 nF)Between any two Connectors on a Module:−100dB up to 25.6kHz −80dB up to 102.4kHz Between any two Input Modules: −120dBATTENUATOR LINEARITY:±0.1dBHIGH-PASS FILTERS:0.09Hz, -3dB:

Slope 6dB/octave0.7Hz, 0.1dB ripple cutoff frequency:

Slope 18dB/octave −3dB frequency: 3019: 0.5Hz 3020: 0.3Hz

22.4Hz, 0.1dB ripple cutoff frequency: Slope 18dB/octave−3dB frequency: 3019: 16.1Hz 3020: 7.0Hz

LOW-PASS FILTERS:6.4kHz, 0.1dB ripple cutoff frequency

Slope 18dB/octave −3dB frequency: 3019: 8.9kHz 3020: 15.4kHz

ANTIALIASING FILTER:Cutoff Frequency:3019: 12.8kHz or 25.6kHz3020: 51.2kHz or 102.4kHzThe filter provides at least 80 dB attenuation ofthose input frequencies which can cause aliasingThe filter can be bypassedSAMPLING:Max. Rate: 65.6kHz (3019) or 262.5 kHz (3020)A/D Conversion: 14bit

OVERLOAD DETECTION:On both common-mode and differential signals;applied before filtersNOISE:At least 80 dB below max. peak input voltage/√(1/3 octave), or 1µV/√(1/3 octave), whicheveris greater up to 20 kHz 1/3 octave bandDYNAMIC RANGE:All distortion (intermodulation and harmonic) andspurious at least 80 dB below maximum input formaximum peak input >10pC or >10mVOVERALL FREQUENCY RESPONSE:±0.15 dB from lower frequency limit (0.7 or22.4Hz) or 0Hz to upper frequency limit (6.4 kHz,12.8 kHz, 25.6 kHz, 51.2 kHz or 102.4 kHz)AMPLITUDE LINEARITY:±0.1dB or ±0.015% of maximum input, which-ever is greater, measured using a sine waveFor measurements more than 40dB below max-imum input, the measuring sine wave is accom-panied by another sine wave of a lowerfrequency, having an amplitude not less than20dB below maximum inputAMPLITUDE MEASUREMENT STABILITY:Voltage: ±0.1 dBCharge: ±0.15 dB(from 0 to –40 dB re max. input level)CHANNEL TO CHANNEL MATCH:Maximum Gain Difference:0.1 dB from Lower Frequency Limit fL=(0.7 or22.4 Hz) or 0 Hz, to Upper Frequency Limit fU=(6.4, 12.8, 25.6, 51.2 or 102.4 kHz)Maximum Phase Difference:1.1°−0.1°×(f/ fL) from fL to 10× fL0.1° from 10×fL or 0 to 0.1×fUf /fU from 0.1× fU to fUACCESSORIES INCLUDED:LK 0013: Ferrite Cable Clamp (for BNC)LK 0014: Ferrite Cable Clamp (for Acc.)DD0424: TNC shielding plugUA1139: Front panel kit (3019)UA1141: Front panel kit (3020)ACCESSORIES AVAILABLELK 0013: Ferrite Cable Clamp (for BNC)LK 0014: Ferrite Cable Clamp (for Acc.)WH 2985: Phase match to closer tolerances

on input modules of Type 3015, 3016, 3019, and 3020

ZG 0328: CCLD adaptorWH 2270: Preamplifier Analog Output

4-channel Input Module – Type 3023

Type 3023 is a 4-channel input mod-ule for installation in the Signal An-alyzer Unit Type 2035.

The 4-channel Input Module Type3023 supports both Direct, and CCLD(Constant Current Line Drive, used

Specifications 3023FREQUENCY RANGE:0 to 25.6 kHzINPUT:BNT socketINPUT VOLTAGE:28 ranges from 4 mV to 30 V peak in a 4, 6,8,10, 15, 20, 30 sequence. Single ended or dif-ferentialINPUT IMPEDANCE:1 MΩ||<100 pFCOUPLING:AC for all input rangesDC for 30 mV to 30 V input rangeInput zeroing for automatic DC-offset compen-sationHIGH-PASS FILTER:0.09 Hz, -3 dB (0.6 Hz, -0.1 dB). Slope 6 dB/oc-taveMAXIMUM INPUT VOLTAGE:35 Vrms continuously200 V, single pulse:

10 µs rise time (10 to 90%)700 µs decay time (to 50%)

MAXIMUM INDUCED COMMON MODE VOLTAGE:10 VSUPPLY FOR PHOTOELECTRIC PROBE:+8 V DC on inner shieldSUPPLY FOR CCLD ACCELEROMETERS:4 mA from +28 V source

Generator & Samplin

for Brüel & Kjær’s DeltaTron rangeof accelerometers) inputs. These in-puts are ICP-compatible (ICP is aregistered trademark of PCB Piezo-tronics, Inc.). Each channel has a fre-quency range of 25 kHz. The 3023 hasfour BNT sockets on its front panel,and will also provide the power nec-essary to handle photoelectric probes.The operating range of the 3023 isslightly lower than for the singlechannel input modules (4 mV to 30 V

max input voltage), but its dynamicrange is the same (80 dB).

The maximum number of inputchannels is 8 for two 4-channel inputmodules installed in the Signal Ana-lyzer Unit Type 2035.

4-channel Input Module Type 3023requires the installation of 4/8-chan-nel Analysis Software Type 7674.

Type 3023 can be modified to Type3022 (for use with a Type 3551) usingFront Panel Kit UA 1241.

COMMON-MODE REJECTION:0 to 1 kHz (DC coupling) 50 Hz to 1 kHz (ACcoupling:70 dB for 4 mV to 3 V input range50 dB for 4 V to 30 V input range1 kHz to 25.6 kHz (DC or AC coupling):50 dB for 4 mV to 3 V input range40 dB for 4 V to 30 V input rangeCROSSTALK (Source: 50 Ω): Between any two channels on a module orbetween any two channels on different mod-ules: No reduction of the 80 dB dynamic range,or –124 dBATTENUATOR LINEARITY:±0.1 dBANTIALIASING FILTER:Cut-off frequency: 3.2 kHz, 6.4 kHz, 12.8 kHzor 25.6 kHz Provides at least 80 dB attenuation of those inputfrequencies which can cause aliasingSAMPLING:Maximum Rate: 132 kHzA/D conversion: 16 bitOVERLOAD DETECTION:On both common-mode and differential signals;applied before filtersNOISE:At least 80 dB below the maximum peak inputvoltage/√(1/3 octave), or 2 µV/√(1/3 octave),whichever is greater

DYNAMIC RANGE:All distortion (intermodulation and harmonic) andspurious at least 80 dB below maximum input formaximum peak input >10 mVOVERALL FREQUENCY RESPONSE:±0.1 dB from 0 Hz (DC coupling) or 0.6 Hz (ACcoupling) to upper frequency limit fU = 3.2 kHz,6.4 kHz, 12.8 kHz, or 25.6 kHzAMPLITUDE LINEARITY:±0.1 dB or ±0.015 % of maximum input, which-ever is greater, measured using a sine wave. Formeasurements more than 40 dB below maximuminput, the measuring sine wave is accompaniedby another sine wave of a lower frequency, hav-ing an amplitude of not less than 20 dB belowthe maximum inputAMPLITUDE MEASUREMENT STABILITY:±0.1 dB(from 0 to – 40 dB re max. input level)CHANNEL-TO-CHANNEL MATCH:Maximum Gain Difference: 0.2 dB from the low-er frequency limit, fL=0.6 Hz (AC coupling), or0 Hz (DC coupling) to upper frequency limitfU=3.2 kHz, 6.4 kHz, 12.8 kHz or 25.6 kHzMaximum Phase Difference: 2.2° – 0.2°× (f/fL) from fL to 10×fL0.2° from 10× fL or 0 to 0.1× fU5°× (f/fU)-0.3°, from 0.1× fU to fUACCESSORIES INCLUDED:UA 1242: Front Panel KitACCESSORIES AVAILABLE:UA 1241: Front Panel Kit

g Module – Type 3106

Generator & Sampling Module Type3106 is designed for use in 3550 sys-tems configured for dual-channelanalysis, or with one or two 4-channelinput modules in a 2035 multichan-nel configuration. The 3106 (installedin the Signal Analyzer Unit Type2035) provides all the signals re-

quired for system measurements.The module also provides the sam-pling input/output connection, the ex-ternal trigger input and the soundintensity probe connector for thedual-channel system.

Generator

The generator is designed around apowerful digital signal processor anda 16-bit D/A convertor, and has ex-

ceptional flexibility, stability and ac-curacy. Frequency & Output Range: Thefrequency range is 0 to 102.4 kHz,with a frequency accuracy and stabil-ity of ± 0.01%.

Output levels are adjustable from1 µV to 5 V, and can be referred toground or floating. A DC offset canbe added, but unwanted DC offset isautomatically removed.

17

A A A B B B C C C

Trigger Pulses

A, B & C pseudo-random sequences with randomly shuffled phase spectra

Waveforms

Sine and Dual Sine: Single anddual superimposed sine waves havehigh spectral purity. Both sine anddual sine waveforms can be swept,dual sine waves can be combined infixed/swept, swept/swept or fixed/fixed modes.Multisine: The Multisine waveformhas a low crest factor to extract max-imum RMS levels from a shaker. Theline spectrum of the signal can bematched to the frequency lines ofsubsequent analysis. In 1/n octaveanalysis mode 44 lines per octave canbe selected for multisine.Random: The signal is produced bya pseudo-random generator with avery long sequence length. The ran-dom signal can be band limited tomatch the selected frequency span,and band translated for zooming.Pseudo-random: The signal has aline spectrum that can be matched tothe frequency lines of subsequentanalysis. The waveform has Gaussian

18

Specifications 3106

amplitude distribution, and signalscan be band-limited and band-trans-lated for zoom.Periodic Random: The signal isproduced by repeating a pseudo-ran-dom block a selectable number oftimes. The phase spectrum is thenshuffled, and the new pseudo-randomblock is repeated, and so on. A triggerpulse is used to start the measure-ment at the start of the last block ofeach pattern. Fig.9 shows the se-quence when three blocks are repeat-ed.Pulse: Three pulse shapes are avail-able, including a rectangular impulsewhich can be as short as 4µs, withuser-defined width and repetitiontime.User-defined: For ultimate controlof testing, and to make system anal-yses with “real” excitation signals,user-defined waveforms can be pro-grammed into the generator.

Time functions, complex frequencyspectra or autospectra can be down-loaded into the module and stored ina buffer memory.

For an autospectrum, phase infor-mation is added (in the 3106 module)to reconstruct the time waveform,and the phase can be specified to givea pseudo-random, or periodic randomsignal. In the latter case the functionis identical to the periodic randomwaveform, but the shape of the fre-quency spectrum is user-defined.Pink Filter: An analog filter can beapplied to any wideband signal togive it a “pink noise” roll-off of 3dB/octave above 22.4Hz.Waveform Repetition: Waveformscan be repeated with a selectable pe-

riod, for a specified number of timesor continuously. Fixed sine and ran-dom signals can be gated to give aburst with selectable width.

Control

Trigger: The 3106 provides a triggerwhich can be used to trigger data col-lection. The timing of the trigger de-pends on the waveform beinggenerated; generally it is at the startof a pattern or burst.Soft start & stop: This functionramps the signal level up when thegenerator starts and down when thegenerator stops. The ramp is loga-rithmic, and both the start/stop am-plitude level, and the ramp time canbe selected.Delay to measurement: To allow atest system to reach a steady-statecondition, the start of recording canbe delayed for a selected time afterthe generator start.

Sampling and Probe Connections

The sampling input/output for thesystem is provided by the 3106. Thesame connector is used for eitherfunction, but is only an input when“external sampling” is selected.

The input connection for a soundintensity probe is also located on thefront panel of 3106.

Fig.9 Sequence of pseudo-random blocksin Periodic Random waveform

912052/1e

These features are valid only in conjunctionwith 7649 softwareFREQUENCY RANGE: Two generator modes: 25.6 kHz and 102.4 kHzOUTPUT WAVEFORMS: Sine, Dual-sine, Swept Sine, Dual-swept Sine,Random, Multisine, Pseudo-Random, PeriodicRandom, Pulse and User-definable waveformBuffer Memory: 64 Kword for waveform speci-fied in time or frequency domainD/A Converter : 16 bitAnalog Smoothing Filters: At least 84dB at-tenuation of mirror-frequenciesCutoff Frequency: 25.6kHz or 102.4kHzPink Filter: −3dB/octave attenuation from22.4 Hz to 102.4 KHzGain: 0dB at 1kHzOutput Level (load >10kΩ, <1nF): −5V to +5V peak (AC+DC)

AC Level Range:Sine: 1µV to 3.5VRMSRandom: 1µV to 1.0 VRMSMultisine: 1µV to 2.5VRMS Pseudo-random: 1µV to 1.8VRMS Periodic Random: 1µV to 1.4 VRMS Pulse: 1µV to 5V peak

Selectable DC Offset: −5V to +5VOutput Differential Impedance: 50ΩMaximum Output Current: ±10mA peak(short-circuit proof)Output Type: Floating or single-endedMaximum Common Mode Voltage: ±1V ACCURACY:Relative Amplitude Accuracy : ±0.1dBre level at 1V from 1mV to 5VFrequency Accuracy and Stability : ±0.01%

DC Offset Error: automatic compensation.Max. error (within 1hour, ±5°C): 0.1 mV or 50dBbelow peak signal level, whichever is greaterPINK FILTER: Gain Accuracy: ±0.1dB at 1kHzFrequency Response: ±0.2dB from 22.4Hz to102.4kHzCOMMON MODE REJECTION:0 to 1kHz: 60dB1kHz to 102.4kHz: 40dBCONTROL:Burst Mode: For sine tone burst and burst ran-dom

Burst Width : 61µs to 64s (resolution 25 kHzmode: 15µs; 100 kHz mode: 4µs)Burst Repetition : 1 to 9999, or continuousRepetition Period : 488µs to 64s (resolution:25 kHz mode: 15 µs; 100 kHz mode: 4µs)

Pattern Repetition: For single-swept sine,pseudo-random, multisine, periodic random,pulse, user-definable waveforms

Number of Pattern Repetitions: 1 to 9999or continuous. (For single swept sine with logbi-directional sweep and swept dual-sine, rep-etition is only continuous)

Soft Start and Stop (25.6 kHz mode only):Ramps the signal level up/down exponentiallyon start/stop

Start/Stop Time: 0 to 99.9s, resolution 0.1sStart/Stop Range: 0 to 80 dB, resolution 1 dB

Trigger: To synchronize recording with the gen-erator

Swept SIne: At start of sweepPulse: On the positive slopeMultisine, Pseudo-random, repetitive User-definable waveform: At start of each se-quencePeriodic Random: At start of last sequenceof each periodBurst Mode: At start of burst

PRE-DEFINED WAVEFORMS:SINE:

Frequency Range : 1mHz to 102.4kHzFrequency Setting Resolution : 1mHzFrequency Accuracy : ±(0.01% +1mHz)Absolute Amplitude Accuracy:±0.05dB at 992Hz, 1VRMS, 20°C±0.1dB at 992Hz, 1mV to 3.5VRMSFrequency Response:±0.1dB re 992Hz: 1mHz to 25.6kHz±0.2dB re 992Hz: 25.6kHz to 102.4kHzHarmonic & Spurious Distortion Products:(excl. DC): at least 80dB below signal levelor 1µV, whichever is greater

DUAL-SINE:Two sine waveforms with individually selecta-ble frequency and level, as for sine above.

SWEPT SINE:Linear or logarithmic sweepSweep Range: Linear sweep or logarithmic uni-directionalsweep: 1mHz to 102.4kHz (resolution 1mHz) Logarithmic bi-directional sweep: 10 Hz to 102.4 kHz (resolution 1 mHz)Sweep Rate:Linear sweep: 1mHz/s to 999kHz/s (resolution1mHz/s)Log uni-directional sweep: 0.02 dec/s to9999dec/s (resolution 0.02dec/s)Log bi-directional sweep: 25.6 kHz mode: 0.1 dec/s to 9999 dec/s (res-olution 0.02 dec/s)102.4 kHz mode: 2 dec/s to 9999 dec/s (res-olution 0.02 dec/sSweep Direction: Up or downSweep Mode: Uni- or Bi-directionalRepetition: Single, 1 to 9999 or continuous(for bi-directional log sweep only continuous)

DUAL-SWEPT SINE:Choice of two signal combinations:One fixed sine and one swept sineTwo swept sines with fixed frequencydifferenceSweep Range: Linear sweep: 1 mHz to 102.4 kHz (resolution1 mHz)Logarithmic sweep: 10 Hz to 102.4 kHz (reso-lution 1 mHz)Sweep Rate:Linear sweep: 1 mHz/s to 999 kHz/s (resolu-tion 1 mHz/s)Logarithmic sweep:25.6 kHz mode: 0.1 dec/s to 9999 dec/s (res-olution 0.02 dec/s)102.4 kHz mode: 2 dec/s to 9999 dec/s (reso-lution 0.02 dec/s)Repetition: ContinuousFrequency Difference: 1mHz to 9kHz(resolution 1mHz)

RANDOM:Random noise; can be band-limited and band-translated to match the selectedfrequency span (25.6 kHz mode only)

Frequency Range:25.6kHz mode: Low-pass or band-pass14 frequency spans from 3.13 Hz to 25.6 kHzBand-pass centre frequency resolution: 1 mHz102.4 kHz mode: 51.2 kHz or 102.4 kHz low-pass noise.Frequency Response: Flat ±0.2dB within se-lected spanGenerator Type: Pseudo-randomSequence Length: 8192s minimumAmplitude Distribution: Symmetrical Gaus-sianPhase Distribution: UniformCrest Factor: Selectable from 2.5 to 6 (25.6kHz low-pass frequency span only)Burst Mode: Selectable width, number andperiod (25.6 kHz mode only)

PSEUDO-RANDOM:Waveform can be band-limited and band-translated to match the selected frequencyspan. Number and spacing of spectral linescan be selected to coincide with analysis lines.Phase spectrum is adjusted to achieve Sym-metrical Gaussian amplitude distribution.Frequency Range:As RandomNumber of Spectral Lines: Constant linespacing: 50, 100, 200, 400, 800, 1600, 3200,6400Frequency Response: Flat ±0.2dB withinselected span

MULTISINE:The same as Pseudo-random, except that thephase spectrum is adjusted to minimize thecrest factor. The spectral line spacing can beconstant within the selected frequency span,or it can be relative to the octave centre fre-quency but constant within the octave with 44lines per octaveCONSTANT LINE SPACING:Frequency Range: As RandomCrest Factor: <2RELATIVE LINE SPACING (25.6 kHz modeonly):Frequency Range: From 1 to 14 octaves from1.6 Hz to 20 kHz 1/3 octave centre frequencies

PERIODIC RANDOM (25 kHz mode only): Sequences of pseudo-random signals.Number of periods of identically pseudo-ran-dom signals are selectable (same number ofperiods in each sequence)Frequency Range:Number of periods <10: 25.6 kHz low-passNumber of periods ≥10: Low-pass or band-pass. 14 frequency spans from 3.131Hz to25.6 kHz. Band-pass centre frequency resolu-tion: 1 mHzNumber of Spectral Lines: 50, 100, 200,400, 800, 1600, 3200Number of Periods: 4 to 99

PULSE:Waveforms: Rectangular, Hanning or Gaus-sianPulse Width:25.6 kHz mode: From 15 µs to 64 s (resolution 15 µs)102.4 kHz mode: From 4 µs to 64 s (resolution 4 µs) Width can be selected to match one analysissample periodRepetition Time:25.6 kHz mode: From 46 µs to 64 s (resolution 15 µs)102.4 kHz mode: From 11 µs to 64 s (resolution 4µs)Analog Smoothing Filter: Can bebypassed

USER-DEFINABLE WAVEFORMS:Frequency Range:25.6 kHz mode: 14 frequency spans from 3.13Hz to 25.6 kHz102.4 kHz mode: 51.2 kHz to 102.4 kHzUSER-DEFINABLE TIME FUNCTIONS:Load and replay time functions up to64Ksamples. Complex frequency spectra can be

transformed to time and replayed. The time func-tion can be repeated.Off-time : 0 to 64s (resolution 4µs)Analog Smoothing Filter: Can be bypassedUSER-DEFINABLE AUTOSPECTRUM:With selectable phase spectrum is transformedto a time sequence up to 2 KsamplesPhase Spectrum:25.6 kHz mode: 0°, pseudo-random or periodicrandom102.4 kHz mode: 0°, or pseudo-randomNumber Of Spectral Lines: 64, 128, 256, 512,1024Time Sequence: 128, 256, 512, 1024, 2048samples

INTENSITY PROBE/REMOTE CONTROL CONNECTOR:18-pin connector for:• Two microphone signals• Microphone polarization: 0, 28 or 200 V from

2 MΩ source• Preamplifier voltage• 15 V power supply for remote control unit• RS422A interface for remote control unitSound Intensity Probes Supported: Type 3583 and 3584 (and earlier Types 3545and 3548)Remote Control Units Supported:ZH 0354 and ZB 0017Internal Connections (in 2035):The two signals from the probe are internallyconnected to the Ch.A and Ch. B single-channelinput modules.SAMPLING:The module provides sample clock for inputmodules in 2035:3019 25 kHz Input Module3020 100 kHz Input Module3023 4-channel Input ModuleSampling Input/output: BNT connector for out-put of the system sampling frequency or, whenset to external sampling, input of the externalsampling frequencySampling Input:

Maximum Frequency: 262.5 kHzThreshold Level: Adjustable from 0.1V to 5V (factory setting 1.2 V)Input Impedance: 50Ω (>100 kΩ selectable internally)Maximum Input: 5 V RMS @ 50 Ω, 15 V RMS @ >100 kΩWhen set to external sampling, all absolutefrequency values in the 3550 system must bemultiplied by a factor c: c = Actual externalsampling frequency/262.144kHz

Sampling Output:Frequency: 262.144kHzLevel: TTL compatibleOutput Impedance: 50Ω (short-circuit proof)

TRIGGER INPUT:BNT connector for input of external trigger,measurement start, update and stopTrigger Level: Adjustable from 0.1V to 5V (fac-tory setting 1.2 V)Input Impedance: >100kΩMaximum Input: 15 V RMSSupply for Tachometer Probe MM 0012 andMM 0024: +8 V DC on inner shield (short-circuitproof)

ACCESSORIES INCLUDED:

UA1145: Front Panel Kit

ACCESSORIES AVAILABLE:WH 3010: Extended UDW memory (256K

samples)

19

20

Sampling Module Type 3018 providesboth the sampling clock and the ex-ternal trigger input for configura-tions which do not include Generator& Sampling Module Type 3106, andare based on the 2035 analyzer alone(no 2816).

Type 3018 is installed in Type 2035in place of the generator module. Ithas connectors for external trigger in-put and for sampling input/output.The external trigger input also pro-vides the power supply for a tachom-eter probe (MM 0012 or MM 0024).

Sampling Module – Type 3018

Simulator Unit ZZ0220 is designedto simulate a range of machines,structures and acoustic systems thatcan be measured and analysed using3550 system.

It can generate signals to simulatea machine at constant speed or dur-ing a run-up or a coast-down. It hastwo filter networks that can simulatea single-degree-of-freedom or a two-degree-of-freedom mechanical sys-tem. A built-in delay is provided tosimulate an acoustic delay.

ZZ 0220 provides the known, meas-ured, system responses used in the3550 system guided tours document-ed in 3550 User Manual Vol. 1.

Gen. input and the Ch. A, Ch. Boutputs are fully compatible with the3550 range of generator and inputmodules

Filters 1 and 2 simulate mechani-cal systems with 1 and 2 degree-of-freedom responses.

Simulator Unit – ZZ0220

ZZ 0220 simulates acoustic, mechanical and oth-er systems. It contains:• 2 electronic systems• Noise generators contaminating the measured

input and output signals• Delay line• 3 signal sources at the system inputELECTRONIC SYSTEMS (Filters):

NOISE GENERATORS:At input: 4µV2/HzAt output: 10nV2/HzDELAY LINE:Delay: 3ms. Gain: −6dBSIGNAL SOURCES:White Noise: (From generator at output)

Level: 10µV2/HzSquare Wave:

Amplitude: 5 VppFrequency: 500 Hz

Swept Square Wave:Amplitude: 5 VppSweep: Single up/down: 200/2000/200 HzSweep time: Up: 6s. Down: 18s

INPUT/OUTPUTInput: From Generator Module 3106 or 3107

Output: From system input/output to analyzerchannels A and BGENERAL:Power Requirements: Power from 2035 usingcable AQ 0035Dimensions:

Height: 200mm (7.9in)Width: 126mm (5.0in)Depth: 46mm (1.8in)

Weight: 0.83kg (1.83lb.)

ACCESSORIES INCLUDED:3 × AO0087: BNC to BNC coaxial cablesAQ0035: Power Cable

System 1 System 2

Degrees of freedom

1 2

Resonance Frequency

1900 Hz 800 Hz 1900 Hz

Damping Ratio

5% 1% 5%

Provides sample clock for input modules inthe 2035:3019 25 kHz Input Module3020 100 kHz Input Module3023 4-channel Input ModuleSAMPLING INPUT/OUTPUT:BNT connector for output of the system samplingfrequency or, when set to external sampling, in-put of the external sampling frequencySAMPLING INPUT:

Maximum Frequency: 262.5kHzThreshold Level: Adjustable from 0.1V to 5V(factory setting: 1.2 V)Input Impedance: 50Ω (>100 kΩ selectable in-ternally)

Maximum Input: 5 V RMS @ 50 Ω, 15 V RMS@ >100 kΩWhen set to external sampling, all absolute fre-quency values in the 3550 system must be mul-tiplied by a factor c: c = Actual externalsampling frequency/262.144 kHzSAMPLING OUTPUT:Frequency: 262.144 kHzLevel: TTL compatibleOutput Impedance: 50 Ω (short-circuit proof)TRIGGER INPUT:BNT connector for input of external trigger,measurement start, update and stopTrigger Level: Adjustable from 0.1 V to 5 V (fac-tory setting: 1.2 V)

Input Impedance: >100 kΩMaximum input: 15 V RMSSupply for Tachometer Probe MM0012 andMM0024: +8 V DC on inner shield (short-circuitproof)

ACCESSORIES INCLUDED:UA1144: Front Panel Kit

ACCESSORIES AVAILABLE:IWH2783: Intensity Probe/Remote Control

Connector

Multichannel Data Acquisition Unit – Type 2816

3107or

3017or

5955

3015or

3107

301530153015or

3016

75212816 3015or

3016

3015or

3016

3015or

3016

3015or

3107

10976510Slot: 2 3 4 8

3107or

3017or

5955

Multichannel Data Acquisition UnitType 2816 is a mainframe with powersupply and back-plane wiring for aninterface module and up to 10 mod-ules. Type 2816 connects directly toSignal Analyzer Unit Type 2035

through the coaxial (serial interface)cable AO 0370.

The 2816 is used to house modulesfor multichannel 3550 system config-urations. Two 2816 units can be usedtogether in a 3550 system.

Specifications 2816

Modules Available for 2816:Type 3015: 25 kHz Input ModuleType 3016: 100 kHz Input ModuleType 3017: Sound Intensity ModuleType 3107: Generator ModuleType 5955: Signal Output ModuleType 7521: Signal Analyzer

Interface ModuleFA1009: Blank Panel

ConfigurationThere are 11 slots (module locations)in 2816, numbered from left to right(see Fig. 10).

Slot 0 must contain a Signal Ana-lyzer Interface Module Type 7521.Slots 1 to 10 can contain combina-tions of modules, subject to the fol-lowing maximum number for eachtype:

8 3015 (25 kHz) input modules4 3016 (100 kHz) input modules2 3017 Sound intensity modules4 3107 Generator modules2 5955 Signal output modulesInput modules are installed in ad-

joining slots from left to right. Types3015 and 3016 may be installed to-gether in 2816, but they cannot beactivated at the same time.

Generator and sound intensitymodules are installed in adjoiningslots from the right to left (seeFig.10).

Sound intensity modules must al-ways be placed in slots to the rightof the generator modules.

911815/1e

Fig.10 Allowable installation of modules in Multichannel Data Acquisition Unit 2816

Type 2816 is a mainframe with power supply and11 slots for modules:AVAILABLE MODULES:3015 25 kHz Input Module3016 100 kHz Input Module3017 Sound Intensity Module3107 Generator Module5955 Signal Output Module7521 Signal Analyzer Interface ModuleFA1009 Blank PanelMAXIMUM NUMBER OF MODULES:8 25 kHz Input Modules Type 30154 100 kHz Input Modules Type 30162 Sound Intensity Modules Type 30174 Generator Modules Type 30172 Signal Output Modules Type 59551 Signal Analyzer Interface Module Type 7521CONNECTION TO 2035:Up to two 2816s can be connected directly to a2035 using 1 cable AO 0370 per 2816, and 1

Signal Analyzer Interface Module Type 7521 per2816The 2035 must include:3157 100 kHz/Multichannel Zoom Processor7520 Multichannel Data Acquisition Interface7640 Multichannel Analysis Software7649 Dual-channel Analysis SoftwarePOWER REQUIREMENTS:Voltage:100, 115, 127, 200, 220 or 230/240V AC ±10%Frequency:47.5 - 66 Hz, or 400 Hz ± 10% at 115 VPower consumption: 300 - 350 VAwhen fitted with:1 × 7521 Signal Processor & IEEE Interface8 × 3015 25 kHz Input Module2 × 3107 Generator ModuleGENERAL:Cabinet: Supplied as Model A (lightweight metalcabinet) or Model C (as A but with airtray andflanges for standard 19 inch racks)

Dimensions: (A-cabinet without feet)Height: 177 mm (7.0 inches)Width: 430 mm (16.9 inches)Depth: 500 mm (19.7 inches)Weight: 23 kg (51lb.) when fitted with 11 blankpanels FA 100931 kg (68lb.) when fitted with:1 × 7521 Signal Analyzer Interface Module8 × 3015 25 kHz Input Module

2 × 3107 Generator Module

ACCESSORIES INCLUDED:Mains Cable

2 × VF 0015: Spare fuses T 5A/250V

ACCESSORIES AVAILABLE:

FA1009: Blank PanelUA1124: Kit for mounting 2816 in 19 inch

standard racks

21

Multichannel Analysis Software Type7640 is required for configurationswith input modules installed in 2816.

It implements the input/output def-inition setup where inputs and out-puts of the system under test, andtheir slot allocations in the 2816units, are defined.

In the multichannel calculationsetup you define the basic data andcalculations required for the applica-tion. Thus only the required data are

processed and the speed of the anal-ysis is optimized.

7640 software supports multichan-nel measurements with up to 16channels. The analysis is done in par-allel with simultaneous sampling ofall channels.

The frequency response functionsof a system with up to two excitationinputs can be calculated. Calculationof ordinary and multiple coherence,

coherent power, non-coherent powerand signal/noise ratio is provided.

1/n-octave synthesis of narrowband spectra can be performed on allfrequency domain functions.

In combination with ExtendedAnalysis Software Type 7639, ordertracking, amplitude and phase de-modulation, time history and ampli-tude probability are available inmultichannel mode.

Multichannel Data Acquisition Interface – Type 7520Multichannel Data Acquisition Inter-face Type 7520 must be fitted in theSignal Analyzer Unit Type 2035 forall 2816-based multichannel configu-rations of 3550 system.

Type 7520 handles all the datatransmissions and control communi-cations between 2035 and up to twoMultichannel Data Acquisition UnitsType 2816.

Multichannel Data Acquisition Interface Type7520 must be installed in the Signal AnalyzerType 2035 for all 2816-based multichannel con-figurations of 3550 systems. Type 7520 handlesall the data transmission and controls communi-cation between the 2035 and up to two Mul-tichannel Data Acquisition Units Type 2816.MAIN FUNCTIONS:Transmits setups and programs to 7521 in 2816.Receives sampled data from all active input modules in 2816INTERFACE:Type: Serial, differentialRate: 41.94 M baudACCESSORIES INCLUDED:AO 0158: BNT to BNT Cable (3 m) for

connecting the sampling Input/Outputs between 2816s

Multichannel Analysis Software – Type 7640

Specifications 7640
To run Multichannel Analysis Software Type7640, Dual-channel Analysis Software Type7649 must also be loaded
Type 7640 is used for multichannel measure-ments with simultaneous sampling in up to 16channels. The multichannel mode measures thesignals from the input modules in the 2816 andcontrols the generator modules in the 2816. In-put or generator modules installed in the 2035cannot be used in multichannel mode.MULTICHANNEL INPUT/OUTPUT DEFINITION:The number of input (X) and output (Y) signalsto the system-under-test is defined in the input/output definition page in “system setups”.Identification of the signals, and their slot allo-cations in 2816, are also specified on the samepageTRANSDUCER SETUP:Identification of the transducers connected toeach channel, and the transducer sensitivities,are entered in the transducer setup in “systemsetups”INPUT CONDITIONING:The conditioning required for each channel isdefined in the multichannel conditioning setupMEASUREMENT MODESAll the measurement modes which are availablein single- and dual-channel mode are also avail-able in multichannel mode.

MAXIMUM NUMBER OF CHANNELSMaximum number of active channels dependson the measurement mode:

NUMBER OF SPECTRAL LINES:Selectable: 50, 100, 200, 400 or 800TRIGGER:Any channel can be used for internal triggerWEIGHTING:Can be specified individually for each signal

DELAY:

Can be specified individually for each signal rel-ative to a selectable reference signalCALCULATED DATA:In spectrum averaging mode, and spectrum av-eraging, zero pad mode, all independent auto-and cross-spectra can be calculated and aver-aged. The user specifies which of the followingbasic data are to be calculated and stored:

• Input instantaneous time x

• Output instantaneous time y• Input autospectra GXiXi

• Input cross-spectra GXiXj

• Output autospectra GYiYi

• Output cross-spectra GYiYj

• Input/output cross-spectra GXiYj

MEASUREMENT CAPABILITY:Memory Capacity for Basic Data: 128Kwords

The memory required for basic data in spectrumaveraging mode depends on:

The number of input signals (NX)

The number of output signals (NY)

The number of spectral lines (NOSL)The number of averaged spectral lines(NOAS)

The set of basic data to be calculated

Measurement modeMaximum number of

channels

Spectrum averaging, spectrum averaging

zero pad

16

Multifunction*, 1/n-octave spectrum aver-

aging, time capture

2

Time history, signal enhancement, ampli-

tude probability

16

*Only one function type can be stored in the multibuffer

22

The memory capacity (number of words) re-quired is given by:

where: x, y, GXiXi, GYiYi, GXiXj, GYiYj and GXiYjare 1 or 0 depending on the selection of basiccalculated dataFUNCTIONS CALCULATED:All functions are indexed with input, output num-bers (Xi,Yj).The functions that can be obtained depend onthe basic calculated data selection

Single Input/Multiple Output (SIMO) Systems:All the functions that can be calculated in singleand dual-channel spectrum averaging mode areavailable in multichannel spectrum averagingmodeDual Input/Multiple Output Systems:All the ordinary single- and dual-channel func-tions, plus multiple version of the following func-tions:• Coherence• Signal-to-Noise ratio• Coherent power• Noncoherent powerMultiple Input/Multiple Output (MIMO)Sys-tems: For systems with more than two inputs allsingle- and dual-channel functions are availableexcept:• Frequency response function• 1/Frequency response function• Impulse response• Multiple coherence and related functions

TRACKING:Available only when Extended Analysis SoftwareType 7639 or Tracking Analysis Software Type7670 is also loadedNumber of channels: 1 to 16Any channel can be selected to measure tachofrequencyAMPLITUDE AND PHASE DEMODULATION:Available only when Extended Analysis SoftwareType 7639 or Vibration Diagnostic Software Type7672 is also loadedNumber of channels: 1 to 161/N-OCTAVE ANALYSIS:Single-channel 1/n-octave analysis as providedin Type 7649 Dual-channel Analysis Software isavailable for any channelDual-channel 1/n-octave analysis is available forany pair of channelsGENERATORS:Up to 8 Generator Modules Type 3107 can becontrolled

x × NX × (NOSL × 2.56 + 16)

+ GXiXi × NX × (NOAS × 2 + 16)

+ GXiXj × NX(NX-1)/2 × (NOAS × 4 + 16)

y+ × NY × (NOSL × 2.56 + 16)

+ GYiYi × NY × (NOAS × 2 + 16)

+ GYiYj × NY(NY-1)/2 × (NOAS × 4 + 16)

+ GXiYj × NX × NY × (NOAS × 4 + 16)

Signal Analyzer Interface Module – Type 7521

A Signal Analyzer Interface ModuleType 7521 must be installed in slot0 of each Multichannel Data Acquisi-tion Unit Type 2816 included in a3550 system. The 7521 controls and

The 7521 interfaces the Multichannel Data Ac-quisition Unit Type 2816 to the Signal AnalyzerUnit Type 2035. The 7521 must be installed inslot 0 in each 2816 in the 3550 MultichannelAnalysis SystemMAIN FUNCTIONS:• Identifies all modules in the 2816• Transmits setups and programs to all modules• Provides all input modules and generator

modules with sample clock• Transmits sampled data from all active input

modules to analyzerMAXIMUM NUMBER OF CHANNELS:The maximum number of active input channelsdepends on the type of input module and theupper frequency limit (see table):INPUT/OUTPUTSampling Input:BNT connector for input of the external samplingfrequency

Maximum Frequency: 262.5 kHz. When setto external sampling, all absolute frequencyvalues in the 3550 system must be multiplied

Specifications 7521

routes communications between thesignal analyzer unit and modules inthe 2816(s), including communica-tions with a remote control unit con-nected to a sound intensity modulein 2816.

Sampling Frequency and Trigger7521 contains the sampling clock andthe trigger input for a multichannelsystem. When two 2816 units areused together, Type 7521 in Unit 1provides the master sampling outputwhich is connected to the samplinginput of the 7521 in Unit 2.

Input ModulesThe 7521 can identify, setup, andtransmit data from up to 8 input

modules depending on the frequencyrange:

Generator ModulesThe 7521 can identify and set up asmany as four Generator ModulesType 3107, provide them with clockfrequency and start them simultane-ously.

Input ModuleUpper

Frequency Limit

Number of Modules

100 kHz(3016)

51.2 to 102.4 kHz

2

up to 51.2 kHz

4

25 kHz(3015)

up to 25.6 kHz

8

23

by a factor c: c = Actual external samplingfrequency/262.144kHzThreshold Level: Adjustable from 0.1V to 5V(factory setting: 1.2 V)Input Impedance: 50Ω (>100 kΩ selectableinternally)

Maximum Input: 5 V RMS @ 50 Ω, 15 V RMS@ >100 kΩ

Sampling Output:BNT connector for output of the system samplingfrequency

Frequency: 262.144kHzLevel: TTL compatibleOutput Impedance: 50Ω (short-circuit proof)

Trigger Input:BNT connector for input of external trigger,measurement start, update and stop

Trigger Level: Adjustable from 0.1V to 5V(factory setting: 1.2 V)Input Impedance: >100kΩMaximum input: 15 V RMSSupply for Tachometer Probe MM0012 andMM0024: +8 V DC on inner shield (short-cir-cuit proof)

ACCESSORIES INCLUDED:AO0370: Coaxial cable for interconnection

of 2035 and 2816, 2m

Input Module

Upper Frequency

Limit

Max. Number of

Active Input Channels

100 kHz 51.2 up to 102.4 kHz

2

up to 51.2 kHz

4

25 kHz up to 25.6 kHz

8

25kHz and 100kHz Input Modules – Types 3015 & 301625 kHz Input Module Type 3015 isused with the 2816. The 3015 has afront panel designed for vertical in-stallation.

The specifications of 3015 and 3019are identical, and the modules can beinterchanged by fitting the appropri-ate front panel kit. 3015 can be mod-ified to 3019 using Front Panel KitUA 1139.

100 kHz Input Module Type 3016corresponds, in the same way, with100 kHz Input Module Type 3020.3016 can be modified to 3020 usingFront Panel Kit UA 1141.

A maximum of four 3016s can beused in a single multichannel config-uration.

25kHz Input Module Type 3015 100kHz Input Module Type 3016

TYPE 3015:Specification as Type 3019

TYPE 3016:Specification as Type 3020

24

Sound Intensity Module Type 3017 isa plug-in module for installation in2816. It has two 18-pin sockets fordirect connection of two sound inten-sity probes (Type 3583 or Type 3584).A Remote Control Unit ZH 0354 orZB 0017 can be used.

Each active probe requires two in-put modules (Type 3015 or Type3016) to be installed in appropriate

Sound Intensity Module – Type 3017

ACCESSORIES INCLUDED:DD0424: TNC shielding plug

slots in 2816 – these process the twomicrophone signals from the probe.The sound intensity module directsthe signals internally to the condi-tioning modules, and supports theRS 422A interface of the remote con-trol units.

A switch on 3017 (not controlledfrom 2035) sets the polarization volt-age for both microphone pairs.

INTENSITY PROBE/REMOTE CONTROL CONNECTOR:Two 18-pin connectorsEach carries:• 2 microphone signals• microphone polarization: 0, 28 or 200 V from

2 MΩ source• preamplifier voltage• 15 V power supply for Remote Control Unit• RS422-A interface for Remote Control UnitSOUND INTENSITY PROBES SUPPORTED:Types 3545 and 3548 (and earlier Types 3545and 3548)REMOTE CONTROL UNITS SUPPORTED:ZH 0354 and ZB 0017

INTERNAL CONNECTIONS:The microphone signals are connected internallyto the following input module slots:

Probe ConnectorInput

Module SlotSlotConnector

No.

101 1 & 2

2 3 & 4

91 5 & 6

2 7 & 8

DYNAMIC RANGE:All distortion (intermodulation and harmonic) andspurious signals at least 80 dB below maximuminput for maximum peak input > 40 mVACCURACY PARAMETERS:See specifications for Types 3019, 3020

25

Generator Module Type 3107 is de-signed for installation in 2816. Itsspecification is similar to that of thegenerator in Type 3106, with addi-tional specifications required for mul-ti-generator applications.

Up to four 3107 modules can beoperated together in one 2816 unit.

Random or burst random signalsfrom different generator modules areuncorrelated.

The phase between sine wavesfrom different generator modules canbe set.

Generator Module – Type 3107

These specifications are only valid in conjunctionwith Type 7640 and 7649 software.All generator specifications as 3106 with the fol-lowing additions:PHASE MATCH BETWEEN MODULES:Without pink filter:0 to 0.1×fU: 0.5°0.1× fU to fU: 5× (f/ fU)°Where fU=25.6kHz or 102.4kHzWhen two 2816 units are used together, manualadjustment of delay is requiredSINE:Phase: Selectable between modules:−360° to +360° (resolution 0.1°)CORRELATION BETWEEN MODULES:None for output waveform Random only

Signal Output Module – Type 5955Signal Output Module Type 5955 isa 4-channel analog output module de-signed for installation in 2816. Itsprincipal applications are to facilitatethe output for storage of time historydata on recorders, and to allow mon-itoring of analog signals during test.

Each active output channel re-quires an active input module (Type3015 or Type 3016) to provide a con-ditioned signal

The 5955 Signal Output Module is a 4-channelanalog output module for storage of time historyon recording instruments, or for monitoring theanalog signal during measurementsOutput: Via BNC socketOutput Level: 1V for input signal equal to inputvoltage rangeFrequency Range: 0.5 Hz to 100 kHzInput Coupling: ACHigh Pass Filter: –3 dB at 0.06Hz. Slope 6 dB/octave

Dynamic Range: All distortion (intermodulationand harmonic) and spurious at least 80dB belowmaximum output for maximum load = 10kΩ//1nFOutput Differential Impedance: 50ΩMaximum Output Current: ±10mA (short-cir-cuit proof)Maximum Output Offset: 3mVOutput Type: Floating or Single-ended. Manu-ally selectable for each channelMaximum Common-mode Voltage: ±1VCommon-mode Rejection: 0 to 1kHz: 60dB

1kHz to 100kHz: 40dBGain Accuracy: ±0.15dB at 1kHzincluding input moduleOverall Frequency Response: ± 0.1dB re 1kHz from 0.5Hz to 100kHzChannel to Channel Match: Maximum phase difference:1Hz to 10Hz: (5.2- f/2)°10Hz to 4kHz: 0.2°4kHz to 102.4kHz: (f/20k)°

Brüel & Kjær B

BP 1022 – 15

WORLD HEADQUARTERS: DK-2850 Nærum • D

The table below shows the componentTypes required for a number of typicaldual-channel and multichannel 3550 sys-tem configurations.

DUAL-CHANNEL CONFIGURATIONS:Configurations are shown for 25 kHz and100 kHz options, both excluding (−) andincluding (+) a signal generator module

Type 2035 Signal Analyzer Unit

Type 2816 Multichannel Data Acquisition Unit

Type 3015 25kHz Input Module


Type 3017 Sound Intensity Module

Type 3018 Sampling Module



Type 3023 4-channel Input Module

Type 3106 Generator and Sampling Module

Type 3107 Generator Module

Type 3156 25kHz Zoom Processor

Type 3157 100kHz/Multichannel Zoom Processo

Type 5955 Signal Output Module

Type 7520 Multichannel Data Acquisition Interfac

Type 7521 Signal Analyzer Interface Module

Type 7639, 7670, 7671, 7672Extended Analysis Software

Type 7640 Multichannel Analysis Software

Type 7649 Dual-channel Analysis Software

Type 7674 4/8-channel Analysis Software

ZZ 0220 Simulator Unit

Item required for configuration Two sound intensity probes can be connecte 25kHz and 100kHz input modules cannot be

Brüel&Kjær rese

MULTICHANNEL CONFIGURATIONS:Multichannel configurations can either beconstructed using the Signal Analyzer UnitType 2035 alone with one or two 4-channelinput modules (for multichannel configura-tions of up to 8 channels and one gener-ator), or using one or two MultichannelData Acquisition Modules Type 2816, forup to 16 channels and 8 generators.

K

enmark • Telephone: +4542800500 •Telex: 37316

DUAL-CHANNEL

− generator + generato

Page 25 kHz 100kHz 25 kHz 10

9

21

24

24

24

20

16 2 2

16 2

17

17

25

11

r 11 Option Option

25

e 22

23

14 Option Option Option O

22

11

14

20 Option Option Option O

d to 3017, each probe requires two input modules operated together

rves the right to change specifications and accessor

For 2816-based configurations, each 2816unit has 10 slots available for input/outputmodules. All unused slots must be coveredwith a blank panel (FA1009)

ACCESSORIES:Included and available accessories arelisted in the 3550 system specification,and in the individual specifications foreach Type number

96/01

bruka dk • Fax: +4542801405 • e-mail: [email protected]

MULTICHANNEL

2816 Configuration 3023 in 2035

r Max. number of Channels

0kHz 4 8 16 8

2

2 to 4 2 to 8 2 to 16

2 to 4 2 to 4 2 to 4

0 to 1 0 to 2 0 to 4

or 3106

2

1 or 2

or 3018

0 to 4 0 to 4 0 to 8

0 to 1 0 to 2 0 to 4

2

ption Option Option Option Option

ption Option Option Option Option

ies without notice

Documents

Please note that the links in the P logotype above are “live” · 2018. 9. 25. · 7674, ZZ0220 USES: General purpose signal and system analysis of mechanical, electrical and mechatronic