Snell & Wilcox - Grass Valley...TEL +44 (0)1730 821 188 FAX +44 (0)1730 821 199 MDD500S MDD500S211298 Version 1 Issue 3 SNELL & WILCOX 0.1. ... (BS EN 50081-1 for emission and BS EN

Snell & Wilcox

NTSC Decoder

© December 1998

Operator’s Manual

SNELL & WILCOX LTDDURFORD MILL, PETERSFIELD, HANTS. GU31 5AZ UNITED KINGDOMTEL +44 (0)1730 821 188 FAX +44 (0)1730 821 199

MDD500S

MDD500S211298 Version 1 Issue 3 SNELL & WILCOX 0.1

Safety WarningsAlways ensure that the unit is properly earthed and power connections correctly made.

This equipment shall be supplied from a power system providing a PROTECTIVE EARTH connection andhaving a neutral connection which can be reliably identified.

The power terminals of the IEC mains input connector on the rear panel are identified as shown below:

E = Protective Earth Conductor

N = Neutral Conductor

L = Live Conductor

Power cable supplied for countries other than the USA The equipment is normally shipped with a power cable with a standard IEC moulded free socket on one end anda standard IEC moulded plug on the other. If you are required to remove the moulded mains supply plug, disposeof the plug immediately in a safe manner. The colour code for the lead is as follows:

GREEN/YELLOW lead connected to E (Protective Earth Conductor)BLUE lead connected to N (Neutral Conductor)BROWN lead connected to L (Live Conductor)

Power cable supplied for the USAThe equipment is shipped with a power cord with a standard IEC moulded free socket on one end and a standard3-pin plug on the other. If you are required to remove the moulded mains supply plug, dispose of theplugimmediately in a safe manner. The colour code for the lead is as follows:

GREEN lead connected to E (Protective Earth Conductor)WHITE lead connected to N (Neutral Conductor)BLACK lead connected to L (Live Conductor)

The terminals of the IEC mains supply lead are identified as shown opposite:

Note that for equipment that is not fitted with a mains power switch, to comply with BS60950 Clauses 1.7.2 and2.6.9, the power outlet suppling power to the unit should be close to the unit and easily accessible.

No part of this publication may be transmitted or reproduced in any form or by any means, electronic or mechanical,including photocopy, recording or any information storage and retrieval system, without permission being granted,in writing, by the publishers or their authorised agents.

Warnings Voltages within this unit can be lethal under certain circumstances. Where poweris required to be connected to the unit during servicing great care must be taken toavoid contact with these voltages.

Maintenance should only be carried out by suitably qualified personnel.


EMC Standards

This unit has been designed to conform to the following standards:

Electromagnetic Compatibility-Generic Immunity Standard BS EN 50082-1:1992

The European Standard EN 50082-1:1992 has the status of a British Standard and is related toEuropean Council Directive 89/336/EEC dated 3rd May 1989.

Electromagnetic Compatibility-Generic Emission Standard BS EN 50081-1:1992

The European Standard EN 50081-1:1992 has the status of a British Standard and is related toEuropean Council Directive 89/336/EEC dated 3rd May 1989.

Safety Standards

This unit conforms to EN60950:1992 as ammended by ammendment A1(May 1993)and ammendment A2(March 1994). Specification for safety of technology equipment,including electrical business equipment.

EMC Performance of Cables and Connectors

Snell & Wilcox products are designed to meet or exceed the requirements of the appropriate EuropeanEMC standards. In order to achieve this performance in real installations it is essential to use cablesand connectors with good EMC characteristics.

All signal connections (including remote control connections) shall be made with screened cablesterminated in connectors having a metal shell. The cable screen shall have a large-area contact withthe metal shell.

COAXIAL CABLES

Coaxial cables connections (particularly serial digital video connections) shall be made with high-qualitydouble-screened coaxial cables such as Belden 8281 or BBC type PSF1/2M.

D-TYPE CONNECTORS

D-type connectors shall have metal shells making good RF contact with the cable screen. Connectorshaving "dimples" which improve the contact between the plug and socket shells, are recommended.

CAUTION: These servicing instructions are for use by qualified personnel only. To reduce the risk ofelectric shock, do not perform any servicing other than that contained in the Operating Instructionsunless you are qualified to do so. Refer all servicing to qualified service personnel.


Table of Contents

SECTION

1 Introduction

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2

Operational Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3

2 Specifications

3 Installation

Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1

Communication Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2

Input Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3

Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4

4 Operation

Menu System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . opp. 4.1

Control Panel and Menu System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1

Dedicated Push Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4

Menu Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5

Card Edge Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.10

5 Appendices

Appendix 1 ‘Proposed SMPTE Standard for Fault reporting in Television Systems’ . . . 5.1

Appendix 2 ‘Proposed SMPTE Recommended Practice’ . . . . . . . . . . . . . . . . . 5.5

Packing List

The unit is supplied in a dedicated packing carton provided by the manufacturer and should not be acceptedif delivered in inferior or unauthorised materials. Carefully unpack the carton and check for any shippingdamage or shortages.

Any shortages or damage should be reported to the supplier immediately.

Enclosures: * MDD500S Decoder* Power cable* Operator’s Handbook


Manual Revision Record

Date Version No. Issue No. Change Comments

061098 1 1 First Issue

011298 1 2 UL data added

211298 1 3 Menu changes Blanking, Statusand logging Section 4 forSoftware V1.4.2 onwards


Operator’s Manual

Snell&

Wilcox

MDD500S

NTSC

Decoder

Operator’sManual

Snell & WilcoxMDD500S

NTSC Decoder


SECTION 1

Introduction

DESCRIPTION

The MDD500S has an adaptive multi-dimensional filterwhich can work across 5 fields.

Analogue inputs and digital outputs are provided.

The unit is contained in a single 1U rack case, meetingcurrent EMC regulations (BS EN 50081-1 for emissionand BS EN 50082-1 for immunity)

Control is via card edge switches or by using a KUDOSactive front panel (Shoebox) via the RollCall remotecontrol system.

MDD500S


SECTION 1

Introduction

FEATURES

Analogue to Serial Digital

Four Rec656 4:2:2 outputs

Synchronise frame operation

Tolerant to non-broadcast quality analogue inputs

Output may be locked to input

Fully supports EDH on output

High quality analogue and Digital filtering

RollCall control protocol with built-in gateway to RS422

Built-in test pattern generator

All 10-bit digital design


SECTION 1

Introduction

OPERATIONAL BLOCK DIAGRAM

MDD500S


INPUT SIGNALS

Composite Two inputs (A and B ) of Composite video at 1V p-p level when terminated in75 Ohms via loop-through BNC connectors

Reference Standard Video or black burst via loop-through BNC connectors for 75 Ohms.

OUTPUT SIGNALS

Serial Digital Four isolated serial digital outputs are available via BNC connectors forconnection to 75 Ohms systems.Output level 800 mV ±10%Output return loss better than -15 dB @ 270 MHz

Note that to ensure reliable transmission of serial digital signals without causingunacceptable levels of radiated emissions, only high quality 75 Ohm co-axialcable should be used. The cable must also be terminated with a precision 75 Ohm load.

EDH A single BNC connector providing error status reporting in accordance withSMPTE 269M. This is an Opto-coupled output, open for OK, closed for fault orpower fail.

SIGNAL PATH

Analogue Input Two composite inputs via passive loop-through BNC connectors for 75 Ohms.Nominal input level 1 V p-p.Return loss better than -35 dB to 5.5 MHz.

Pre-Filter ResponsePassband flatness better than ±0.1 dB to 5.75 MHzGroup delay variation less than 5 ns to 5.75 MHzRejection greater than 40 dB at 8 MHz

Analogue to Digital Analogue-to-digital conversion is performed using a 10-bit converter

Reference Input One input via passive loop-through BNC connectors for 75 Ohms. Nominal inputlevel 1 V p-p composite video, black burst at standard level or mixed syncs at 2 V p-p.Return loss better than -35 dB to 5.75 MHz.

RollCall Input One input via BNC connector for 75 Ohms. For connection to RollCall network

Rate Conversion All digital rate conversion is performed operating on a data path with a minimumof 10 bits resolution. The rate conversion method used is the subject of a Snell & Wilcox patent.

SECTION 2

Specifications


Synchroniser A full 10-bit digital frame synchroniser is incorporated into the main signalprocessing path.The output of the unit may be locked to the input video, the reference video orallowed to free run.

Control Limited control functions are available from card edge switches with modes ofoperation indicated by LED’s.

Full control using RollCall which can control the unit from a P.C. or a KUDOSActive remote front panel (Shoebox).

Test The main board has a sophisticated built-in test mode where the integrity of alldata paths and all memory locations are tested and status reported viaRollCall and a failed unit can be analysed using a P.C.

Digital Output Four serial digital outputs are provided via BNC connectors for 75 Ohms.

The serial component digital output is in accordance with SMPTE 259M-CReturn loss is better than -15 dB to 270 MHz.

EDH Output An output providing EDH information via available via a BNC connector and isin accordance with SMPTE 269M-C

Power Requirements 90 V to 250 V 50/60Hz A.C. IEC Socket Fused 1A(T)(Note that EN60950 clause 1.4.5 requires safe operation taking into accounta tolerance of +6% to -10% on this voltage range)Power Consumption 50VA maximum

Temperature Range 0 to 40°C operating (Unit incorporates a cooling fan)

Mechanical The unit is ruggedly constructed in a 19" 1U steel rack mount case.Dimensions 483mm x 457mm x 45mm (W, D, H.)Weight 7 kg

SECTION 2

Specifications


POWER CONNECTIONS

This is the IEC320 mains power connector suitable fora standard IEC type power cable and contains a 1A(T)fuse. If a fused type plug is fitted to the cable a fuse of7A (F) rating should be installed.

POWER ON/OFF SWITCH

The power ON/OFF switch is located behind thedrop-down front panel in the left hand corner.

SECTION 3

Installation


COMMUNICATIONS CONNECTIONS

CONTROL RS422

This 9 pin ‘D’ connector on the rear panel is the RS422control connector. Connections are as follows:

Pin 1 GroundPin 2 Transmit TXAPin 3 Receive RXBPin 4 Common (Transmit Signal)Pin 5 GroundPin 6 Common (Receive Signal)Pin 7 Transmit TXBPin 8 Receive RXAPin 9 Ground

REMOTE PANEL

This 9-pin ‘D’ connector allows an interconnection tobe made to a remote or other panels in a multiple-unitsystem.

ROLLCALL

This single BNC connector allows the unit to beconnected to the RollCall network communicationssystem.For more details of the RollCall system see Section 1

SECTION 3

Installation


INPUT CONNECTIONS

COMPOSITE INPUT

These are the two composite (cvbs) video inputs to theunit via loop-through BNC connectors for 75 Ohms. If the loop-through facility is not used a BNC 75 Ohmterminating plug should be fitted on the unusedconnector. Nominal input level is 1 V p-p.

Either A or B input may be selected using the frontpanel controls.

REFERENCE

The unit and its output signals may be reference lockedto an external analogue (black burst or compositevideo) signal using the ‘REFERENCE’ connector. This input expects a standard level signal vialoop-through BNC connectors for 75 Ohms. If theloop-through facility is not used a BNC 75 Ohmterminating plug should be fitted on the unusedconnector.

Note that any reference signal supplied must becompatible with the operating standard of the unit.

SERIAL

These connectors have no function on this unit andconnections should not be made to them.

COMPOSITE PARALLEL INPUT

This connector has no function on this unit andconnections should not be made to it.

SECTION 3

Installation


OUTPUT CONNECTIONS

COMPONENT and SYNC OUTPUTS

These connectors have no function on this unit andconnections should not be made to them.

SERIAL OUTPUTS

There are four outputs of Serial digital video availablefrom the unit via these BNC connectors for 75 Ohms.

EDH

This BNC connector provides an output for error statusreporting in accordance with SMPTE 269M.This is an opto-coupled output, open for OK, closed forfault or power fail.

For more details refer to the Appendix.

SECTION 3

Installation


OPERATION FROM A KUDOS ACTIVE FRONTPANEL (SHOEBOX)

All operational parameters and selections are madeusing a system of menus displayed in two LCDwindows.

Menus are selected by push buttons and further menuselections made by rotating a spinwheel and pressinga push button.

The spinwheel also allows continuously variableparameters, e.g. Gain, to be adjusted and the settingto be seen in the LCD window.

Various specific operations may be achieved byoperating dedicated push buttons.

The Menu System(See ‘MDD500S Menu System’ drawing on previouspage)

The system may be considered structured as a set ofmenus and sub-menus which are displayed in thecentral LCD window. The left hand LCD window willdisplay the current input/output standard selections ofthe unit and information messages. The DISPLAYbuttons allows the information displayed to togglebetween the modules current setup and more detaileddata including software version etc.

The highest level menu is called the Main Menu andcontains the names of the lower-level menus whichmay be scrolled through using the spinwheel.

The sub-menu may be then be selected by pressingthe push button adjacent to the arrowhead in the textline of the menu name.

This sub-menu will then be displayed in the windowand will have the option of selecting another sub-menuin the same manner, or allow the adjustment of aparticular parameter.Parameters enabled will appear as highlighted reversetext (white text on a black background)

Note that the spinwheel will be operative when the LEDlabelled SCROLL is illuminated, indicating that a menuwith more than four text lines is being displayed.Operating the spinwheel then allows the other textlines to be displayed.

SECTION 4

Operation

MDD500S211298 Version 1 Issue 2 SNELL & WILCOX For software V1.4.2 onwards 4.1

THE LCD DISPLAY WINDOWS

Control Window

The control window displays all Selection Menus andsub-menus. An example is shown opposite.

The selection is made by pressing the button adjacentto the required item and will become highlighted(reverse text) when active.

Information Window

The left hand window has text indicating currentselections and various messages.

The DISPLAY SELECT buttons allow the InformationWindow to display two different sets of information:

1 Identity Codes

The first line will show the unit name e.g. MDD500S

The second line will show the unit address code andthe RV (RollCall Version)

The third line will show the unit identity (RollCall) forthat unit as three sets of digits separated by a dot.

1st set =The version of the control unit 2nd set=Variant of software version3rd set =Control compatibility version number

The fourth line will display system save codes

Input...Setup...Genlock...

Output...TPG...

Status...

MDD500S (Unit Name) Ref:OK Inp:OK NTSC Ref:Pic This line may be blank or show: Presetting or Ref Locked to Input

SECTION 4

Operation


2 Current selections and conditions

First Line: MDD500-S (Unit Name)

This line shows the name of the unit, in this case thedefault name of MDD500-S. If the name has beenchnged in the Unit Name Menu the new name willappear here.

Second line: Ref:OK Inp:OK NTSC

This shows that the reference input has a signal, thesignal input has a valid signal and the unit will bedecoding in the PAL standard.

Third Line: Ref: Pic

This line shows that the reference is derived fromthe input picture source.

Fourth Line:

This line may be blank or show one of the following:

Presetting

Presetting indicates that the unit has been asked toreturn all settings to their default values and the unit isperforming this operation.

or SAVING 1 (....8)or RECALLING 0 (....8)

This indicates that the unit is Saving or Recalling toa particular location.

Note that the default settings are saved in location 0.New settings cannot be saved in location 0 but settingsin location 0 may be recalled.

if the line shows: SAVE 0

this indicates that the recall function is not enabled.

MDD500S (Unit Name) Ref:OK Inp:OK NTSC Ref:Pic This line may be blank or show: Presetting or Ref Locked to VHS

SECTION 4

Operation


USING THE DEDICATED PUSH BUTTONS

Home

Pressing the Home button will display the Main Menuin the control window from any position in the menuhierarchy.

Previous

The Previous button allows a return to the last menuthat was changed. Up to 20 changed menus may beretraced using this function.

Return

The Return button will allow access to the previouslyselected upper-level menu.

Scroll & Adjust LED’s

Note that the spinwheel will only be operative when theScroll green LED is illuminated, indicating that a menuwith more than four text lines is being displayed.Operating the spinwheel then allows the other textlines to be displayed.

When illuminated the Adjust LED indicates thatparameters of the selected module may be adjusted.

Note that if the unit loses power at any time all settings will berestored to the values at power-down when power is restored.

SECTION 4

Operation


MAIN MENU DETAILS

The main menu is located in the control displaywindow and is the highest level menu from whichvarious sub-menus may be selected using theadjacent push buttons.

Selections available from this menu are as follows:

Input

This selection reveals the Input Menu and allows oneof three types of input signals to be activated.

Ana_A Selects Composite input A

Ana_B Selects Composite input B

TPG Selects the the pattern enabled via the TPG item in the main menu (see TPG below)

Output

This selection reveals the Output Menu and allowsvarious options to be applied to the output signals.

Signal Loss From a sub-menu the output can befrozen or cut to black when the inputsignal is lost

Clipper On Applies the clipping function to theoutput signals

Output EDH On Adds EDH data to the output signal

Setup

This selection reveals the Setup Menu which allowsvarious signal parameters to be adjusted using thespinwheel. Numerical parameters are shown in thedisplay window and a preset function returns the valueto the default setting.

Gain This selection allows adjustment ofoverall video gain. Adjustment is in steps of 1% andpreset value is 100%.

Chroma Gain This selection allows adjustment ofoverall Chroma gain. Adjustment is in steps of 1% andpreset value is 100%.

Hue This selection allows adjustment ofthe hue or colour tint of the picture.Adjustment range is from -180° to+179° in steps of 1° and preset valueis 0°.

Input Set-Up This selection reveals a sub-menuthat allows the unit to correctlyprocess input signals that have orhave not, a black level set-up.Note: NTSC signals originated in theUSA normally have set-up; NTSCsignals originating in Japan normallydo not have set-up.

Picture Pos The horizontal picture position (withinblanking) may be adjusted using thisfunction. Adjustment is in steps of 4 ns andpreset value is 0 ns.

SECTION 4

Operation


Blanking

This selection reveals the Blanking sub-menu thatallows picture blanking to be adjusted.

Using both the Front Porch and Back Porch controlsallows the blanking position and width to be adjustedby setting independant start and finish points.

It should be noted that these controls will not allowblanking to exceed the limits for valid D1 signals.

Control Functions

Front Porch The width of the front porch may beadjusted in 148 ns steps. Preset value is 1333 ns.

Back Porch The width of the back porch may beadjusted in 148 ns steps. Preset value is 4741 ns.

Blank/Pass All Vertical

These functions allow all vertical interval lines to beeither blanked or passed through.

Field 1, Field 2

This reveals another sub-menu for selecting particularlines in the vertical interval of field 1 or field 2 that maybe blanked or unblanked.

Field 1

Any lines in the range 10 to 20 may be selected to beblanked (text highlighted) or unblanked (text normal)

Field 2

Any of the lines in the range 272 to 282 may beselected to be blanked or unblanked.

Analogue

Using this function adjustments may be made to theanalogue signal that is fed to the A to D converter tonormalise the signal ensuring correct A to Dconversion.

Fast Lock This enables the time constant in theanalogue PLL to be changed. The default setting is ON (texthighlighted) which selects a shorttime constant. Setting to OFF selectsa long time constant; this settingshould only be used when theanalogue input signal is guaranteedto stable and free of any timebaseerrors etc.

Analog Gain

This allows the gain, and hence the amplitude of theanalogue signal to be adjusted. The gain may be adjusted in steps of 1 unit.

Factory Defaults

This function allows all control settings to be reset tofactory default values.

SECTION 4

Operation


TPG

This selection reveals the TPG Menu and allows eitherpatterns or ITS to be applied to the outputs.

Selecting ITS allows ITS to be added (text highlighted)or removed from the output signals.

When the TPG selection is made the pattern that iscurrently selected (see below) will appear at the output.

Selecting Patterns reveals a list of patterns thatmay be enabled for display:

BlackNTC7-1FCC-MBSTFCC-COMPNTC7-2CB100SMPTESDIVALIDRMPP&B2T

Genlock

This selection reveals the Genlock Menu which allowsthe reference input to be selected and phasingadjustments to be made.

Reference

This selection reveals the Reference sub-menu thatallows a particular reference signal to be selected. Theoutput signals will then be locked to that signal.

Reference Input

This selection will lock the unit to thesignal connected to the rear panelreference input.

Picture Input This selection will lock the unit to thepicture input selected from the InputMenu.

Freerun

When this selection is made the output signals will belocked to the internal SPG of the unit.

Horizontal/Vertical

These selections allow the phasing between thereference signal and the output signal to be adjusted.

Horizontal This selection allows the horizontalphasing to be adjusted in steps of37 ns.Preset value is 0 ns.

Vertical

This selection allows the vertical phasing to beadjusted by ±262 lines in steps of 1 line.

Preset value is 0.

Status

This selection reveals the Status Menu and allows thefollowing modes to be enabled:

Unit Name

The unit name of MD500S will be displayed in thewindow and the text may be edited as follows:

When the item is selected, the first character will bein reversed flashing text; this character can then bechanged by rotating the spinwheel. When the desiredcharacter is found the button to the left or right of thetext line should be pressed and the next text characterwill be highlighted and available for changing. Thebuttons to the left and right of the text line may be usedto select other characters.

To save the new text, press the OK button. It shouldbe noted that this is the only way to save the new textas any other button function will return to another menuwithout modifying the original text.

Note that to remove a character and leave a clearspace in the text line the Clear function (above Preset)should be used.

SECTION 4

Operation


Logging

If a logging device is attached to the RollCall network,certain information may be made available for logging.

Selections are:

Log Inputs Logs input source selection

Log Ref Logs reference source selection

Log Std Logs Operating standard

Log Faults Logs fault data

Server

This item allows logging server communicationfunctions to be setup and naming of the server.

Logging Off Logs off the server

Logging To Server Logs onto a server

Logging Any Server Logs onto any server

The item ‘Server Name’ reveals a menu that allowsthe server name to be changed.

RollTrack

This function allows the value of the delay timeproduced by this module to be sent, via the RollCallnetwork, to audio delay units connected on the samenetwork. This enables compatible audio delay units toproduce an audio delay dependent on this and othersimilar units. The audio delay unit will dynamicallyfollow or track the received delay-time informationallowing processed video signals to be timed correctlywith audio signals. This automatic tracking system viathe RollCall network is called RollTrack.

Setting the destination address

The destination for the delay information is set by thenetwork code address as follows:

Selecting RollTrack Event provides numerical displaythat allows up to 10 (0 to 9) audio delays to be selected(using the spinwheel) as a destination.

Selecting RollTrack Unit allows the code to be set up(using the spinwheel) to edit the text.

The full network address has six sets of numbers

The first set (0000) is the network segment codenumber

(The spinwheel selects the character; the clear buttonremoves a character and leaves a clear space, thePreset function sets the text line to all zeros, and theOK function accepts the network address)

The second set is the number identifying the Unitaddress (enclosure/mainframe)

The third set is the Port (slot number) in the unit.

The fourth set is the (Virtual) channel number.

Note that only channel numbers 14, 15, 16 & 17 shouldbe used for audio delay cards.

The fifth set is the Unit Identification.

The sixth set

In the event of a failure (loss of input, loss of poweretc.) an instruction may be sent to a remote unit toswitch the transmissiom output to a caption/picturesuch as "Normal service wil be resumed as soonas possible"

The sixth set of 2 digits can be used to issue thisinstruction.

Once a destination address for a unit has been set theOK function will save the data.

SECTION 4

Operation


RollTrack Mode

This sub-menu allows the unit to provide the followinginformation to the connected RollTrack Unit:

Not Used

No information will be sent to the RollTrack unit

Delay

The MDD500S delay time will be sent to the RollTrackunit

Input Loss

If the input signal to the MDD500S is lost thisinformation will be sent to the RollTrack unit so thatappropriate action may be taken.

Input Restore

When the input signal to the MDD500S is restored thisinformation will be sent to the RollTrack unit so thatappropriate action may be taken.

The sixth set of digits (00) will indicate these states.

Version

This reveals the software version installed. Press OKto return to previous menu.

Serial No

This reveals the serial number of the card. Press OKto return to previous menu.

Save Setup

The MDD500S contains a non-volatile memory thatcan store all settings in 8 memory locations.

Selecting this function will display the Save Setupmenu. A memory location may then be selected bypressing the button adjacent to the desired locationand the settings will be saved in that location.

Recall Setup

Selecting this function will reveal the Recall menu;press the push button adjacent to the desired memorylocation number. The settings saved at that locationwill then be loaded into the unit.

Factory Defaults

This function allows all control settings to be reset tofactory default values.

Reboot

This function allows the unit to reboot and all power-upsettings to be enabled. This is an easier method thanswitching the mains power on and off

SECTION 4

Operation


CARD EDGE CONTROLS

Adjustment of the settings for the MDD500S isavailable either via card edge controls or via theRollCall remote control system.

Front Panel Connector

The front panel is connected to the card via this 9-pinconnector.

SW1 and SW2

These push-button switches allow parameters (asselected by SW3) to be adjusted.

SW1 increases values and SW2 decreases values.

To return to default values both buttons should bepressed simultaneously.

SW3 Position 0

The input gain may be adjusted in this position.Adjustment is in steps of 1% and preset value is 100%.

SW3 Position 1

The chrominance gain may be adjusted in thisposition. Adjustment is in steps of 1% and preset valueis 100%.

SW3 Position 2

This position has no function

SW3 Position 3

This posit ion al lows the front porch to beadjusted.The width of the front porch may be adjustedin 148 ns steps. Preset value is 1333 ns.

SW3 Position 4

This position allows the back porch to be adjusted.The width of the back porch may be adjusted in 148 nssteps. Preset value is 4741 ns

SECTION 4

Operation


SW3 Position 5


SW3 Position 6

In this position the vertical phasing or offset betweenthe reference signal and the output signal may beadjusted. Adjustment range is ±262 lines in steps of 1line. Preset value is 0.

SW3 Position 7

In this position the horizontal phasing or offsetbetween the reference signal and the output signalmay be adjusted. Adjustment is in steps of 37 ns.Preset value is 0 ns.

SW3 Position 8 Note that this position is only operative when TSG isselected to output (SW5 position 3 set to ON)

This position allows a test pattern to be selectedfrom the list of patterns.

SW3 Position 9

This position allows adjustment of the hue or colourtint of the picture. Adjustment range is from -180° to +179° in steps of 1°and preset value is 0°

SW3 Position A

The horizontal picture position (within blanking) maybe adjusted from this position. Adjustment is in steps of 4 ns and preset value is 0 ns.

SW3 Positions B to E

These positions are reserved

SW3 Position F

In this position operating the push buttons will set allcontrols to their factory default values.

SECTION 4

Operation


LED INDICATORS

D1 (SOIRX)

This indicator will flash when RS422 data is beingreceived from the remote control port.

D2 (SIOTX)

This indicator will flash when RS422 data is beingtransmitted to the remote control port.

D3 (DAT2)

This indicator will flash when network data is beingreceived from the RollCall remote control port.

D4 (DAT1)

This indicator will flash when network data is beingtransmitted to the RollCall remote control port.

D5, D6, D7 & D8

These indicate that the -6 V, +5 V, +6 V and -5 V powersupplies are present.

D9 (INPUT)

This indicator is non-operational

D10 (REF)


D11 (ERROR)


D12 (EDH)

This indicator will flash when EDH errors are detected

D13 (SCL) and D14 (SDA)

These are internal status indicators

D15 (ILF)

This indicator will flash if an internal load fault isdetected; continious illumination indicates a faulty unit.

SECTION 4

Operation


SW5 and SW6

The two 8-way DIL switches allow various functions tobe set when an active front panel is not fitted. Note thatwhen an active front panel is fitted most switch settingswill be reflected by the front panel menu display orindicators.

SWITCH SW5 (UP = OFF, DOWN = ON)

Position 1


Position 2 Input Type Select

Analogue A is selected in the UP (Off) position

Analogue B is selected in the DOWN (On) position

Position 3 Normal/Pattern Select

In the OFF position the unit will process the inputsignal; in the ON position a test pattern will bedisplayed. The type of test pattern may be selected from the frontpanel menu or by setting SW3 to position 8.

Position 4 VITS Operation

In the OFF position the will be no VITS insertion; in theON position VITS signals will be inserted.

Position 5 Select Output Signal Type


Position 6 Test

In the OFF position the unit operates normally; in theON position a test mode is enabled.

Positions 7 This position has no function.

Position 8

This position selects the settings read at power-up. Inthe ON position the stored settings are read andimplemented at power-up; in the OFF position theswitch/default settings are read and implemented atpower-up

SECTION 4

Operation


SW6 (UP = OFF, DOWN = ON)

Position 1 Input Signal Set-Up

This switch should be set to the OFF position if theinput signal has set-up (e.g. NTSC USA); it should beset to the ON position if the input signal does not haveset-up (e.g. NTSC Japan)

Position 2

This poition has no function

Position 3

This poition has no function

Position 4 Vertical Blanking

In the OFF position all lines during vertical blanking areblanked; in the ON position all lines are passedthrough.

Positions 5 & 6

These two positions allow the reference source to beselected. ( 0=OFF, 1=ON and X=Don’t Care)

ReferenceSource Position 5 Position 6

Freerun 0 0

Picture Input 0 1

Reference Input 1 X

Position 7

Setting this to ON applies the clipping function to theoutput signal. Clipping levels are at peak white, blackand 100% chrominance.

Position 8 has no function

SW7 and SW8

These two switches enable the RollCall networkaddress to be set. SW7 sets the MSB (most significantbit) and SW8 sets the LSB (least significant bit)

Both of these switches are used to define the UnitAddress code for the equipment. They are only readat power-up.

Position ‘0’ on SW7 will disable the RollCall functionon the unit; all other positions on these switches maybe used to set the Unit Address code in Hex. (SW7 inthe range 1 to f, SW8 in the range 0 to f)

If a code is already in use the RollCall receive andtransmit LED’s will flash alternately at a 1 second rate.The unit must then be powered-down, the code resetand the unit powered-up again.

Note that in a RollCallsegment, all units must havedifferent unit address codes.

SECTION 4

Operation


PROPOSED SMPTE STANDARD FOR FAULT REPORTING SMPTE269MIN TELEVISION SYSTEMS

Copyright, Society of Motion Picture and Television Engineers. Reprinted by permission.

1 SCOPE

This standard describes a simple interface over which television equipment can report the occurrence of internalfailures and faults in incoming signals. It is intended for use in all television equipment, from the simplest activedevice to the most complex.

The interface consists of an isolated closure which can assume one of three states: open, closed or pulsing.These respectively signal that the reporting device is okay, has detected an internal fault, or is detecting incomingsignal faults.

Fault occurrence data may be collected from equipment complying with this standard by several means, rangingfrom simple "follow the lights to the trouble" summary alarm schemes to computerised logging systems. While full specification of such systems is beyond the scope of this standard, a general outline of one possibleimplementation is given in annex A.

2 NORMATIVE REFERENCE

The following standard contains provisions which, through reference in this text, constitute provisions of thisstandard. At the time of publication, the edition indicated was valid. All standards are subject to revision, andparties to agreements based on this standard are encouraged to investigate the possibility of applying the mostrecent edition of the standard indicated below.

IEC 169-8 (1978), R.F. Coaxial Connectors with Inner Diameter of Outer Conductor 6.5 mm (0.256 in) withBayonet Lock - Characteristic Impedance 50 Ohms (Type BNC)

3 FAULT STATES

3.1 A reporting device may be one of three states:

3.1.1 Normal operation

The device is currently not detecting any internal failures and is receiving power.

3.1.2 Internal failure

The device is currently detecting an internal failure or has lost power.

3.1.3 Incoming signal fault

The device is not detecting any internal failures, but is currently detecting fault in incoming signal(s).

SECTION 5

Appendix 1


4 INTERFACE DEFINITION

4.1 Interface

The interface consists of two-wire connection from an electrically-isolated output closure in the reporting device.The interface reports faults only at the times that they are detected. The closure may be in one of three states:

4.1.1 Open

An open output signifies that the reporting device is operating correctly with valid input(s).

4.1.2 Closed

A closed output signifies that the reporting device has detected an internal fault or has lost power. The closurelast s only for the duration of the fault.

4.1.3 Pulsing

A pulsing output signifies that the reporting device has detected errors in the signal(s) it is receiving. The pulsinglasts only for the duration of the errored field(s).

4.2 Pulsing

Pulsing is defined as a closed pulse from 1-2 ms long occurring once per field.

5 ELECTRICAL CHARACTERISTICS

5.1 Output

The output of the reporting device is a closure, electrically isolated from the rest of the device. The isolatingmechanism shall withstand a common-mode potential of 60 V peak at frequencies from DC to 400 Hz. The shellof the connector may be bypassed to the chassis by a small-value capacitor, if needed, to limit rf radiation.

5.2 Output closure

The output closure must be in the closed state when power is removed from the device (see annex A).

5.3 Open state characteristics

When in the open state, the leakage across the closure must be less than 100 uA at any voltage from 0V to 5 VDC. The closure shall be able to withstand 24 V DC in the open state without damage.

5.4 Closed-state characteristics

In the closed state, the maximum voltage drop across the closure shall not exceed 2V at 20mA. The sensingdevice shall not supply more than 20mA of current to the reporting device.

SECTION 5

Appendix 1


6 CONNECTOR

The chassis connector used shall be a female BNC type, as defined in IEC 169-8. The center contact shall beconnected to the positive side of the sensing mechanism.

Note - Only the mechanical dimensions are specified. Both 50- and 75-ohm connectors are available which meetthese requirements.

ANNEX A (informative)

Possible implementation of a reporting scheme

There are many ways to implement a fault data collection and reporting system using the interface specified inthis standard. The implementation described here is one of the simplest. It is a hierarchical system and isdesigned to lead a technician to the faulty device by means of visual and audible signals. No provision is madefor automated logging of faults; however, such logging is not precluded.

The scheme works as follows: All fault reporting outputs in each rack or frame are connected in parallel to a summary alarm repeater, whichconsists of a power supply, an optoisolator circuit, and an alarm lamp and driver, as shown in figure A 1.

Figure A.1.-Reporting Scheme Implementation

The outputs of the repeaters are connected in parallel to an identical repeater at the end of the rack row. Thesein turn are connected to another repeater at the entrance to the rack area, and so forth, until all alarms are summedat a staffed monitoring point. Audible alarms may also be used where desired.

When an alarm occurs, the technician simply follows the lights to the correct room, rack area, rack row, rack,frame, and faulty module, and either resets or replaces it as required. Note that this scheme relies on the device originally reporting the fault to provide visual indication of the faultcondition.Schemes of this type have been used by telephone companies for years. They are simple to design andinexpensive to implement. Although they do not provide detailed fault logging, as noted, they greatly facilitatelocating failures.

OUTPUT

ALARMLAMP

INPUTS

1

2

3

N

+V

SECTION 5

Appendix 1


ANNEX B (informative)

Output loss detection

The requirement to signal loss of power as a fault implies that the output must revert to the closed state whenthe power is off. Figure B.1 shows one possible implementation of such a circuit.

Figure B.1.-Output Interface Implementation

ANNEX C (informative)

Output loss detection

Normal analog video system design practice is to have all outputs of a device driven by the same activecomponents, with the different outputs isolated from each other by buildout resistors. With this arrangement,one can determine the condition of all outputs of the device with a high degree of confidence by monitoring onlyone of them.

In digital television systems, the bandwidths involved make commonly-driven resistively-isolated outputsimpractical. Instead, each output is typically driven by a separate active stage, and noise considerationsfrequently dictate that half the output drivers are fed from the Q output of the previous stage, while the other halfare fed by the not-Q output.

Given this topology, monitoring one output of a device does not indicate the health of the other outputs to thedegree of confidence required. The only way to provide this level of confidence is for the device itself to monitorall outputs internally, signalling a fault if any of them fails while the device is receiving or generating a valid input.

ANNEX D (informative)

Bibliography

SMPTE 259M, Television--10-bit 4:2:2 Component and 4 fsc NTSC Composite Digital Signals -- Serial DigitalInterface SMPTE RP165, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfacesfor Television.

OUTPUT

FAULT

+V

SECTION 5

Appendix 1


SECTION 5

Appendix 2

PROPOSED SMPTE RECOMMENDED PRACTICE RP165

Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces forTelevision

Copyright, Society of Motion Picture and Television Engineers. Reprinted by permission.

1 SCOPE

1.1

This practice describes the generation of error detection checkwords and related status flags to be used optionallyin conjunction with the serial digital interface for system M (525/59.94) and systems B, G, H and I (625/50) digitaltelevision equipment operating with either 4:2:2 component digital signals of 4fsc composite digital signals.Although it is preferred that this error checking method be used in all serial transmitters and receivers, it isrecognised that some equipment must minimise complexity.

NOTE - Line numbers in tables 2 and 3 for 625/50 systems are tentative, and subject to change pending decisionson vertical interval switching for serial signals.

1.2

Two checkwords are defined: one based on a field of active picture samples and the other on a full field of samples.This two-word approach provides continuing error detection for the active picture when the digital signal haspassed through processing equipment that has changed data outside the active picture area withoutre-calculating the full-field checkword.

1.3

Three sets of flags are provided to feed forward information regarding detected errors to help facilitate identificationof faulty equipment. One set of flags is associated with each of the two field related checkwords. A third set offlags is used to provide similar information based on evaluating all of the ancillary data checksums within a field.

1.4

The checkwords and flags are combined in an error data packet which is included as ancillary data i the serialdigital signal. At the receiver, a recalculation of checkwords may be compared to the error data packet informationto determine if a transmission error occurred.


2 NORMATIVE REFERENCES

The following standards contain provisions which, through reference in this text, constitute provisions of thispractice. At the time of publication, the editions indicated were valid. All standards re subject to revision, andparties to agreements based on this practice are encouraged to investigate the possibility of applying the mostrecent edition of the standards indicated below:

ANSI/SMPTE 125M-1992, Television - Component Video Signal 4:2:2 - Bit-Parallel Digital Interface

SMPTE 244M, Television - System M/NTSC Composite Video Signals - Bit-Parallel Digital Interface

SMPTE 259m, Television - 10-Bit 4:2:2 Component and 4fsc NTSC Composite Digital Signals - Serial DigitalInterface

SMPTE RP 168, Definition Of Vertical Interval Switching Point for Synchronous Video Switching

ICE 60B(Sec)200, Helical-Scan Digital Composite Video Cassette Recording Using 19mm Magnetic Tape(Format D-2) (NTSC, PAL), Section Five, Video Interface

EBU Tech 3267- E, Parallel Interface for 625-Line Digital Video Signals

SECTION 5

Appendix 2


3 LOCATION OF CHECKWORDS, FLAGS, AND INCLUDED SAMPLES

3.1 Location of Checkwords and Flags

Digital data packets containing the calculated checkwords and error information flags are located in the ancillarydata area of the vertical interval in a manner to complement the recommended practice of source switching.Locations are shown graphically in figure 1 and specified in table 1 for 525/59.94 systems and table 2 for 625/50systems. For composite signals, the error data packet is located in the ancillary data area of the first horizontalpulse occurring in the line prior to the recommended vertical interval switching point of each field. For componentsignals, the error data packet is located just prior to SAV (start of video) in the same lines. To enable properoperation of equipment implementing this practice, signal switching must take place in the vertical interval andconform to SMPTE RP 168.

Vertical Blanking Interval

(Line n with last full-field sample) eef

(Line n+1 with error data packet)

(Line n+2 used for switching)

(Line n+3 not included in full-field sample)

(Line n+4 first full-field sample)

aaa (Line with first active picture sample)

Active Picture Area

(see 3.2 for definition)

(Line with last active picture sample) eea

H-interval

Samples not contained in

active picture checkword

NOTES

1 See Tables 1 and 2 for exact sample locations in both fields.

2 ccc = location of checkwords and status flags

3 fff = first sample included in the full-field checkword

4 aaa = first sample included in the full-field checkword

5 eea = last sample included in the active picture checkword.

6 eef = last sample included in the full-field checkword

Figure 1-Location of Checkwords and Included Samples

ccc

fff

SECTION 5

Appendix 2


Data Item

Error checking data locations

Line 9 fields 1 & 111, Line 272,fields 11 &1V

Ancillary data header, word 1 - component



Auxiliary data flag - composite

Data ID

Block number

Data Count

Active picture data word 0



Full-field data word 0



Ancillary data error flags

Active picture error flags

Full-field error flags

Reserved words (7 total)

Checksum for this ancillary data block

Component

1689 (000h)

1690 (3FFh)

1691 (3FFh

1692 (1F4h)

1693 (200h)

1694 (110h)

1695

1696

1697

1698

1699

1700

1701

1702

1703

1704-1710(200h)

1711

Composite

795 (3FCh)

796 (1F4h)

797 (200h)

798 (110h)

799

800

801

802

803

804

805

806

807

808-814 (200h)

815

Table 1-Location of 525/59.94 System Checkwords

SECTION 5

Appendix 2


Table 2 - Location of 625/50 System Checkwords

Data item

Error checking data locations:

Line (5) fields 1 & 111, Line (318), fields 11&1V




Auxiliary data flag - composite

Data ID

Block number

Data count




Full field data word 0



Ancillary data error flags

Active picture error flag

Full field error flags

Reserved words (7 total)

Checksum for this ancillary data block

Composite

972 (3FCh)

973 (1F4h)

974 (200h)

975 (110h)

976

977

978

979

980

981

982

983

984

985-991 (200h)

992

Component

Cr425(3FFh)

Y851 (3FFh)

Cb 426 (1F4h)

Y852 (200h)

Cr426 (110h)

Y853

Cb427

Y854

Cr427

Y855

Cb428

Y856

Cr428

Y857

Cb429-Cr430

(200h)

Y861

NOTES

1 Values in the tables are word numbers for the appropriate standard.

2 Values in parentheses are sample values.

3 625/50 line numbers (in brackets) are tentative.

SECTION 5

Appendix 2


3.2 Samples included in checkword calculations

Starting and ending samples for active picture and full-field checkword calculations are shown in table 3. For theactive picture checkword, only the samples in the active picture area of each line are included in the calculation.As used in this practice, the active picture includes only those lines which, in composite systems, are full lines(that is, half lines are not included.) Full-field checkwords include all the samples in all lines except the linecontaining the error data packet and the two following lines. The line following the error data packet is normallyused for vertical interval switching and the next line is excluded to ensure that word framing and TRS propagationare restored after a switch.

NOTE - For the purpose of performing the CRC calculations in PAL composite systems, sample 967 is definedas the TRS sample with value 3FFh. This is consistent with IEC 60b (Sec)200, but must be clearly defined forCRC calculations in a case a nonstandard horizontal interval is encountered.

4 DEFINITION OF DATA WORDS

4.1 Checkword values

Each checkword value consists of 16 bits of data calculated using the CRC-CCITT polynomial generationmethod. The equation and a conceptual logic diagram are shown below:

Checkword (16 Bit) = X16 + X12 + X5 + 1

4.2 Ancillary Date Housekeeping, Checkwords, and Flags

Definitions of each ancillary data word specified by this practice are shown in table 4. To provide compatibilitywith 8-bit equipment, 0s are used in the two least significant bits of all words in the data packet. Bit b7 (V) inpicture/field data word 3 is a 1 if a valid CRC has been calculated. This allows implementations which calculateonly one or the other of the checkwords. A P in b8 provides even parity for b7 through b0; that is, the total numberof 1s in b8 through b0 is an even number. The most significant bit, b9, is the logical inverse of b8. A checksumis the last word in the error data packet as required by the ancillary data formatting for the serial digital interface.

The checksum word is used to determine the validity of the included words. The checksum word shall consist of9 bits and the sum of the 9 least significant bits (b8 through b0) of all words including Data ID through reservedwords. Preset to all zero at the start of each calculation and ignore the carry.

15 14 13 12 11 + +10 9 8 7 6 5 4 3 2 1 0 +

Serial Data

SECTION 5

Appendix 2


4.3 Error Flags

All error flags indicate only the status of the previous field; that is, each flag is set or cleared on a field-by-fieldbasis. A logical 1 is the set state and a logical 0 is the unset state. The flags are defined as follows:

edh - error detected here: Signifies that a serial transmission data error was been detected. In the case of ancillary data, this means thatone or more ANC data blocks did not match its checksum.

eda - error detected already: Signifies that a serial transmission data error has been detected somewhere upstream. If device B receives asignal from device A and Device A has set the edh flag, when B retransmits the data to device C, the eda flagwill be set and the edg flag will be unset if there is no further error in the data.

idh - internal error detected here: Signifies that a hardware error unrelated to serial transmission has been detected within a device. This is providedspecifically for devices which have internal data error checking facilities, as an error reporting mechanism.

ida - internal error detected already: Signifies that an idh flag was received and there was a hardware device failure somewhere upstream.

ues - unknown error status: Signifies that a serial signal was received from equipment not supporting this error-detection mechanism.

Data Item

525.59.94 systems

First full-field sample, lines 12 and 75

First active picture sample, lines 21 and 284

Last active picture sample, lines 262 and 265

Last full-field sample, lines 8 and 271

625/50 systems

First full-field sample, lines (8) and (421)

First active picture sample, lines 24 and 336

Last active picture sample, lines 310 and 622

Last full field sample, lines (4) and (317)

Composite

795

0

767

767

972

0

947

947

Component

1444

0

1439

1439

Cb361

Cb0

Y719

Y719

NOTE - Full-field 625/50 line numbers (in brackets) are tentative

Table 3-Checkwords Included Samples

SECTION 5

Appendix 2


Data item b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

msb lsb

Ancillary data header, word 1 - component 0 0 0 0 0 0 0 0 0 0



Auxiliary data flag - composite 1 1 1 1 1 1 1 1 0 0

Data ID 0 1 1 1 1 1 0 1 0 0

Block number 1 0 0 0 0 0 0 0 0 0

Data count 0 1 0 0 0 1 0 0 0 0

Active picture data word 0 crc:<5:0> P P c5 c4 c3 c2 c1 c0 0 0

Active picture data word 1crc:<1 1:6> P P c11 c10 c9 c8 c7 c6 0 0

Active picture data word 2 crc<15:12> P P V 0 c15 c14 c13 c12 0 0

Full field data word 0 crc<5:0> P P c5 c4 c3 c2 c1 c0 0 0

Full field data word 1 crc<11:6> P P c11 c10 c9 c8 c7 c6 0 0

Full field data word 2 crc<15:12> P P V 0 c15 c14 c13 c12 0 0

Auxiliary data error flags P P 0 ues ida idh eda edh 0 0

Active picture error flags P P 0 ues ida idh eda edh 0 0

Full field error flags P P 0 ues ida idh eda edh 0 0

Reserved words (7 total) 1 0 0 0 0 0 0 0 0 0

Checksum S8 S8 S7 S6 S5 S4 S3 S2 S1 S0

Table 4-Definition of Ancillary Data Words

NOTE - P and V are defined in 4.2

End.

SECTION 5

Appendix 2


Documents

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