Upload
others
View
7
Download
0
Embed Size (px)
Citation preview
Keysight TechnologiesN1918A Power Analysis Managerand U2000 Series USB Power Sensors
Demo Guide
Introduction
This demonstration guide helps you to get familiar with the basic setup and configuration requirements to perform power measurements using the Keysight Technologies, Inc. U2000 Series USB power sensor via Keysight N1918A Power Analysis Manager.
All demonstrations exercised in this guide require the U2000 Series bundled application software N1918A Power Analysis Manager–Power Panel, any of the U2000 Series USB power sensors and a Keysight ESG E4438C vector signal generator.
This demonstration guide includes a step-by-step demonstration of basic average and pulse measurements.
03 | Keysight | N1918A Power Analysis Manager and U2000 Series USB Power Sensors - Demo Guide
U2000 Series USB Power SensorsThe U2000 Series USB power sensors are average, wide dynamic range power sensors that can be used with a PC or any selected Keysight USB-based instrument.
Key Features – Performs power measurements without a power meter – Offers a frequency range of 9 kHz to 24 GHz (sensor-dependent) – Provides a dynamic range from –60 dBm to +44 dBm – Offers internal zeroing capability and external calibration-free measurements – Allow average power measurement of CW and modulated signals, including
GSM, EDGE, WLAN and WIMAXTM
Figure 2. U2000 Series USB power sensor
Figure 1. Power Panel View – graphical user interface and functions
Power PanelThe Power Panel is the basic version of the Power Analysis Manager and is bundled with the purchase of a U2000 Series USB power sensor. The Power Panel provides an easy-to-use GUI that offers basic features that can be found in a typical power meter.
Key Features – Processes and displays multi-channel power measurements (with more than
10 channels simultaneously) – Provides larger, enhanced visual display, including power versus time graph
(trend chart) – Performs delta and ratio computations between data from two channels – Saves and restores instrument settings – Stores up to 10,000 measurement points – Stores data in comma separated value (CSV) files that are compatible with
Microsoft Excel – Provides up to 10 frequency dependent offset (FDO) tables – Supports time-gated measurement capability
save image file
disconnect instrument
connect instrument
Menu bar
Toolbar
Instrument Navigator panel
Instrument Properties tab
Gauge View
Multi List View
Soft Panel View
start measurementsstop measurementscreate Soft Panelcreate Gaugecreate Strip Chartremove view
presetsave instrument settingsload instrument settingssave instrument screenunlock local accessshow error list
reset instrumentsFDO tableInstrument Properties toolbar
duty cycle (%)
input frequency in MHz
channel offset (dB)
04 | Keysight | N1918A Power Analysis Manager and U2000 Series USB Power Sensors - Demo Guide
Demonstration Preparation
The following instruments and software are required in order to perform the demonstrations illustrated in this demo guide:
– Keysight N1918A Power Analysis Manager (Power Panel) – Keysight U2000 Series USB Power Sensors – Keysight IO Libraries Suite – Keysight ESG E4438C Vector Signal Generator
Product type Description
N1918A Power Analysis Manager Power Panel—Basic version
Keysight U2000 Series USB Power Sensors Any of the USB sensors—U200xA/B/H Series
Keysight ESG E4438C Vector Signal Generator E4438C firmware revision C.04.60 or later
Keysight Automation-Ready CD Keysight IO Libraries Suite 14.2 or higher
In this guide, keystrokes surrounded by [ ] represent instrument front panel keys.
Connecting and Verifying ESG and U2000 Series USB Power SensorsInstructions
1. Connect the USB sensor to a PC that runs the Power Analysis Manager and the Keysight IO Libraries Suite 14.2 or higher using the USB mini-B connector.
2. Connect the other end of the USB sensor to the ESG as shown in Figure 3.
3. Go to Start > All Programs > Keysight IO Libraries Suite > Keysight Connection Expert to launch the Keysight Connection Expert application.
4. Detect and verify all connected instruments to ensure suc- cessful connections have been established. Right-click on each listed instrument in the Keysight Connection Expert and send the standard *IDN? command to the instrument for identification.
5. Once all connected instruments have been successfully verified, launch the Power Panel to begin. Go to Start > All Programs > Keysight N1918A Power Analysis Manager > Power Panel.
6. To start using the Power Panel, search for a connected instrument using the options available in the Find Connected Instrument panel.
7. Click Find to search for a connected instrument via the sup- ported IO connectivity—GPIB, LAN, or USB options.
8. Select the USB sensor and click Connect. The Power Panel is ready to use.
9. Select the USB sensor on the Instrument Navigator panel. On the Instrument Properties panel, click Zero to perform zeroing on the USB sensor.
For more information on the Power Panel installation, system requirements, setup, and usage, visit www.keysight.com/find/N1918A.
Figure 3. PC, ESG and USB power sensor configuration diagram
Connecting U2000Series USB sensor toPC using USB mini-Bconnector
RF Out
05 | Keysight | N1918A Power Analysis Manager and U2000 Series USB Power Sensors - Demo Guide
Average Power Measurement Demonstration ObjectiveTo demonstrate the capability of the Power Panel to carry out average power measurement using the U2000 Series USB power sensor.
Instructions
On the ESG
1. Set the instrument to default Press [Preset]
2. Set the frequency and amplitude 1. Press [Frequency] 1900 > MHz2. Press [Amplitude] 0 > dBm
3. Turn on the RF Output Toggle [RF On/Off] to “ON”
In the Power Panel
1. Set the frequency 1. Click Channel on the Instrument Navigator panel.2. Set Frequency (Hz) to “1.900 G” on the Instrument Properties panel.
2. Start the measurement (See Figure 4)
Click on the Power Panel toolbar.
Figure 4. Setting the properties in the Power Panel for average power measurements using USB power sensor
06 | Keysight | N1918A Power Analysis Manager and U2000 Series USB Power Sensors - Demo Guide
Pulse Power Measurement Demonstration
Pulse power is determined by measuring the average power of the pulse and then dividing the measurement results by the pulse cycle value to obtain the pulse powerreading, as expressed by the following equation: Pp = Pavg / Duty Cycle
The measurement result is a mathematical representation of the pulse power rather than the actual measurement with the assumption of constant peak power. To ensureaccurate pulse power readings, the input signal must be a repetitive rectangular pulse with a constant duty cycle.
ObjectiveTo demonstrate the capability of the Power Panel to carry out pulse power measure-ment using the U2000 Series USB power sensor.
In this demonstration, we supplying a pulsed signal with the pulse width of 10 μs and a pulse period or pulse repetition interval (PRI) of 40 μs. The pulse signal is set to the power level of approximately 0 dBm. The measured average power of the signal is –6.24 dBm (See Figure 6). The duty cycle is known to be 10 μs divided by 40 μs, which is 25%—this value can be configured in the Power Panel. This generates a pulse reading of –0.22 dBm (See Figure 7).
To understand what the USB power sensor does, we can look at the duty cycle calcula-tion. The equation, Average Power = 10 log (Pulse Width/PRI), provides the difference between average power and pulse power. The calculated value in this demonstration shows that the average power is –6.02 dBm lower than the pulse power. The Power Panel makes this correction to show the pulse power using the provided duty cycle.
Instructions
On the ESG
1. Set the instrument to default Press [Preset]
2. Set the frequency and amplitude 1. Press [Frequency] 1900 > MHz2. Press [Amplitude] 0 > dBm
3. Set the pulse signal 1. Press [Pulse] Pulse Period > 40 > usec2. Pulse Width > 10 > usec
4. Activate the pulse signal Toggle Pulse On/Off to “ON”
Power
TimeA (Pulse Width)
B (Pulse Repetition Interval)
MeasuredAverage Power
Duty Cycle = AB
Figure 5. Pulse power calculation
07 | Keysight | N1918A Power Analysis Manager and U2000 Series USB Power Sensors - Demo Guide
Instructions
In the Power Panel
1. Set the frequency 1. Click Channel on the Instrument Navigator panel.2. Set Frequency (Hz) to “1.900 G” on the Instrument Properties panel.
2. Acquire average power measurement (See Figure 6)
Click on the Power Panel toolbar.
3. Stop the power measurement Click the Stop button on the Power Panel toolbar.
4. Enable and set the duty cycle to 25% 1. Click Channel on the Instrument Navigator panel.2. Select Duty Cycle checkbox.3. Set the Duty Cycle (%) to “25.000”.
5. Start the measurement (See Figure 7)
Click on the Power Panel toolbar.
Figure 7. Pulse power measurement with duty cycle value set to 25%
Figure 6. Average power measurement of pulse signal
08 | Keysight | N1918A Power Analysis Manager and U2000 Series USB Power Sensors - Demo Guide
Instructions
On the ESG
1. Set the instrument to default Press [Preset]
2. Set the frequency and amplitude 1. Press [Frequency] 900 > MHz2. Press [Amplitude] 0 > dBm
3. Set GSM signal 1. Press [Mode], {Real Time TDMA}, {GSM}.2. Toggle {GSM} to “On”.3. Press {Data Format Framed}.
4. Turn off the Timeslot #0 1. Press {Configure Timeslot}.2. Toggle {Timeslot} to “Off”.
5. Turn on the Timeslot #5 1. Press {Timeslot #0}, {5} and {Enter}.2. Toggle {Timeslot} to “On”.
6. Turn on the RF signal 1. Toggle [RF On/Off] to “On”.
In the Power Panel
1. Set the frequency 1. Click Channel on the Instrument Navigator panel.2. Set Frequency (Hz) to “900 M” on the Instrument Properties panel
2. Set the gate 1. Click Gate on the Instrument Navigator panel.2. Select Enable Gate to enable the gate.3. Set gate 1 Start (s) to “2.912 m”.4. Set Length (s) to “520 μ”.
3. Set instrument source to external trigger
1. Click Trigger on the Instrument Navigator panel.2. Select Cont Trig on the Instrument Properties panel.
4. Start the measurement (See Figure 8) Click on the Power Panel toolbar.
Time-Gated Average Power Measurement Demonstration
Objective To demonstrate the capability of time-gated function to carry out average power measurement of a 900 MHz GSM pulse using the U2000 Series power sensor.
Figure 8. Time-gated average power measurement of a GSM pulse at Timeslot #5.
09 | Keysight | N1918A Power Analysis Manager and U2000 Series USB Power Sensors - Demo Guide
References
Publication title Pub number
Application Note 1449-1: Fundamental of RF and Microwave Power Measurements (Part 1)
5988-9213EN
Application Note 1449-2: Fundamental of RF and Microwave Power Measurements (Part 2),
5988-9214EN
Application Note 1449-3: Fundamental of RF and Microwave Power Measurements (Part 3)
5988-9215EN
Application Note 1449-4: Fundamental of RF and Microwave Power Measurements (Part 4)
5988-9216EN
Application Note 64-4D: 4 Steps for Making Better Power Measurements 5989-8167EN
Product Note: Choosing the Right Power Meter and Sensors 5968-7150EN
Related Literature
Publication title Pub number
Data Sheet: N1918A Power Analysis Manager 5989-6612EN
Installation Guide: N1918A Power Analysis Manager N1918A-90002
Technical Overview: N1918A Power Analysis Manager 5989-6613AEN
Data Sheet: U2000 Series USB Power Sensor 5989-6278EN
Technical Overview: U2000 Series USB Power Sensor 5989-6279EN
10 | Keysight | N1918A Power Analysis Manager and U2000 Series USB Power Sensors - Demo Guide
This information is subject to change without notice.© Keysight Technologies, 2017Published in USA, December 1, 20175989-7083ENwww.keysight.com
www.keysight.com/find/usbsensor
For more information on Keysight Technologies’ products, applications or services, please contact your local Keysight office. The complete list is available at:www.keysight.com/find/contactus
Americas Canada (877) 894 4414Brazil 55 11 3351 7010Mexico 001 800 254 2440United States (800) 829 4444
Asia PacificAustralia 1 800 629 485China 800 810 0189Hong Kong 800 938 693India 1 800 11 2626Japan 0120 (421) 345Korea 080 769 0800Malaysia 1 800 888 848Singapore 1 800 375 8100Taiwan 0800 047 866Other AP Countries (65) 6375 8100
Europe & Middle EastAustria 0800 001122Belgium 0800 58580Finland 0800 523252France 0805 980333Germany 0800 6270999Ireland 1800 832700Israel 1 809 343051Italy 800 599100Luxembourg +32 800 58580Netherlands 0800 0233200Russia 8800 5009286Spain 800 000154Sweden 0200 882255Switzerland 0800 805353
Opt. 1 (DE)Opt. 2 (FR)Opt. 3 (IT)
United Kingdom 0800 0260637
For other unlisted countries:www.keysight.com/find/contactus(BP-9-7-17)
DEKRA CertifiedISO9001 Quality Management System
www.keysight.com/go/qualityKeysight Technologies, Inc.DEKRA Certified ISO 9001:2015Quality Management System
Evolving Since 1939Our unique combination of hardware, software, services, and people can help you reach your next breakthrough. We are unlocking the future of technology. From Hewlett-Packard to Agilent to Keysight.
myKeysightwww.keysight.com/find/mykeysightA personalized view into the information most relevant to you.
http://www.keysight.com/find/emt_product_registrationRegister your products to get up-to-date product information and find warranty information.
Keysight Serviceswww.keysight.com/find/serviceKeysight Services can help from acquisition to renewal across your instrument’s lifecycle. Our comprehensive service offerings—one-stop calibration, repair, asset management, technology refresh, consulting, training and more—helps you improve product quality and lower costs.
Keysight Assurance Planswww.keysight.com/find/AssurancePlansUp to ten years of protection and no budgetary surprises to ensure your instruments are operating to specification, so you can rely on accurate measurements.
Keysight Channel Partnerswww.keysight.com/find/channelpartnersGet the best of both worlds: Keysight’s measurement expertise and product breadth, combined with channel partner convenience.