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NI PXI-5650/5651/5652 Calibration Procedure

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© National Instruments

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17. Connect the 6 dB precision attenuator to the PXI-5650/5651/5652 RF OUT front panel 

connector.

18. Connect the spectrum analyzer RF IN connector to the 6 dB precision attenuator.

Note

You must use the same attenuator you used in the 

Characterizing the 

Spectrum Analyzer

 procedure.

19. Call the niRFSG 5652 Initialize Attenuator Calibration VI, and set the 

measurement 

range

 parameter to 

Below -40 dBm

.

20. Call the niRFSG 5652 Configure Attenuator Calibration VI.
21. Use the spectrum analyzer to measure the mean power of the RF output using the following 

spectrum analyzer settings:

Center frequency: Value returned by the 

frequency to measure 

parameter of the 

niRFSG 5652 Configure Attenuator Calibration VI 

Reference level: -38 dBm

Frequency span: 0 Hz

Resolution bandwidth: 30 Hz

Sweep time: 5 ms

Reference Clock source: External

22. Add the 

Spectrum Analyzer Correction Factor

 recorded in the 

Characterizing the Spectrum 

Analyzer

 section to the power measurement from step 21 at the corresponding frequency.

23. Call the niRFSG 5652 Adjust Attenuator Calibration VI, and wire the measured value from 

step 22 to the 

measured RF OUT power

 parameter.

24. Repeat steps 20 through 23 until the 

attenuator calibration complete

 parameter of the 

niRFSG 5652 Adjust Attenuator Calibration VI returns a value of TRUE.

25. Call the niRFSG Close External Calibration VI to close the session. Set the 

write 

calibration to hardware? 

parameter to TRUE to store the results to the EEPROM on the 

PXI-5650/5651/5652.

Adjusting ALC Limits

This procedure updates the ALC limits table of the device based on the results of the ALC and 
attenuator adjustments. The ALC limits table determines which attenuator and path NI-RFSG 
uses for each frequency and power combination. Complete the following steps to adjust the ALC 
limits table of the PXI-5650/5651/5652:
1.

Call the niRFSG Initialize External Calibration VI.

2.

Call the niRFSG 5652 Update ALC Limits Table VI, and set the 

update max power spec

 

parameter to FALSE and the 

update other table limits 

parameter to TRUE. 

3.

Call the niRFSG Close External Calibration VI to close the session. Set the 

write 

calibration to hardware?

 parameter to TRUE to store the results to the EEPROM on the 

PXI-5650/5651/5652.

Содержание PXI-5650

Страница 1: ...6 Verification 8 Validating the ALC Limits Table 8 Verifying Frequency Accuracy 9 Verifying High Power Level Accuracy 9 Verifying Low Power Level Accuracy 11 Verifying Single Sideband Phase Noise at...

Страница 2: ...e verification procedures Specifications for your device NI PXI 5650 5651 5652 Getting Started Guide NI RF Signal Generators Help The latest versions of these documents are available on ni com manuals...

Страница 3: ...with Preamplifier option B23 and B25 Characterizing the spectrum analyzer Frequency accuracy Low power level accuracy Single sideband phase noise Harmonics Subharmonics Nonharmonics Frequency range 50...

Страница 4: ...accuracy 1E 9 BNC m to BNC m cable Pomona 5697 SMA m to BNC m cable Pasterneck Enterprises PE3696 36 SMA m to SMA m cable MegaPhase G916 S1S1 36 Frequency range DC to 6 6 GHz Insertion loss 1 2 dB up...

Страница 5: ...time ensures that the PXI 5650 5651 5652 is at a stable operating temperature In each verification procedure insert a delay between configuring all devices and acquiring the measurement This delay may...

Страница 6: ...connectors on the device under test DUT and test equipment are fragile Carefully perform the steps in these procedures to prevent damaging any DUTs or test equipment Characterizing the Spectrum Analy...

Страница 7: ...frequency test points recorded in step 5 7 Connect the rubidium 10 MHz frequency reference signal to the spectrum analyzer REF IN rear panel connector 8 Connect the 6 dB precision attenuator to the PX...

Страница 8: ...on the device EEPROM 1 Call the niRFSG Initialize External Calibration VI 2 Call the niRFSG 5652 Validate ALC Limits Table VI Note Any invalid ALC limits are reported in the invalid limits indicator I...

Страница 9: ...ter setting the following NI RFSG property settings Frequency Hz 400 MHz Power Level dBm 20 dBm Generation Mode CW Reference Clock source Onboard Clock 6 Use the spectrum analyzer to measure the frequ...

Страница 10: ...High Power Level Accuracy Test Points and Limits Device Frequency Start Power dBm Test Limit dB PXI 5650 5651 5652 500 kHz 5 1 6 1 MHz 5 2 MHz 5 5 MHz 5 10 MHz 8 0 75 20 MHz 8 50 MHz 10 100 MHz 10 150...

Страница 11: ...sion attenuator to the PXI 5650 5651 5652 RF OUT front panel connector Note You must use the same attenuator you used in the Characterizing the Spectrum Analyzer procedure 3 Connect the spectrum analy...

Страница 12: ...r measurement in this step at the corresponding frequency Compare the value to the Test Limit listed in Table 5 Table 5 Low Level Accuracy Test Points and Limits 40 dBm Device Frequency Stop Power dBm...

Страница 13: ...PXI 5650 5651 5652 RF OUT front panel connector 3 Connect the spectrum analyzer RF INPUT connector to the 6 dB precision attenuator 4 Connect the rubidium 10 MHz frequency reference signal to the spe...

Страница 14: ...spectrum analyzer and record this value 10 Apply the following equation to the value measured in step 9 phase noiseSSB at 10 KHz offset Measurement 10log RBW where Measurement value measured in step...

Страница 15: ...1 Connect the PXI 5650 5651 5652 REF IN OUT front panel connector to the rubidium 10 MHz frequency reference signal 2 Connect the 6 dB precision attenuator to the PXI 5650 5651 5652 RF OUT front pane...

Страница 16: ...generated 12 Configure the spectrum analyzer with the following settings Center frequency 200 MHz Reference level 5 dBm Resolution bandwidth 500 Hz Span 100 kHz Reference Clock source External 13 Meas...

Страница 17: ...bration Procedure National Instruments 17 Table 8 Test Points for Nonharmonic Test Device Test Point MHz PXI 5650 5651 5652 200 400 600 800 1 000 1 200 PXI 5651 5652 1 400 1 600 1 800 2 000 2 200 2 40...

Страница 18: ...00 4 600 4 800 5 000 5 200 5 400 5 600 5 800 6 000 6 200 6 400 6 600 Table 9 Center Frequencies for Nonharmonic Test Device Center Frequency MHz PXI 5650 5651 5652 35 125 1 235 125 PXI 5651 5652 3 235...

Страница 19: ...ettings Center frequency 10 MHz Reference level 5 dBm Resolution bandwidth 1 kHz Frequency span 500 kHz Reference Clock source External 6 Generate a signal after setting the following NI RFSG property...

Страница 20: ...51 5652 10 MHz 15 20 MHz 50 MHz 100 MHz 150 MHz 200 MHz 400 MHz 800 MHz 1 0 GHz PXI 5651 5652 1 6 GHz 20 2 0 GHz 2 5 GHz 3 0 GHz 3 3 GHz PXI 5652 3 5 GHz 20 3 7 GHz 4 0 GHz 4 5 GHz 5 0 GHz 5 5 GHz 6 0...

Страница 21: ...th the following settings Center frequency 10 MHz Reference level 45 dBm Resolution bandwidth 50 Hz Frequency span 500 Hz Reference Clock source External 6 Generate a signal after setting the followin...

Страница 22: ...50 dBm to 0 dBm Output Power Device Frequency Test Limit dBc PXI 5650 5651 5652 10 MHz 15 20 MHz 50 MHz 100 MHz 150 MHz 200 MHz 400 MHz 800 MHz 1 0 GHz PXI 5651 5652 1 6 GHz 20 2 0 GHz 2 5 GHz 3 0 GH...

Страница 23: ...ear panel connector 5 Configure the spectrum analyzer with the following settings Center frequency 3 3 GHz Reference level 5 dBm Resolution bandwidth 1 kHz Span 500 kHz Reference Clock source External...

Страница 24: ...Test Limit dBc Subharmonic 1 5x Frequency GHz Subharmonic 1 5x Test Limit dBc 3 31 1 655 30 4 965 15 3 5 1 75 5 25 25 3 7 1 85 5 55 3 9 1 95 5 85 4 1 2 05 6 15 4 2 2 10 25 6 30 20 4 5 2 25 20 6 75 25...

Страница 25: ...ear panel connector 5 Configure the spectrum analyzer with the following settings Center frequency 3 3 GHz Reference level 45 dBm Resolution bandwidth 50 Hz Span 500 Hz Reference Clock source External...

Страница 26: ...x Test Limit dBc Subharmonic 1 5x Frequency GHz Subharmonic 1 5x Test Limit dBc 3 31 1 65 30 4 95 15 3 5 1 75 5 25 25 3 7 1 85 5 55 3 9 1 95 5 85 4 1 2 05 6 15 4 2 2 10 25 6 30 20 25 4 5 2 25 20 6 75...

Страница 27: ...able limits parameter to FALSE 4 Call the niRFSG 5652 Initialize ALC Calibration VI and set the measurement range parameter to Above 10 MHz 5 Call the niRFSG 5652 Configure ALC Calibration VI 6 Use th...

Страница 28: ...Calibration VI 6 Call the niRFSG 5652 Initialize Attenuator Calibration VI and set the measurement range parameter to Above 40 dBm Below 10 MHz 7 Call the niRFSG 5652 Configure Attenuator Calibration...

Страница 29: ...e corresponding frequency 23 Call the niRFSG 5652 Adjust Attenuator Calibration VI and wire the measured value from step 22 to the measured RF OUT power parameter 24 Repeat steps 20 through 23 until t...

Страница 30: ...urned by the center frequency parameter of the niRFSG 5652 Configure Reference Clock Calibration VI 9 Use the spectrum analyzer frequency counter to measure the frequency of the peak 10 Call the niRFS...

Страница 31: ...from NI Application Engineers Visit ni com services for NI Factory Installation Services repairs extended warranty and other services Visit ni com register to register your NI product Product registr...

Страница 32: ...an find information about end user license agreements EULAs and third party legal notices in the readme file for your NI product Refer to the Export Compliance Information at ni com legal export compl...

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