National Instruments PXIe-5665 Calibration Manual
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National Instruments PXIe-5665 Calibration Manual

Calibration procedure 3.6 ghz and 14 ghz rf vector signal analyzer
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CALIBRATION PROCEDURE
PXIe-5665
3.6 GHz and 14 GHz RF Vector Signal Analyzer
This document contains the verification procedures for the National Instruments PXIe-5665
RF vector signal analyzer (VSA). Refer to
calibration solutions.
When not otherwise specified, the procedures in this document refer to both the PXIe-5665
3.6 GHz VSA and the PXIe-5665 14 GHz VSA products. In places where the procedures differ
between the two products, the appropriate device settings are specified.
PXIe-5665 tuned frequencies greater than 3.6 GHz and procedures with the
Note
preselector enabled for frequencies greater than 3.6 GHz apply only to the PXIe-5665
14 GHz VSA.
NI warrants the PXIe-5665 to meet its published specifications if the individual modules are
calibrated and operating within specifications. For more information about RF system
calibration, visit
ni.com/manuals
Contents
Software.................................................................................................................................... 2
Documentation.......................................................................................................................... 2
Test Equipment......................................................................................................................... 3
Test Conditions......................................................................................................................... 10
System Options......................................................................................................................... 11
Initial Setup............................................................................................................................... 11
Characterizing the Test System ................................................................................................ 11
Zeroing and Calibrating the Power Sensor....................................................................... 11
Characterizing Power Splitter Reference Output ............................................................. 11
Characterizing Power Splitter Difference......................................................................... 12
Characterizing RF Source Power (Direct)........................................................................ 13
Characterizing RF Source Power (with Lowpass Filter).................................................. 15
Characterizing RF Source Power (Through Splitter) ....................................................... 21
Characterizing RF Source Power (with Splitter and Attenuator) ..................................... 23
Characterizing Spectrum Analyzer Response .................................................................. 25
As-Found and As-Left Limits................................................................................................... 27
Verification ............................................................................................................................... 27
Verifying Reference Accuracy ......................................................................................... 27
Verifying Phase Noise ...................................................................................................... 27
ni.com/calibration
and search for
Letter of Conformance
for more information about
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  • Page 1: Table Of Contents

    When not otherwise specified, the procedures in this document refer to both the PXIe-5665 3.6 GHz VSA and the PXIe-5665 14 GHz VSA products. In places where the procedures differ between the two products, the appropriate device settings are specified.

  • Page 2: Software

    Appendix A: Anti-Distortion Test Fixture................83 Appendix B: Power Sensor Calibration Factor Uncertainty............. 84 Worldwide Support and Services ..................... 85 Software Calibrating the PXIe-5665 requires you to install the following software on the calibration system: • NI-RFSA 2.5 or later •...

  • Page 3: Test Equipment

    Test Equipment Table 1 lists the equipment NI recommends for the performance verification procedures. If the recommended equipment is not available, select a substitute using the minimum requirements listed in the table. PXIe-5665 Calibration Procedure | © National Instruments | 3...
  • Page 4 Table 1. Recommended Equipment for PXIe-5665 Calibration Equipment Recommended Models Where Used Minimum Requirements Power meter Anritsu ML2438A Verifying frequency response, Display resolution: ≤0.01 dB Verifying absolute amplitude accuracy, Settling: ±0.1% Verifying LO output power Instrumentation accuracy: <±0.5% Noise, zero set, and drift: ≤±0.5% full-scale (lowest range) Reference power uncertainty: ≤±0.9%...
  • Page 5 Table 1. Recommended Equipment for PXIe-5665 Calibration (Continued) Equipment Recommended Models Where Used Minimum Requirements Signal generator Anritsu MG3692C Verifying third-order intermodulation Frequency range: 8 MHz to 16 GHz (RF source 1) distortion, Leveled power: -115 dBm to 18 dBm...
  • Page 6 Table 1. Recommended Equipment for PXIe-5665 Calibration (Continued) Equipment Recommended Models Where Used Minimum Requirements Spectrum analyzer Rohde & Schwarz FSUP26 Verifying frequency response, Frequency range: 10 MHz to 18 GHz Verifying phase noise, Noise floor: <-152 dBm/Hz Options B60 and B61...
  • Page 7 Table 1. Recommended Equipment for PXIe-5665 Calibration (Continued) Equipment Recommended Models Where Used Minimum Requirements SMA (m)-to- MegaPhase — Frequency range: DC to 18 GHz SMA (m) cables G916-SISI-36 Insertion loss: ≤2 dB at 18 GHz (36 in.) (3x) Impedance: 50 Ω...
  • Page 8 Table 1. Recommended Equipment for PXIe-5665 Calibration (Continued) Equipment Recommended Models Where Used Minimum Requirements SMA (m)-to- Huber+Suhner — Frequency range: DC to 18 GHz SMA (f) 20 dB 6620_SMA-50-1/199N Attenuation: 20 dB (nominal) attenuator Power rating: 2 W average Impedance: 50 Ω...
  • Page 9 Table 1. Recommended Equipment for PXIe-5665 Calibration (Continued) Equipment Recommended Models Where Used Minimum Requirements Frequency reference Symmetricom 8040 — Frequency: 10 MHz source rubidium frequency standard Frequency accuracy: ±1 × 10 Test Conditions Torque wrench — — Refer to for torque wrench specifications.

  • Page 10: Test Conditions

    Test Conditions The following setup and environmental conditions are required to ensure the PXIe-5665 meets published specifications. • Keep cabling as short as possible. Long cables and wires act as antennae, picking up extra noise that can affect measurements. •...

  • Page 11: System Options

    • 25 MHz instantaneous bandwidth: Verification procedures include any changes necessary to accommodate this option. There are no changes to the PXIe-5665 specifications for this digitizer option. Initial Setup Refer to the NI PXIe-5665 RF Vector Signal Analyzer Getting Started Guide for information about how to install the software and hardware and how to configure the device in Measurement &...

  • Page 12: Characterizing Power Splitter Difference

    Set the power sensors calibration factor for the measurement frequency at 4 GHz. Calculate the Power Splitter at 4 GHz Correction Factor using the following formula: Power Splitter at 4 GHz Correction Factor = Corrected Power Sensor B Power - Corrected Power Sensor A Power 12 | ni.com | PXIe-5665 Calibration Procedure...

  • Page 13: Characterizing Rf Source Power (Direct)

    SMA (m)-to-SMA (m) Cable Power Sensor B Set the RF source 2 frequency according to the first row in Table 2 or Table 3 as appropriate. Table 2. PXIe-5665 3.6 GHz VSA RF Source 2 Characterization Frequencies Start Frequency Stop Frequency Step Size 100.033325 MHz...
  • Page 14 Table 2. PXIe-5665 3.6 GHz VSA RF Source 2 Characterization Frequencies (Continued) Start Frequency Stop Frequency Step Size 25.033325 MHz 1.625033325 GHz 100 MHz 1.724966675 GHz 3.224966675 GHz 100 MHz 3.3875 GHz — — 987.5 MHz — — Table 3. PXIe-5665 14GHz VSA RF Source 2 Characterization Frequencies...

  • Page 15: Characterizing Rf Source Power (With Lowpass Filter)

    RF Source 2 3.5 mm (f)-to-3.5 mm (f) Adaptor SMA (m)-to-SMA (m) Cable Power Sensor B SMA (m)-to-SMA (m) Cable Power Meter Anti-Distortion Test Fixture Disable the RF source 1 output. PXIe-5665 Calibration Procedure | © National Instruments | 15...
  • Page 16 Table 4. The final RF source 2 power setting is the RF Source Power LPF for that frequency. Repeat steps 3 to 6 for all the frequencies and powers in Table 4. 16 | ni.com | PXIe-5665 Calibration Procedure...

  • Page 17: Characterizing Rf Source Power (Combined) For Frequencies ≤700 Mhz

    3.5 mm (f)-to-3.5 mm (f) Adaptor SMA (m)-to-SMA (m) Cable Power Sensor B SMA (m)-to-SMA (m) Cable Power Meter Anti-Distortion Test Fixture Set the anti-distortion test fixture to the ≤700 MHz combiner path. PXIe-5665 Calibration Procedure | © National Instruments | 17...
  • Page 18 Table 6. The RF source 1 power is the RF Source 1 Programmed Power. 10. Repeat steps 3 to 9 for all remaining frequency and power values in Table 6. 18 | ni.com | PXIe-5665 Calibration Procedure...

  • Page 19: Characterizing Rf Source Power (Combined) For Frequencies >700 Mhz

    3.5 mm (f)-to-3.5 mm (f) Adaptor SMA (m)-to-SMA (m) cable Power Sensor B SMA (m)-to-SMA (m) cable Power Meter Anti-Distortion Test Fixture Set the anti-distortion test fixture to the >700 MHz combiner path. PXIe-5665 Calibration Procedure | © National Instruments | 19...
  • Page 20 Set the RF source 1 and RF source 2 frequency and power values according to the first row in Table 7. Table 7. PXIe-5665 RF Source Power (Combined) Test Settings (Frequencies >700 MHz) RF Source 1 RF Source 2 Start...

  • Page 21: Characterizing Rf Source Power (Through Splitter)

    Connect the RF source 2 output to the power splitter input through the SMA (m)-to- SMA (m) cable. Connect a 50 Ω termination load to the reference output of the power splitter. PXIe-5665 Calibration Procedure | © National Instruments | 21...
  • Page 22 Figure 6. RF Source Power (Through Splitter) Characterization Equipment Setup RF Source 2 3.5 mm (m)-to-3.5 mm (m) Adaptor SMA (m)-to-SMA (m) Cable 3.5 mm (f)-to-3.5 mm (f) Adaptor 50 Ω Termination Load Power Sensor B Power Splitter Power Meter 22 | ni.com | PXIe-5665 Calibration Procedure...

  • Page 23: Characterizing Rf Source Power (With Splitter And Attenuator)

    Connect the RF source 2 output to the power splitter input through the SMA (m)-to- SMA (m) cable. Connect power sensor A to the reference output of the power splitter. PXIe-5665 Calibration Procedure | © National Instruments | 23...
  • Page 24 SMA (m)-to-SMA (m) Cable 3.5 mm (f)-to-3.5 mm (f) Adaptor Power Sensor A Power Sensor B Power Splitter Power Meter 3.5 mm (m)-to-3.5 mm (m) Adaptor Set the RF source 2 power to 0 dBm. 24 | ni.com | PXIe-5665 Calibration Procedure...

  • Page 25: Characterizing Spectrum Analyzer Response

    Connect the RF source 2 output to the power splitter input through the SMA (m)-to- SMA (m) cable. Connect power sensor A to the power splitter reference output through the SMA (m)-to- SMA (m) cable. PXIe-5665 Calibration Procedure | © National Instruments | 25...
  • Page 26 Factor from the Characterizing Power Splitter Difference equipment characterization section of this document using the following equation: Corrected Power Sensor Power = Power Sensor A reading + Power Splitter at 4 GHz Correction Factor 26 | ni.com | PXIe-5665 Calibration Procedure...

  • Page 27: As-Found And As-Left Limits

    The performance verification procedures assume that adequate traceable uncertainties are available for the calibration references. In the event of a failure during the verification of the PXIe-5665, perform a calibration of the individual modules. Return the PXIe-5603 or PXIe-5605 module to NI for calibration and adjustment, if needed.

  • Page 28: Verifying Frequency Response And Absolute Amplitude Accuracy

    Connect the RF source 2 to the power splitter input using the SMA (m)-to-SMA (m) cable. Connect the power splitter reference output to power sensor A. Connect the other power splitter output to the PXIe-5665 RF IN connector using the 3.5 mm (m)-to-3.5 mm (m) adaptor and 20 dB attenuator. The completed equipment setup is shown in Figure 9 and Figure 10.
  • Page 29 3.5 mm (m)-to-3.5 mm (m) Adaptor SMA (m)-to-SMA (m) cable 20 dB Attenuator Power Sensor A Create a new session for the PXIe-5665. Configure the PXIe-5665 according to the following fixed property settings. These settings remain unchanged during the test. • Acquisition Type: Spectrum •...
  • Page 30 Start power: -50 dBm • Stop power: -10 dBm Set the PXIe-5665 center frequency and the RF source 2 frequency according to the first row in Table 10. Table 10. Frequency Response and Absolute Amplitude Accuracy Verification (Frequencies >10 MHz) Test Frequencies...
  • Page 31 19. Repeat steps 8 to 18 for an instantaneous bandwidth of 50 MHz (25 MHz for the PXIe-5665 with 25 MHz bandwidth). 20. Repeat steps 8 to 19 with the PXIe-5665 preamplifier enabled. Repeat steps 8 to 19 for test frequencies greater than 3.6 GHz (PXIe-5665 14 GHz VSA) with the PXIe-5665 preselector enabled and preamplifier disabled.
  • Page 32 >2.8 GHz to PXIe-5665 ±0.45 ±0.30 3.6 GHz 3.6 GHz VSA PXIe-5665 ±0.50 ±0.45 14 GHz VSA As-Found and As-Left Limits Refer to the section of this document for more information about as-left limits. 32 | ni.com | PXIe-5665 Calibration Procedure...
  • Page 33 >7.5 GHz to ±0.80 ±0.50 8.5 GHz >8.5 GHz to ±1.25 ±0.75 14 GHz As-Found and As-Left Limits Refer to the section of this document for more information about as-left limits. PXIe-5665 Calibration Procedure | © National Instruments | 33...
  • Page 34 As-Found and As-Left Limits Refer to the section of this document for more information about as-left limits. Table 15. PXIe-5665 14 GHz VSA Absolute Amplitude Accuracy Verification Test Limits (Preamplifier Disabled, PXIe-5665 14 GHz VSA Preselector Enabled) Frequency As-Found Limit (dB) As-Left Limit (dB) >3.6 GHz to 7.5 GHz...

  • Page 35: Verifying Average Noise Level

    Verifying Average Noise Level Connect a 50 Ω termination to the PXIe-5665 RF IN connector. The completed equipment setup is shown in Figure 11 and Figure 12. Figure 11. PXIe-5665 3.6 GHz VSA Average Noise Level Verification Equipment Setup NI PXIe-5622...
  • Page 36 Figure 12. PXIe-5665 14 GHz VSA Average Noise Level Verification Equipment Setup NI PXIe-5622 NI PXIe-5653 NI PXIe-5605 Downconverter 20 Hz - 14 GHz Synthesizer 16-Bit IF Digitizer ACCESS ACTIVE ACCESS ACTIVE IF IN REF IN RF IN 10 MHz...
  • Page 37 (dBm/Hz). 10. Repeat steps 4 to 9 for all frequencies in Table 16. 11. Repeat steps 4 to 10 for frequencies less than or equal to 3.6 GHz with the PXIe-5665 preamplifier enabled. Repeat steps 4 to 10 for frequencies greater than 3.6 GHz with (PXIe-5665 14 GHz VSA) the PXIe-5665 preselector enabled and preamplifier disabled.
  • Page 38 13. Compare the PXIe-5665 Average Noise (dBm/Hz) to the verification test limits in Table 18, Table 19, or Table 20 as appropriate. Table 18. Average Noise Verification Test Limits (Preamplifier Disabled, PXIe-5665 14 GHz VSA Preselector Disabled) As-Found Limit As-Left Limit...
  • Page 39 14. Close the PXIe-5665 session. If the average noise level verification procedure determines that the PXIe-5665 is outside its Worldwide Support and Services limits, refer to for information about support resources or service requests.

  • Page 40: Verifying Non-Input-Related Spurs (Residual Spurs)

    Verifying Non-Input-Related Spurs (Residual Spurs) Connect a 50 Ω termination to the PXIe-5665 RF IN connector. The completed equipment setup is shown in Figure 13 and Figure 14. Figure 13. PXIe-5665 3.6 GHz VSA Non-Input-Related Spurs Verification Equipment Setup NI PXIe-5603...
  • Page 41 • Preamp Enabled: Disabled • Span: 50 MHz (25 MHz for the PXIe-5665 with 25 MHz bandwidth) • Device Instantaneous Bandwidth: 50 MHz (25 MHz for the PXIe-5665 with 25 MHz bandwidth) • Resolution Bandwidth: 2 kHz • RF Attenuation: 0 dB •...
  • Page 42 Commit the PXIe-5665 settings to hardware. Read the power spectrum from the PXIe-5665. Measure the highest power in the spectrum returned from the PXIe-5665. This value is the PXIe-5665 Non-Input-Related Spurious Level. Repeat steps 4 to 7 for all frequencies in step 4.

  • Page 43: Verifying Lo-Related Spurs (Sideband Spurs)

    Connect the power splitter reference output to the spectrum analyzer through the SMA (m)-to-SMA (m) cable. Connect the other power splitter output to the PXIe-5665 RF IN connector using the 3.5 mm (m)-to-3.5 mm (m) adaptor. The completed equipment setup is shown in Figure 15 and Figure 16.
  • Page 44 Figure 16. PXIe-5665 14 GHz VSA LO-Related Spurs Verification Equipment Setup NI PXIe-5622 NI PXIe-5605 NI PXIe-5653 Downconverter 20 Hz - 14 GHz 16-Bit IF Digitizer Synthesizer ACCESS ACTIVE ACCESS ACTIVE IF IN REF IN RF IN 10 MHz 0 V DC 5 V p-p MAX +20 dBm MAX >...
  • Page 45 LO-related spurs. You can ignore these offset frequencies to save time during testing. Set the PXIe-5665 center frequency according to the first row in either Table 22 or Table 23. Table 22. PXIe-5665 3.6 GHz VSA Test Frequencies...
  • Page 46 • 11. Set the spectrum analyzer center frequency to the RF source 2 frequency. 12. Set the PXIe-5665 span and resolution bandwidth according to the first row in Table 24. Table 24. LO-Related Spurs Verification Bandwidth and Span Settings PXIe-5665 Notch BW...
  • Page 47 Notched Spectrum. Calculate the Notched Spectrum Response using the following equation: Notched Spectrum Response (dB) = Notched Spectrum (dBm) - PXIe-5665 Tone Power (dBm) Create a list of target spurs from the Notched Spectrum Response (dB) that have a level greater than -90 dB.

  • Page 48: Verifying Image Rejection

    47 MHz. For steps that call for a 50 MHz instantaneous bandwidth, use a 40 MHz instantaneous bandwidth when using the preselector. 24. Close the PXIe-5665 session. If the LO-related spurs (sideband spurs) verification procedure determines that the PXIe-5665 is Worldwide Support and Services outside its limits, refer to for information about support resources or service requests.
  • Page 49 Connect RF source 2 to the PXIe-5665 RF IN using the SMA (m)-to-SMA (m) cable. The completed equipment setup is shown in Figure 17 and Figure 18. Figure 17. PXIe-5665 3.6 GHz VSA Image Rejection Verification Equipment Setup NI PXIe-5622...
  • Page 50 • Preamp Enabled: Disabled • Span: 20 kHz • Resolution Bandwidth: 100 Hz • Device Instantaneous Bandwidth: 40 MHz (25 MHz for the PXIe-5665 with 25 MHz bandwidth) • RF Attenuation: 10 dB • Reference Level: 0 dBm • Preselector Enabled: Enabled (PXIe-5665 14 GHz VSA) 50 | ni.com | PXIe-5665 Calibration Procedure...
  • Page 51 Test Frequency is the PXIe-5665 center frequency. For each image and test frequency in the list from step 7 and the PXIe-5665 center frequency from step 5, set the RF source 2 to the frequency with a Power Setting of 0 dB.
  • Page 52 Wait for 200 ms to allow the PXIe-5665 and RF source 2 amplitudes to settle. Test Settling times are a characteristic of the RF source device. Refer to the Note Equipment section of this document for a list of NI-recommended source devices and device specifications.

  • Page 53: Verifying Third-Order Intermodulation Distortion

    Verifying Third-Order Intermodulation Distortion Frequencies ≤700 MHz Connect RF source 1 and RF source 2 to the PXIe-5665 RF IN connector through the anti-distortion test fixture as shown in Figure 19 and Figure 20. Figure 19. PXIe-5665 3.6 GHz VSA Third-Order Intermodulation Verification ≤...
  • Page 54 Figure 20. PXIe-5665 14 GHz VSA Third-Order Intermodulation Verification (Frequencies ≤700 MHz) Equipment Setup NI-5665 ANTI-DISTORTION ET 166375A INPUT 1 INPUT 2 OUTPUT NI PXIe-5622 NI PXIe-5605 NI PXIe-5653 16-Bit IF Digitizer Downconverter 20 Hz - 14 GHz Synthesizer ACCESS...
  • Page 55 • Preamplifier disabled: -10 dBm • Preamplifier enabled: -30 dBm Configure the PXIe-5665 reference level to one of the following values: • Preamplifier disabled: -10 dBm • Preamplifier enabled: -30 dBm For each test frequency from Table 29, calculate the following four frequencies: IMD Low Frequency = Test Frequency - 1.05 MHz...
  • Page 56 15. Wait 2.5 s before making the first measurement and wait 100 ms before making subsequent measurements to allow the PXIe-5665, RF source 1, and RF source 2 amplitudes to settle. Test Settling times are a characteristic of the RF source device. Refer to the...

  • Page 57: Frequencies >700 Mhz

    Frequencies >700 MHz Connect RF source 1 and RF source 2 to the PXIe-5665 RF IN connector through the anti-distortion test fixture as shown in Figure 21 and Figure 22. Figure 21. PXIe-5665 3.6 GHz VSA Third-Order Intermodulation (Frequencies >700 MHz)
  • Page 58 Figure 22. PXIe-5665 14 GHz VSA Third-Order Intermodulation (Frequencies >700 MHz) Verification Equipment Setup NI-5665 ANTI-DISTORTION ET 166375A INPUT 1 INPUT 2 OUTPUT NI PXIe-5622 NI PXIe-5605 NI PXIe-5653 16-Bit IF Digitizer Downconverter 20 Hz - 14 GHz Synthesizer ACCESS...
  • Page 59 • Preamplifier disabled: -10 dBm • Preamplifier enabled: -30 dBm Configure the PXIe-5665 Reference Level to one the following values: • Preamplifier disabled: -10 dBm • Preamplifier enabled: -30 dBm For each test frequency from Table 32 or Table 33, calculate the following four frequencies: IMD Low Frequency = Test Frequency - 1.05 MHz...
  • Page 60 14. Enable the RF source 1 and RF source 2 outputs. 15. Wait 2.5 s before making the first measurement and wait 100 ms before making subsequent measurements to allow the PXIe-5665, RF source 1, and RF source 1 amplitudes to settle. Test Settling times are a characteristic of the RF source device.
  • Page 61 Refer to the section of this document for more information about as-left limits. † Center frequencies >3.6 GHz apply only to the PXIe-5665 14 GHz VSA. Table 35. TOI (Frequencies >700 MHz) Verification Test Limits (Preamplifier Enabled) Center Frequency As-Found Limit As-Left Limit >700 MHz to 3.6 GHz...

  • Page 62: Verifying Second Harmonic Intercept (Shi)

    Verifying Second Harmonic Intercept (SHI) Connect RF source 1 and RF source 2 to the PXIe-5665 RF IN connector through the anti-distortion test fixture as shown in Figure 23 and Figure 24. Figure 23. PXIe-5665 3.6 GHz VSA SHI Verification Equipment Setup...
  • Page 63 Figure 24. PXIe-5665 14 GHz VSA SHI Verification Equipment Setup NI-5665 ANTI-DISTORTION ET 166375A INPUT 1 INPUT 2 OUTPUT NI PXIe-5622 NI PXIe-5605 NI PXIe-5653 16-Bit IF Digitizer Downconverter 20 Hz - 14 GHz Synthesizer ACCESS ACTIVE ACCESS ACTIVE IF IN...
  • Page 64 • Preamplifier disabled: 0 dBm • Preamplifier enabled: -30 dBm Set the RF source 2 frequency and the PXIe-5665 center frequency to the values shown in the first row of Table 36. Table 36. SHI Verification Test Frequencies Start Frequency...
  • Page 65 Resolution Bandwidth 19. Record either Peak Power (from step 14) or Average Noise Power (from step 17). According to the frequency tuned to with the PXIe-5665, record whichever value is greater as the Fundamental Power or the Harmonic Power. 20. Repeat steps 7 to 19 for the second harmonic, which is twice the test frequency.
  • Page 66 Repeat steps 6 to 21 for test frequencies between 3.8 GHz and (PXIe-5665 14 GHz VSA) 7 GHz with the PXIe-5665 preselector enabled. 24. Repeat steps 6 to 22 for the frequencies in Table 38 with the PXIe-5665 preamplifier enabled. Table 38. SHI Verification Test Frequencies...

  • Page 67: Verifying Gain Compression

    When disabled, the RF source 2 output signal should be less than -60 dBm. Note 27. Close the PXIe-5665 session. If the second harmonic intercept verification procedure determines that the PXIe-5665 is outside Worldwide Support and Services its limits, refer to for information about support resources or service requests.

  • Page 68: Frequencies ≤700 Mhz

    Frequencies ≤700 MHz Connect RF source 1 and RF source 2 to the PXIe-5665 RF IN connector through the anti-distortion test fixture, as shown in Figure 25 and Figure 26. Figure 25. PXIe-5665 3.6 GHz VSA Gain Compression Verification (Frequencies ≤ 700 MHz) Equipment Setup...
  • Page 69 Figure 26. PXIe-5665 14 GHz VSA Gain Compression Verification (Frequencies ≤ 700 MHz) Equipment Setup NI-5665 ANTI-DISTORTION ET 166375A INPUT 1 INPUT 2 OUTPUT NI PXIe-5622 NI PXIe-5605 NI PXIe-5653 16-Bit IF Digitizer Downconverter 20 Hz - 14 GHz Synthesizer...
  • Page 70 11. Set the RF source 1 power to the RF Source 1 Programmed Power in Table 43 or Table 44 as appropriate. 12. Set the PXIe-5665 reference level according to Table 43 or Table 44 as appropriate. Table 43. Gain Compression Verification Test Settings (Preamplifier Disabled)
  • Page 71 16. Depending on your equipment configuration, using the spectrum returned from the PXIe-5665, measure the power at the center frequency and record this value as the Small Tone First Measurement (RF source 1 output disabled) or as the Small Tone Second Measurement (RF source 1 output enabled).
  • Page 72 24. Close the PXIe-5665 session. If the gain compression for frequencies ≤700 MHz verification procedure determines that the Worldwide Support and Services PXIe-5665 is outside its limits, refer to for information about support resources or service requests. 72 | ni.com | PXIe-5665 Calibration Procedure...

  • Page 73: Frequencies >700 Mhz

    Frequencies >700 MHz Connect RF source 1 and RF source 2 to the PXIe-5665 RF IN connector through the anti-distortion test fixture, as shown in Figure 27 and Figure 28. Figure 27. PXIe-5665 3.6 GHz VSA Gain Compression Verification (Frequencies >700 MHz) Equipment Setup...
  • Page 74 Figure 28. PXIe-5665 14 GHz VSA Gain Compression Verification (Frequencies >700 MHz) Equipment Setup NI-5665 ANTI-DISTORTION ET 166375A INPUT 1 INPUT 2 OUTPUT NI PXIe-5622 NI PXIe-5605 NI PXIe-5653 16-Bit IF Digitizer Downconverter 20 Hz - 14 GHz Synthesizer ACCESS...
  • Page 75 Set the RF source 1 frequency 1 MHz above the RF source 2 frequency. 10. Set the PXIe-5665 center frequency according to the values listed in Table 47 or Table 48. 11. Set the RF source 2 power to the RF Source 2 Programmed Power from Table 49 or Table 50 as appropriate.
  • Page 76 13. Set the PXIe-5665 reference level according to Table 49 or Table 50 as appropriate. Table 49. Gain Compression Verification Test Settings (Preamplifier Disabled) Frequency Device Setting Range Limit Value (dBm) PXIe-5665 RF Source 1 801 MHz to As-Found +8.0 3.6 GHz VSA...
  • Page 77 14. Commit the PXIe-5665 settings to hardware. 15. Enable the RF source 2 output and wait 250 ms, or wait 100 ms if the output is already enabled. This wait time allows the PXIe-5665 and RF source 2 amplitudes to settle. Test Settling times are a characteristic of the RF source device.
  • Page 78 17. Depending on your equipment configuration, using the spectrum returned from the PXIe-5665, measure the power at the center frequency and record this value as the Small Tone First Measurement (RF source 1 output disabled) or as the Small Tone Second Measurement (RF source 1 output enabled).

  • Page 79: Verifying Lo Output Power

    Connect the RF source 2 output to the PXIe-5605 RF IN connector using the SMA (m)-to- SMA (m) cable. Connect power sensor A to the PXIe-5605 LO3 OUT connector using the SMA (m)-to- SMA (m) cable. Connect the spectrum analyzer to the PXIe-5605 LO2 OUT connector. PXIe-5665 Calibration Procedure | © National Instruments | 79...
  • Page 80 Connect power sensor B to the PXIe-5605 LO1 OUT connector. The completed setup is shown in Figure 29 and Figure 30. Figure 29. PXIe-5665 3.6 GHz VSA LO Output Power Verification Equipment Setup NI PXIe-5622 NI PXIe-5603 NI PXIe-5653 16-Bit IF Digitizer Downconverter 20 Hz - 3.6 GHz...
  • Page 81 Figure 30. PXIe-5665 14 GHz VSA LO Output Power Verification Equipment Setup NI PXIe-5622 NI PXIe-5605 NI PXIe-5653 Downconverter 20 Hz - 14 GHz 16-Bit IF Digitizer Synthesizer ACCESS ACTIVE ACCESS ACTIVE IF IN REF IN RF IN 10 MHz...
  • Page 82 9.0 to 10.0 >7.0 9.0 to 10.0 20. Close the PXIe-5653 session. If the LO output power verification procedure determines that the PXIe-5665 is outside its limits, Worldwide Support and Services refer to for information about support resources or service requests.

  • Page 83: Reverification

    Stop (MHz) Rejection ≤940 >940 ≤1,470 1,150 >1,470 ≤2,300 1,800 >2,300 ≤3,600 2,530 >3,600 ≤5,060 3,550 >5,060 ≤7,100 4,985 >7,100 ≤9,970 7,000 >9,970 ≤14,000 Rejection equals Fundamental Power - Second Harmonic Power PXIe-5665 Calibration Procedure | © National Instruments | 83...

  • Page 84: Appendix B: Power Sensor Calibration Factor Uncertainty

    300 MHz to 400 MHz ≤0.60 500 MHz to 1 GHz ≤0.50 2 GHz to 4 GHz ≤0.60 5 GHz ≤0.75 6 GHz ≤0.80 7 GHz ≤0.85 8 GHz ≤0.90 9 GHz ≤0.95 10 GHz ≤1.00 84 | ni.com | PXIe-5665 Calibration Procedure...

  • Page 85: Worldwide Support And Services

    NI product. Refer to the Export Compliance Information at ni.com/legal/export-compliance for the National Instruments global trade compliance policy and how to obtain relevant HTS codes, ECCNs, and other import/export data. NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR ANY ERRORS.

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