National Instruments PXIe-5673 Calibration Procedure

Vector signal generator

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CALIBRATION PROCEDURE

PXIe-5673

Vector Signal Generator

This document contains the verification procedures for the PXIe-5673 Vector Signal Generator.

Refer to

ni.com/calibration

Contents

Software.................................................................................................................................... 2

Documentation.......................................................................................................................... 2

Calibration Interval................................................................................................................... 2

Test Equipment......................................................................................................................... 3

Test Conditions......................................................................................................................... 4

Initial Setup............................................................................................................................... 5

Test System Characterization ................................................................................................... 5

Characterizing the Power Splitter..................................................................................... 5

As-Found and As-Left Limits................................................................................................... 8

Verification ............................................................................................................................... 8

Verifying LO Output Power Accuracy............................................................................. 9

Verifying Modulation Impairments.................................................................................. 9

Verifying Modulation Bandwidth and Impairments ........................................................ 11

Verifying Output Power Level Accuracy ......................................................................... 14

Verifying Output Intermodulation Products..................................................................... 18

Verifying Noise Floor....................................................................................................... 20

Verifying RF Harmonics .................................................................................................. 22

Verifying Baseband Linearity-Related Spurs................................................................... 23

Verifying Single Sideband Phase Noise at 10 kHz Offset ............................................... 25

Verifying Frequency Accuracy ........................................................................................ 26

Adjustment................................................................................................................................ 27

Reverification ........................................................................................................................... 27

Updating Calibration Date........................................................................................................ 28

Worldwide Support and Services ............................................................................................. 28

for more information about calibration solutions.

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Page 1: Table Of Contents
CALIBRATION PROCEDURE PXIe-5673 Vector Signal Generator This document contains the verification procedures for the PXIe-5673 Vector Signal Generator. Refer to for more information about calibration solutions. ni.com/calibration Contents Software............................ 2 Documentation.......................... 2 Calibration Interval........................2 Test Equipment......................... 3 Test Conditions......................... 4 Initial Setup..........................
Page 2: Software
The measurement accuracy requirements of your application determine how often you should calibrate your device. NI recommends that you perform a complete calibration for the PXIe-5673 at least once a year. You can shorten this calibration interval based on the accuracy demands of your application.
Page 3: Test Equipment
Frequency range: an MA2472 diode Output power level 50 MHz to 6.6 GHz sensor accuracy Power range: -70 dBm to +10 dBm Accuracy: 0.5% SMA(m)-to-N(f) S.M. Electronics VSWR: 1.15:1 adapter SM4241 PXIe-5673 Calibration Procedure | © National Instruments | 3...
Page 4: Test Conditions
— — (1 N · m) Test Conditions The following setup and environmental conditions are required to ensure the PXIe-5673 meets published specifications. • Verify that the PXIe-5611, PXIe-5450, and PXI-5650/5651/5652 are properly connected as indicated in the NI RF Signal Generators Getting Started Guide before starting verification.
Page 5: Initial Setup
Generate a tone with the PXI-5650/5651/5652 with the following niRFSG property settings: • Frequency (Hz): 85 MHz • Power Level (dBm): -10 dBm Use the power meter to measure the output power. PXIe-5673 Calibration Procedure | © National Instruments | 5...
Page 6 Connect the other output port of the power splitter to a 6 dB attenuator. Label this port B. 10. Connect the other port of the 6 dB attenuator to the spectrum analyzer RF INPUT front panel connector through the SMA(m)-to-SMA(m) cable as shown in Figure 1. 6 | ni.com | PXIe-5673 Calibration Procedure...
Page 7 • PXI-5650: 85 MHz to 1.3 GHz • PXI-5651: 85 MHz to 3.3 GHz • PXI-5652: 85 MHz to 6.6 GHz Store the resulting measurements as splitter [i] (dB). PXIe-5673 Calibration Procedure | © National Instruments | 7...
Page 8: As-Found And As-Left Limits
PXIe-5673 meets the device specifications when it is received for calibration. The as-left limits are equal to the published NI specifications for the PXIe-5673 less guard bands for measurement uncertainty, temperature drift, and drift over time. NI uses these limits to determine whether the PXIe-5673 meets the device specifications over its calibration interval.
Page 9: Verifying Lo Output Power Accuracy
Verifying LO Output Power Accuracy Complete the following steps to verify the LO output power accuracy of the PXIe-5673 module using a power meter. Connect the PXIe-5611 LO OUT front panel connector to the power meter through the SMA(m)-to-N(f) adapter.
Page 10 Center frequency: Equivalent to the frequency in step 5 • Reference level: +5 dBm • Frequency span: 0 Hz • Resolution bandwidth: 500 Hz • Sweep time: 5 ms • Reference clock source: External 10 | ni.com | PXIe-5673 Calibration Procedure...
Page 11: Verifying Modulation Bandwidth And Impairments
Connect the PXIe-5611 RF OUT front panel connector to the spectrum analyzer RF INPUT front panel connector through the SMA(m)-to-SMA(m) cable. Connect the PXIe-5450 CLK IN front panel connector to any rubidium frequency reference rear panel BNC connector through the BNC(m)-to-SMA(m) cable. PXIe-5673 Calibration Procedure | © National Instruments | 11...
Page 12 10. Calculate the relative modulation bandwidth flatness by subtracting the RF output power measured at 0 Hz offset from the RF output powers measured at each of the other offset frequencies. 12 | ni.com | PXIe-5673 Calibration Procedure...
Page 13 200 MHz 1.3 GHz PXI-5651/5652 2.4 GHz 3.3 GHz PXI-5652 4.0 GHz 5.8 GHz If the results are within the selected test limit, the device has passed this portion of the verification. PXIe-5673 Calibration Procedure | © National Instruments | 13...
Page 14: Verifying Output Power Level Accuracy
Verifying Output Power Level Accuracy Complete the following steps to verify the output power level accuracy of the PXIe-5673 using a power meter, rubidium frequency standard, spectrum analyzer, power splitter, and 6 dB attenuator. Figure 2. Connecting Hardware to Verify Output Power Level Accuracy...
Page 15 Measurements must be adjusted to account for the splitter loss stored in the Note Characterizing the Power Splitter section, as shown in the following equation. Measurement = power meter reading [i] + splitter loss [i] PXIe-5673 Calibration Procedure | © National Instruments | 15...
Page 16 Center frequency: (Frequency in step 8) + 1 MHz • Reference level: -30 dBm • Frequency span: 0 Hz • Resolution bandwidth: 500 Hz • Sweep time: 20 ms • Reference clock source: External • Attenuation: 5 dB • Preamplifier: On 16 | ni.com | PXIe-5673 Calibration Procedure...
Page 17 As-Left Limit (dB) ±0.75 ±0.55 ±0.75 ±0.55 ±0.75 ±0.55 ±0.75 ±0.55 ±0.75 ±0.55 ±0.75 ±0.55 If the results are within the selected test limit, the device has passed this portion of the verification. PXIe-5673 Calibration Procedure | © National Instruments | 17...
Page 18: Verifying Output Intermodulation Products
Complete the following steps to verify the output intermodulation (IMD) performance of an PXIe-5673 using a spectrum analyzer. Complete this test for each iteration in Table 8. Connect the PXIe-5611 RF OUT front panel connector to the spectrum analyzer RF INPUT front panel connector through the SMA(m)-to-SMA(m) cable.
Page 19 13. Repeat steps 5 through 12 for the following frequency ranges in 250 MHz increments, including endpoints: • PXI-5650: 85 MHz to 1.3 GHz • PXI-5651: 85 MHz to 3.3 GHz • PXI-5652: 85 MHz to 6.6 GHz Store the resulting measurements. PXIe-5673 Calibration Procedure | © National Instruments | 19...
Page 20: Verifying Noise Floor
>3.3 GHz to 6.6 GHz Verifying Noise Floor Complete the following steps to verify the noise floor performance of an PXIe-5673 module using a spectrum analyzer. Connect the PXIe-5611 RF OUT front panel connector to the spectrum analyzer RF INPUT front panel connector through the SMA(m)-to-SMA(m) cable.
Page 21 -145 dBm/Hz -145 dBm/Hz -145 dBm/Hz -152 dBm/Hz -152 dBm/Hz -152 dBm/Hz -152 dBm/Hz If the results are within the selected test limit, the device has passed this portion of the verification. PXIe-5673 Calibration Procedure | © National Instruments | 21...
Page 22: Verifying Rf Harmonics
Verifying RF Harmonics Complete the following steps to verify the harmonic performance of an PXIe-5673 module using a spectrum analyzer. Connect the PXIe-5611 RF OUT front panel connector to the spectrum analyzer RF INPUT front panel connector through the SMA(m)-to-SMA(m) cable.
Page 23: Verifying Baseband Linearity-Related Spurs
If the results are within the selected test limit, the device has passed this portion of the verification. Verifying Baseband Linearity-Related Spurs Complete the following steps to verify the baseband-related spur levels of the PXIe-5673 using a spectrum analyzer. Connect the PXIe-5611 RF OUT front panel connector to the spectrum analyzer RF INPUT front panel connector through the SMA(m)-to-SMA(m) cable.
Page 24 10. Repeat steps 5 through 9 for the following frequency ranges in 200 MHz increments, including endpoints: • PXI-5650: 85 MHz to 1.3 GHz • PXI-5651: 85 MHz to 3.3 GHz • PXI-5652: 85 MHz to 6.6 GHz Store the resulting measurements. 24 | ni.com | PXIe-5673 Calibration Procedure...
Page 25: Verifying Single Sideband Phase Noise At 10 Khz Offset
If the results are within the selected limit, the device has passed this portion of the verification. Verifying Single Sideband Phase Noise at 10 kHz Offset Complete the following steps to verify the single sideband (SSB) phase noise of the PXIe-5673 using a spectrum analyzer.
Page 26: Verifying Frequency Accuracy
If the results are within the selected test limit, the device has passed this portion of the verification. Verifying Frequency Accuracy Complete the following steps to verify the frequency accuracy of an PXIe-5673 using a spectrum analyzer. Connect the PXIe-5611 RF OUT front panel connector to the spectrum analyzer RF INPUT front panel connector through the SMA(m)-to-SMA(m) cable.
Page 27: Adjustment
If the results are within the selected test limit, the device has passed this portion of the verification. Adjustment To adjust the PXIe-5673 to meet published specifications, you must adjust the modules that comprise the PXIe-5673 system. To calibrate the PXI-5650/5651/5652, PXIe-5450, and PXIe-5611 modules individually, refer to their calibration procedures at ni.com/manuals...
Page 28: Updating Calibration Date
For patents covering NI products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patents Notice at ni.com/patents. You can find information about end-user license agreements (EULAs) and third-party legal notices in the readme file for your NI product.

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