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PXIe-5645R Calibration Procedure

Calibration Executive 4.0 Help

Edition Date: March 2017

Part Number: 374564H-01

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This topic contains information for calibrating the National Instruments PXIe-5645R using Calibration Executive.

Calibration Executive Procedure Features:

Adjustment

Supported
Adjustment Only

Supported
Optional Adjustment

Supported
Manual Mode

Supported
Selectable Test Points

Unsupported

Approximate Test Time:

Verify OnlyVerify & AdjustAdjust Only
70 minutes240 minutes100 minutes
Test Equipment| Test Conditions| Device Setup| Test Limit Equations

Test Equipment

The following tables list the test equipment required for calibrating PXIe-5645R modules.

InstrumentRecommended
Model
Where UsedRequirements
Frequency reference Symmetricom 8040 Rubidium Frequency Standard Verifications
  • Internal frequency reference
  • Nonharmonic spurs
  • Spectral purity
  • IMD3
  • IMD2
  • Output noise density
  • Output second harmonics

Adjustments:

  • Absolute amplitude accuracy
  • Output power level accuracy
Frequency: 10 MHz

Frequency accuracy: ≤ ±1E-9

Output mode: sinusoid

(2x) Power sensor Rohde & Schwarz NRP-Z91 with NRP-Z4 USB adapter Test RF and I/Q system characterization

Verifications:

  • Absolute amplitude accuracy
  • Frequency response
  • Output power level accuracy
  • LO OUT (RF IN 0 and RF OUT 0)
  • I/Q verifications

Adjustments:

  • Absolute amplitude accuracy
  • Output power level accuracy
  • LO OUT (RF IN 0 and RF OUT 0)
  • I/Q adjustments
Range: -67 dBm to +23 dBm

Frequency range: 65 MHz to 6 GHz

Accuracy: ≤0.5%

VSWR: <1.2:1 at 6 GHz

Vector signal generator PXIe-5673E (NI 5673) Test system characterization

Verifications

  • Internal frequency reference
  • Absolute amplitude accuracy
  • Frequency response
  • Input nonharmonic spurs
  • Input IMD3
  • Input EVM
  • Input IMD2

Adjustments:

  • Internal frequency reference
  • Absolute amplitude accuracy
  • LO OUT (RF IN 0 and RF OUT 0)
Frequency range: 65 MHz to 6 GHz

Frequency resolution: <5 Hz

Amplitude range: -70 dBm to 5 dBm

Instantaneous bandwidth: 50 MHz

Spectrum analyzer or vector signal analyzer PXIe-5665 (NI 5665) Test system characterization

Verifications:

  • Spectral purity
  • Output power level accuracy
  • Output frequency response
  • Output noise density
  • Output second harmonics
  • Output nonharmonic spurs
  • Output IMD3
  • Output EVM

Adjustments:

  • Output power level accuracy
Frequency range: 65 MHz to 12 GHz

Instantaneous bandwidth: 50 MHz

Phase noise at 20 kHz offset: <-125 dBm/Hz

Preamplifier PXI-5691 (NI 5691) Output noise density verification Frequency range: 65 MHz to 12 GHz

Noise floor at 6 GHz: <-158 dBm/Hz

Instantaneous bandwidth: 50 MHz

Phase noise at 20 kHz offset: <-125 dBm/Hz

(2x) calibration fixtures;
one for verifications,
one for adjustments
PXIe-5645R I/Q Calibration Fixture (calibration fixture), 782452-01 I/Q test system characterization

I/Q verifications

I/Q adjustments

Source measure unit (SMU) PXI-4130 (NI 4130) I/Q test system characterization

I/Q verifications

I/Q adjustments

DC voltage: 6 V

DC current: 2A

Relay driver PXI-2567 (NI 2567) I/Q test system characterization

I/Q verifications

I/Q adjustments

DMM PXI-4072 (NI 4072) I/Q test system characterization

I/Q verifications

I/Q adjustments

Digits of precision: 6½
Power splitter Aeroflex/Weinschel 1593 Test system characterization

Verifications:

  • Frequency response
  • Absolute amplitude accuracy
  • Output power level accuracy

Adjustments:

  • Absolute amplitude accuracy
  • Output power level accuracy
VSWR: ≤1.25:1 at 18 GHz

Amplitude tracking: <0.25 dB

(2x) 6 dB attenuators Anritsu 41KB-6 or Mini-Circuits Test system characterization

Verifications:

  • Frequency response
  • Absolute amplitude accuracy
  • Output power level accuracy

Adjustments:

  • Absolute amplitude accuracy
  • Output power level accuracy
Frequency range: DC to 6 GHz

VSWR: ≤1.1:1

50 Ω SMA terminator Test system characterization

Average noise density verification

Frequency range: DC to 6 GHz

VSWR: ≤1.1:1

SMA (m)-to-SMA (m) cable All procedures Frequency range: DC to 6 GHz

Impedance: 50 Ω

SMA (m)-to-N (f) adapter Huber+Suhner 32_SMA_N-50-1/1-_UE Test system characterization

Verifications:

  • Frequency response
  • Absolute amplitude accuracy
  • Output power level accuracy
  • LO OUT (RF IN 0 and RF OUT 0)

Adjustments:

  • Absolute amplitude accuracy
  • Output power level accuracy
  • LO OUT (RF IN 0 and RF OUT 0)
Frequency range: DC to 6 GHz

Impedance: 50 Ω

Return loss: ≥23 dB

SMA (f)-to-N (f) adapter Huber+Suhner 31_N-SMA-50-1/1-_UE Test system characterization Frequency range: DC to 6 GHz

Impedance: 50 Ω

Return loss: ≥23 dB

3.5 mm (m)-to-3.5 mm (m) adapter Huber+Suhner 32_Pc35-50-0-2/199_NE Test system characterizations

Verifications:

  • Frequency response
  • Absolute amplitude accuracy
  • Output power level accuracy

Adjustments:

  • Absolute amplitude accuracy
  • Output power level accuracy
Frequency range: DC to 6 GHz

Impedance: 50 Ω

Return loss: ≥30 dB

(8x) MCX (m)-to-SMA (m) cables 188377-01 I/Q test system characterization

I/Q verifications

I/Q adjustments

Frequency range: DC to 6 GHz

Impedance: 50 Ω

Note Note  All eight MCX cables used to connect the I/Q Calibration Fixture to the PXIe-5645 must be the same length and specifications, including any adapters used. If different cables are used, the API will report out-of-bounds errors during characterization.
78-pin DSUB cable Included with relay driver module I/Q test system characterization

I/Q verifications

I/Q adjustments

(2x) SMA (m)-to-N (f) adapter Huber+Suhner 32_SMA_N-50-1/1-_UE I/Q test system characterization

I/Q verifications

I/Q adjustments

Frequency range: DC to 6 GHz

Impedance: 50 Ω

Return loss: ≥23 dB

(3x) MCX terminations Johnson Components 133-3801-801 I/Q test system characterization

I/Q verifications

I/Q adjustments

Impedance: 50 Ω

Frequency range: DC to 1 GHz

Test Conditions

The following setup and environmental conditions are required to ensure the PXIe-5645R meets published specifications.

  • Keep cabling as short as possible. Long cables and wires act as antennas, picking up extra noise that can affect measurements.
  • Verify that all connections, including front panel connections and screws, are secure.
  • Maintain an ambient temperature of 23 °C ± 5 °C.
  • Keep relative humidity between 10% and 90%, noncondensing.
  • Allow a warm-up time of at least 30 minutes after the chassis is powered on and the PXIe-5644R/5645R Instrument Design Libraries software is loaded and recognizes the PXIe-5645R. The warm-up time ensures that the PXIe-5645R and test instrumentation are at a stable operating temperature.
  • Ensure that the chassis fan speed is set to HIGH, that the fan filters, if present, are clean, and that the empty slots contain filler panels. For more information about cooling, refer to the Maintain Forced-Air Cooling Note to Users document available at ni.com/manuals.
  • Ensure the DMM has been self-calibrated according to manufacturer's specifications.
Note Note  Do not connect power to the I/Q Calibration Fixture until you are ready to begin the I/Q portion of calibration. In addition, keep the I/Q fixture away from any heat sources such as your chassis.

Device Setup

To set up the PXIe-5645R for calibration, complete the following steps:

  • Install the PXIe-5645R in the PXI Chassis according to the instructions in the NI PXIe-5645R Getting Started Guide.
  • Configure the hardware using Measurement & Automation Explorer (MAX). Refer to the Measurement & Automation Explorer Help for DAQ for more configuration information.
  • Launch the Calibration Executive procedure. Calibration Executive guides you through the required connections.
Note Note  If you run the PXIe-5645R on a 32-bit machine, it is recommended that you enable the Windows setting that expands the available user mode address space to 3 GB. Failure to do this may result in out-of-memory errors. To enable the Windows setting, open the command prompt and issue the following command:

bcdedit/set IncreaseUserVA 3072

Caution Caution  Using this command incorrectly can render your computer inoperable. Refer to Microsoft documentation on the BCDEdit /set command for more details. This command reduces the kernel address space available for Windows from 2 GB to 1 GB.

Test Limit Equations

The following test limits are derived from the published specifications.

Frequency Reference Accuracy

Limit = (Initial Value + Temperature Stability) + 1ppm * (# years since last adjustment)

 

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