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PXIe-6570 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-6570 using Calibration Executive.

Calibration Executive Procedure Features:

Adjustment

Supported
Manual Mode

Supported
Selectable Test Points

Unsupported

Approximate Test Time:

Warmup
30 minutes
Verify Only
40 minutes
Adjust Only
35 minutes
Verify and Adjust
115 minutes
Test Equipment|Test Conditions|Device Setup|Timing Calibration Setup|DC Calibration Setup|Switch Maintenance|Test Limit Equations

Test Equipment

The following table lists the test equipment required for calibrating the PXIe-6570.

Instrument Recommended
Model
Specifications Requirements
SMU (2 channels) PXIe-4143 DC Accuracy
Power Supply PXI-4110 Timing Accuracy Programmable source, 3.3 V, 60 mA
DMM PXI-4071 DC Accuracy 7.5 digits voltage
NI 6570 DC Calibration Fixture DC Accuracy,
Timing Accuracy
Contact National Instruments and reference NI P/N 540163A-020
Switch PXIe-2529 DC Accuracy
Digitizer PXIe-5162 (4 CH) Timing Accuracy
Reference Clock PXIe-6674T Timing Accuracy 10 MHz reference clock
Accuracy: ±80 ppb
Timing Calibration Fixture* Timing Accuracy Contact National Instruments and reference NI P/N 143198A-01L
Timing Calibration Fixture Cabling 12-inch SMA Cables (x2):
NI P/N 763777-01

SMA(f)-to-BNC(m) Adapters (x2)

Cable Ferrite

SMA-to-SMB Cable

Timing Accuracy See instructions below for connection details
I2C Controller USB-8452

USB cable with ferrites

Timing Accuracy
VHDCI-to-VHDCI 68-pin Cable SHC68-C68-D4, NI P/N 152870-01 DC Accuracy 3 GHz
* Note that the timing calibration fixture is sensitive to electrostatic discharge (ESD).

Test Conditions

The following setup and environmental conditions are required to ensure the PXIe-6570 meets published specifications.

  • Keep connections to the device 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, are secure.
  • Use shielded VHDCI cables when connecting to the PXIe-6570 front panel.
  • Maintain an ambient temperature of 23 ±5 °C. The device temperature will be greater than the ambient temperature.
  • The ambient temperature variation during adjustment and final verification must be within ±1 °C.
  • Keep relative humidity below 80%.
  • Allow recommended warm-up time for all of the instruments and equipment according to the manufacturer instructions.
  • Use a torque wrench appropriate for the type of RF connector that you are using. NI recommends a 0.565 N · m (5 lb · in.) wrench for SMA connectors and an 0.90 N · m (8 lb · in.) wrench for 3.5 mm connectors.
  • Ensure that the PXI Express chassis fan speed is set to HIGH, the fan filters are removed, and the empty slots contain PXI chassis slot blockers and filler panels. For more information, refer to the Maintain Forced-Air Cooling Note to Users document available at ni.com/manuals.

Device Setup

  1. Install the PXIe-6570 in the chassis according to the instructions in the PXIe-6570 Getting Started Guide.
  2. Configure the hardware using Measurement & Automation Explorer (MAX).
  3. Launch the Calibration Executive procedure and complete the setup wizard.

Timing Calibration Setup

Connect the USB-8452 I2C controller and PXI-4110 DC power supply to the timing calibration fixture as shown in the following diagram. The cabling to connect the components is described. You will need to remove 3 of the 4 screws from the PXIe-6570 front panel so the timing calibration fixture can be screwed into the PXIe-6570.

NoteNote  Be sure to save the screws and put them back into the PXIe-6570 front panel when you are finished with timing calibration.
Timing Calibration Setup

DC Calibration Setup

The DC calibration of the PXIe-6570 uses an NI 2529 switch connected to a custom fixture that is used to properly route the signals from the PXIe-6570 and to each of the standards used during calibration. Refer to the Switch Maintenance section for details on properly maintaining the NI 2529 switch. When prompted by Calibration Executive, connect the fixture to the instruments and device as shown in the following diagram. Ensure that you have the banana cables connected to the correct DMM that you selected during setup.

DC Calibration Setup

Switch Maintenance

To ensure proper operation of the switches used in this procedure, you must periodically test the performance of your switch. Refer to the NI 2503/2529 Switch Performance Test for instructions on validating the performance of the NI 2529 used in this procedure.

Test Limit Equations

The following as-found test limits are derived from the published specifications. The as-left test limits are guard-banded according to manufacturer requirements.

Timing Accuracy Under Calibration Conditions*

* The as-found timing accuracy limits are tighter than the published specifications to account for differences in the calibration conditions and methodology. Using these limits ensures that the PXIe-6570 will meet the published specifications when used in customer applications.

Comparator Voltage Level Accuracy Verification Limit = Test Value ±25 mV

Driver Voltage Level Accuracy Limit = Test Value ±15 mV

PPMU Force Current Accuracy Limit = Test Value ±(Current Range * 1%)

PPMU Force Voltage Accuracy Limit = Test Value ±15 mV

PPMU Measure Current (Zone 1) Accuracy Limit = -1 * (SMU Current Reading) ±(Current Range * 1%)

PPMU Measure Current (Zone 2) Accuracy Limit = -1 * (SMU Current Reading) ±(Current Range * 1.5%/1%)†, ‡

 Use 1% for the 1.25 V test points, and 1.5% for all others.

 For test limits that are set based on the SMU Current Reading or the DMM reading, the actual reading used to set the limits can be determined by calculating the mid-point between the upper and lower limit.

PPMU Measure Voltage Accuracy Limit = (DMM Reading) ±5 mV


 

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