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This topic contains information for calibrating the National Instruments PXIe-6570 using Calibration Executive.
Calibration Executive Procedure Features:
||Selectable Test Points
Approximate Test Time:
|Verify and Adjust
|Test Equipment|||||Test Conditions|||||Device Setup|||||Timing Calibration Setup|||||DC Calibration Setup|||||Switch Maintenance|||||Test Limit Equations|
The following table lists the test equipment required for calibrating the PXIe-6570.
|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,
|Contact National Instruments and reference NI P/N 540163A-020|
|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)
|Timing Accuracy||See instructions below for connection details|
USB cable with ferrites
|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).|
The following setup and environmental conditions are required to ensure the PXIe-6570 meets published specifications.
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.
|Note Be sure to save the screws and put them back into the PXIe-6570 front panel when you are finished with timing calibration.|
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.
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.
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