NI PXIe-4154 Calibration Procedure
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© National Instruments Corporation
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23
The test passes if the
Transient Response Dip
and
Transient Response Recovery Time
measurements fall within the limits listed on Table 16.
Adjustment
Following the adjustment procedure automatically updates the calibration date and temperature
on the NI PXIe-4154.
Note
NI recommends a complete adjustment of your device to renew the
calibration interval. However, if all verification steps were successful and you do not
want to perform an adjustment, you can update the calibration date and onboard
calibration temperature without making any adjustments by calling only the
niDCPower Initialize External Calibration VI or the
niDCPower_InitExtCal
function and the niDCPower Close External Calibration VI or
niDCPower_CloseExtCal
function with the action of
Commit
.
Adjustment corrects the following NI PXIe-4154 specifications:
•
Voltage programming accuracy
•
Current programming accuracy
•
Voltage measurement accuracy
•
Current measurement accuracy
•
Output resistance accuracy
The adjustment components of the NI-DCPower API require the NI PXIe-4154 be programmed
using the voltage output function (this is the default configuration). You must adjust each range
with a separate call to an niDCPower Cal Adjust VI or function.
Note
Do not use the NI-DCPower Soft Front Panel (SFP) to request test points for
any adjustment functions.
Adjustment should be performed under the following conditions:
•
Adherence to the guidelines listed in the
Test Conditions
section.
•
Ambient room temperature should be kept at 23±1°C during adjustment.
•
Close all calibration sessions before setting the necessary parameters.
Table 16.
NI PXIe-4154
Transient Response Verification Limits
Channel
Transient
Response
Speed
Measured
Transient
Response
Dip Limit
Transient
Response
Recovery
Time Limit
Transient
Response
Dip
Transient
Response
Recovery
Time
0
Fast
70 mV
20 µs
