National Instruments PXIe-6674T, Calibration Procedure

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8 | ni.com | NI PXIe-6674T Calibration Procedure
c. Call niSync Close VI to close the session handle.
Proceed with the following steps to find the correct oscillator control voltage.
2. After setting the control voltage, measure the frequency again with the NI-Sync Measure
Frequency VI, as shown in step 1 of the Measuring the Frequency section.
3. Compare the measured frequency to the device specifications.
4. If the measured frequency is still outside of the specified limit, repeat steps 1 to 3 of the
Adjustment section until the measured value falls within the acceptable frequency range for
your module, as shown in Table 3, Adjustment Target Frequency Ranges . Adjust the
oscillator control voltage up to increase the frequency and down to decrease the frequency.
5. Commit the calibration values to the Calibration EEPROM using the following procedure.
a. Call niSync Initialize External Calibration VI to initialize the process.
Note
NI is the default user password. If you have changed the calibration
password, use your user-selected calibration password in place of
NI
.
LabVIEW Block Diagram NI-SYNC C Function Call
Call
niSync_close
with the
following parameter:
vi
: “ < SessionHandle > ”
LabVIEW Block Diagram NI-SYNC C Function Call
Call
niSync_InitExtCal
with the
following parameters:
resourceName
: “ < MAX ID > ”
password :
NI
calibrationInstrumentHandle
:
*
SessionHandle