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NI PXIe-6672 Calibration Procedure
8
ni.com
b.
Call niSync Measure Frequency VI to measure the frequency of
the oscillator.
c.
Call niSync Close VI to close the session handle.
4.
Compare the measured frequency to the device specifications.
To determine if the device under test meets its specifications, you must
compare the measured frequency obtained in Step 3 of
with the specified accuracy. Table 1 shows the frequency range
that is acceptable according to the published specifications for the
NI PXIe-6672.
LabVIEW Block Diagram
NI-SYNC C Function Call
Call
niSync_MeasureFrequency
with
the following parameters:
vi
:
“<
SessionHandle>”
sourceTerminal
:
NISYNC_VAL_OSCILLATOR
duration
:
0.5
actualDuration
:
*actualDuration
measuredFrequency
:
*measuredFrequency
error
:
*error
LabVIEW Block Diagram
NI-SYNC C Function Call
Call
niSync_close
with the following
parameter:
vi
:
“<
SessionHandle>”