©
National Instruments Corporation
33
NI 5622 Calibration Procedure
12. Calculate the error in timing as parts per million (ppm) using the
following formula:
where
a
is the measured frequency.
Compare the result to the
Published Specification
listed in Table 6. If
the result is within the selected test limit, the device has passed this
portion of the verification.
13. End the session using the niScope Close VI.
You have finished verifying the timing accuracy for the NI 5622.
LabVIEW VI
C/C++ Function Call
Call
niScope_close
with the following
parameter:
vi
: The instrument handle from
niScope_init
Table 6.
NI 5622 Timing Accuracy Specification Limit
Input Frequency
Specification
11 MHz
5 ppm
error
a
11 000 000
,
,
–
(
)
11
-------------------------------------------
=
