©
National Instruments Corporation
39
NI PXI-4070 Calibration Procedure
•
paramID
=
ND_COUNT_1
•
paramValue
=
10e6
10. Call
GPCTR_Change_Parameter
with the following parameters:
•
deviceNumber
=
the device number of the NI 6608 assigned
by MAX
•
gpctrNum
=
ND_COUNTER_0
•
paramID
=
ND_COUNT_2
•
paramValue
=
10e6
11. Call
GPCTR_Control
with the following parameters:
•
deviceNumber
=
the device number of the NI 6608 assigned
by MAX
•
gpctrNum
=
ND_COUNTER_0
•
action
=
ND_PROGRAM
12. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.
13. Call
GPCTR_Control
with the following parameters:
•
deviceNumber
=
the device number of the NI 6608 assigned
by MAX
•
gpctrNum
=
ND_COUNTER_0
•
action
=
ND_RESET
14. Repeat steps 8 through 13 with the following modification: in steps 9
paramValue
to
500
when you call the function
GPCTR_Change_Parameter
.
15. Repeat steps 8 through 13 with the following modification: in steps 9
paramValue
to
20
when you call the function
GPCTR_Change_Parameter
.
16. Call
niDMM_close
to close the verification session.
You have completed verifying the frequency of the NI 4070. If you are
performing a post-adjustment verification, go to the
section.
Adjustment Procedures
This section explains how to adjust the NI 4070. You can choose to
perform these adjustment procedures with or without performing the
verification procedures first.
The parameters
Range
,
Resolution
,
Expected Measurement
, and
Frequency
used in function calls in this section have floating point values.
