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National Instruments Corporation
39
NI PXI-4070 Calibration Procedure
9.
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_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.