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NI 5412 Calibration Procedure
Verifying the Oscillator Frequency Accuracy
This test verifies the frequency accuracy of the oscillator on the NI 5412. The verification
involves generating a 10 MHz sine wave with the NI 5412 and measuring the sine wave
frequency with one of the instruments from Table 2.
To verify the frequency accuracy of the oscillator on the NI 5412, complete the following steps:
1. Connect the NI 5412 CH 0 front panel connector to the instrument measuring the frequency
accuracy with a male BNC to female SMB cable.
2. Call
niFgen_init
(niFgen Initialize VI) using the following parameters:
•
resourceName
: The name of the device that you want to verify. You can find this
name under Devices and Interfaces in MAX.
•
IDQuery
:
VI_TRUE
•
resetDevice
:
VI_TRUE
•
vi
: A pointer to a ViSession. The variable passed by reference through this parameter
receives the value that identifies the session created by this function. This value acts
as the session handle and is passed as the first parameter to all subsequent NI-FGEN
functions.
3. Call
niFgen_SetAttributeViReal64
to set the sample rate (niFgen property node:
Arbitrary Waveform Output»Sample Rate
) using the following parameters:
•
vi
: The session handle returned from
niFgen_init
•
channelName
:
"0"
•
attributeID
:
NIFGEN_ATTR_ARB_SAMPLE_RATE
•
value
:
100000000
4. Call
niFgen_SetAttributeViReal64
to set the gain (niFgen property node:
Arbitrary Waveform Output»Arbitrary Waveform Gain
) using the following
parameters:
•
vi
: The session handle returned from
niFgen_init
•
channelName
:
"0"
•
attributeID
:
NIFGEN_ATTR_ARB_GAIN
•
value
:
1
Note
You can adjust the gain value based on which measuring device you use.
5. Call
niFgen_SetAttributeViReal64
to set the offset (niFgen property node:
Arbitrary Waveform Output»Arbitrary Waveform Offset
) using the following
parameters:
•
vi
: The session handle returned from
niFgen_init
•
channelName
:
"0"
•
attributeID
:
NIFGEN_ATTR_ARB_OFFSET
•
value
:
0
