NI 5421, Calibration Procedure

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10 | ni.com | NI 5421/5441 Calibration Procedure
6. Call
niFgen_SetAttributeViBoolean
to set the analog filter state (NI-FGEN
Analog Filter Enabled property) using the following parameters:
•
vi : The session handle returned from
niFgen_init
• channelName :
"0"
• attributeID :
NIFGEN_ATTR_ANALOG_FILTER_ENABLED
• value :
VI_TRUE
7. Call
niFgen_SetAttributeViBoolean
to set the digital filter state (NI-FGEN Digital
Filter Enabled property) using the following parameters:
•
vi : The session handle returned from
niFgen_init
• channelName :
"0"
• attributeID :
NIFGEN_ATTR_DIGITAL_FILTER_ENABLED
• value :
VI_TRUE
8. Call
niFgen_SetAttributeViReal64
to set the digital filter interpolation factor
(NI-FGEN Digital Filter Interpolation Factor property) using the following parameters:
•
vi : The session handle returned from
niFgen_init
• channelName :
"0"
• attributeID :
NIFGEN_ATTR_DIGITAL_FILTER_INTERPOLATION_FACTOR
• value :
4
9. Generate an array of waveform samples. Each waveform should have 10 samples per cycle
with a total of 500 samples and 50 sine wave cycles. Because you set the sample rate to 100
MS/s and use 10 samples per cycle, the resulting waveform is a 10 MHz sine wave.
Note
The sample values of this waveform must fall between -1.0 and 1.0.
10. (LabVIEW Only) You must call the Sine Pattern VI to create the array of waveform
samples for step 9. Specify 500 samples , an amplitude of 1, and 50 cycles . Wire the
Sinusoidal Pattern output of the Sine Pattern VI to the Waveform Data Array input of
the niFgen Create Waveform (DBL) VI in step 11.
11. Call
niFgen_CreateWaveformF64
(niFgen Create Waveform (DBL) VI) using the
following parameters:
•
vi : The session handle returned from
niFgen_init
• wfmSize : The size in samples (
500
) of the waveform you created in step 9 or step 10.
• wfmData : The array of waveform samples you created in step 9 or step 10.
• wfmHandle : The variable passed by reference through this parameter receives the
value (waveform handle) that identifies the waveform created by this function.
12. Call
niFgen_InitiateGeneration
(niFgen Initiate Generation VI) to initiate the
waveform generation using the following parameter:
•
vi : The session handle returned from
niFgen_init