National Instruments NI 54 Series, Calibration Procedure

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Chapter 2 Verification
© National Instruments Corporation 2-11 NI 54XX Calibration Procedure
3. Call
niFgen_EnableDigitalFilter()
to select the channel to
enable a digital filter on. Set the following parameters:
• vi —The output value
sessionHandle
that you obtained from
the
niFgen_init
function
• Channel_Name —
”0”
4. Call
niFgen_ConfigureStandardWaveform()
to select the
channel to output a waveform. Set the following parameters:
• vi —The output value
sessionHandle
that you obtained from
the
niFgen_init
function
• Channel_Name —
”0”
• Amplitude —
10
• DC_Offset —
0
• Frequency —
1000000
• Waveform —
NIFGEN_VAL_WFM_SINE
• Start_Phase —
0
5. Call
niFgen_InitiateGeneration()
to initiate signal generation.
This function causes the function generator to leave its configuration
state and enter its signal generation state. The only parameter required
for this function is
sessionHandle
.
6. Measure the 1 MHz frequency generated by the NI 54 XX device at
SYNC OUT using the counter timer. The frequency measurement
should fall between 999,985 Hz and 1,000,015 Hz. A frequency error
of 15 Hz in 1 MHz corresponds to an error of 15 ppm and accounts for
initial accuracy and frequency deviation caused by temperature and
aging.
7. Call
niFgen_Close()
to close the instrument I/O session, destroy the
instrument driver session and all of its properties, and release any
memory resources the driver uses. The only parameter required for this
function is the
sessionHandle
.
You have completed verifying the device oscillator frequency accuracy of
your NI 54
XX device.