National Instruments NI PXI-5122, Процедура калибровки

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10 | ni.com | NI 5122/5124/5142 Calibration Procedure
6. Short-circuit the channel 0 input of the digitizer by connecting the calibrator test head
directly to the digitizer and grounding the output of the calibrator.
7. Wait 500 ms for the calibrator to ground its output.
8. Initiate a waveform acquisition using the niScope Initiate Acquisition VI.
9. Fetch a waveform from the digitizer and perform a voltage average measurement using the
niScope Fetch Measurement (poly) VI. Select the Measurement Scalar DBL instance of
the VI.
Compare the resulting average voltage to the value listed in the Calibration Test Limits
column or the Published Specifications column in Table 4 (NI 5122), Table 5 (NI 5124), or
Table 6 (NI 5142) that corresponds to the vertical range used.
Note
The inputImpedance and maxInputFrequency do not affect the test limit
value.
If the result is within the selected test limit, the device has passed this portion of the
verification.
10. Repeat steps 2 through 9 for each iteration in Table 3.
11. Move the calibrator test head to the digitizer input channel 1 and repeat steps 2 through 10
for every configuration in Table 3, changing the value of the channelList parameter from
"0"
to
"1"
.
LabVIEW VI C/C++ Function Call
Call
niScope_Initiate
Acquisition
with the
following parameter:
vi : The instrument handle from
niScope_init
LabVIEW VI C/C++ Function Call
Call
niScope_Fetch
Measurement
with the
following parameters:
timeout :
1.0
vi : The instrument handle from
niScope_init
channelList :
"0"
scalarMeasFunction :
NISCOPE_VAL_VOLTAGE_
AVERAGE