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NI 5122/5124/5142 Calibration Procedure
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© National Instruments
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15
10. Using the calibrator, output the
Negative Input
voltage listed in Table 7 (NI 5122/5142) or
Table 8 (NI 5124) that corresponds to the vertical range used.
11. Wait 2,500 ms for the impedance matching and frequency of the calibrator to settle.
12. Initiate a waveform acquisition using the niScope Initiate Acquisition VI.
13. 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. This value is the
Measured Negative Voltage
used in step 14.
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
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_FetchMeasureme
nt
with the following
parameters:
timeout
:
1.0
vi
: The instrument handle from
niScope_init
channelList
:
"0"
scalarMeasFunction
:
NISCOPE_
VAL_VOLTAGE_AVERAGE