NI 5622 Calibration Procedure
48
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5.
Measure the power (in watts) of the sine wave using the power meter.
This value is the
Power Meter Measured Sine Wave Power
. Use this
value to calculate the
Measure Sine Wave Amplitude
used in step 6.
where
a
=
Power Meter Measure Sine Wave Power
b
=
Power Splitter Power Correction
6.
Adjust the vertical range using the niScope Cal Adjust Range VI.
7.
Repeat steps 5 and 6. The first iteration configures the digitizer, and
the second iteration performs the adjustment.
8.
Repeat steps 3 through 7 for each iteration in Table 9.
9.
Configure the signal generator to output a 15 MHz, 1.25 V
pk-pk
sine wave.
10. Wait the amount of time the manufacturer recommends for the output
of the signal generator to settle.
11. Adjust the sample rate using the niScope Cal Adjust VCXO VI.
12. Set Index = 0.
LabVIEW VI
C/C++ Function Call
Call
niScope_CalAdjustRange
with
the following parameters:
sessionHandle
: The session handle from
niScope_CalStart
channelName
:
“0”
range
: The
Range
value in Table 9 for the
current iteration
stimulus
: The
Measured Sine Wave
Amplitude
value
LabVIEW VI
C/C++ Function Call
Call
niScope_CalAdjustVCXO
with the following parameters:
sessionHandle
: The session handle
from
niScope_CalStart
stimulusFreq
:
15,000,000
Measured Sine Wave Amplitude
10
a
×
10
b
20
------
×
=
