©
National Instruments Corporation
19
NI 5622 Calibration Procedure
15. Calculate the absolute amplitude accuracy error using the following
formula:
where
a
=
Digitizer Measured Sine Wave Amplitude
b
=
Reference Flatness Gain Correction Factor
c
=
Power Meter Measured Sine Wave Power
d
=
Splitter Power Correction
Compare the result to the
Published Specifications
for the current
iteration listed in Table 4. If the results are within the selected test
limit, the device has passed this portion of the verification.
16. Repeat steps 4 through 15 for each iteration in Table 4.
17. End the session using the niScope Close VI.
You have finished verifying the absolute amplitude accuracy for the
NI 5622.
LabVIEW VI
C/C++ Function Call
Call
niScope_close
with the following para
meter:
vi
: The instrument handle from
niScope_init
error
10 log
10
×
a b
×
(
)
2
c
-------------------
20
–
d
+
=
