NI 5412 Calibration Procedure
|
© National Instruments
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27
10. Call
niFgen_ConfigureArbWaveform
(niFgen Configure Arbitrary Waveform VI)
using the following parameters:
•
channelName
:
"0"
•
wfmHandle
: The waveform handle returned from
niFgen_CreateWaveformF64
.
•
Gain
:
1
•
Offset
:
0
•
vi
: The session handle returned from
niFgen_init
11. Call
niFgen_SetAttributeViBoolean
(niFgen property node:
Output»Output
Enabled
) to enable the NI 5412 output using the following parameters:
•
channelName
:
"0"
•
attributeID
:
NIFGEN_ATTR_OUTPUT_ENABLED
•
value
:
VI_TRUE
•
vi
: The session handle returned from
niFgen_init
12. Call
niFgen_InitiateGeneration
(niFgen Initiate Generation VI) using the
following parameter:
•
vi
: The session handle returned from
niFgen_init
13. Allow the power meter to stabilize for 10 seconds.
14. Measure and record the reference (50 kHz) power (W
ref
) of the positive output in Watts.
15. Configure the NI 5412 and power meter frequency according to the next iteration in
Table 7.
16. Using the recorded power values, calculate the deviation from the reference (50 kHz)
power using the following equation:
17. Call
niFgen_AbortGeneration
(niFgen Abort Generation VI) to abort the current
generation using the following parameter:
•
vi
: The session handle returned from
niFgen_init
5
4,000,000
1,000
40
-1 dB to +1 dB
-1 dB to +1 dB
6
5,000,000
1,000
50
-1 dB to +1 dB
-1 dB to +1 dB
7
6,000,000
1,000
60
-1 dB to +1 dB
-1 dB to +1 dB
8
20,000,000
1,000
200
-3 dB to 0 dB
-3 dB to 0 dB
Table 7.
NI 5412 Setup for Frequency Response (Flatness) Verification
Iteration
Frequency
(Hz)
Number
of
Samples
Number
of
Cycles
Published Specification
Low-Gain
Amplifier
High-Gain
Amplifier
Flatness dB
10
W
f
W
ref
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