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NI PXI-5404 Calibration Procedure
Because the uncompensated amplitude varies over the bandwidth of the module, GAIN DAC
calibration occurs at several frequencies to flatten the response. Repeat the amplitude calibration
for each frequency. Refer to Table 5 for the applicable frequencies.
To calibrate the SINE out amplitude, complete the following steps:
1.
Call
niHSSources_ApplySessionConstants
(niHSSources Cal
ApplySessionConstants VI) to pass the updated calibration constants to the underlying
driver. This function ensures that the session uses the new VXCO DAC values calculated
during the VCXO calibration.
Table 5.
SINE Out Calibration Frequencies
Index
Frequency
Instrument
0
50 kHz
DMM
1
6 MHz
Power meter
2
15 MHz
Power meter
3
25 MHz
Power meter
4
35 MHz
Power meter
5
43 MHz
Power meter
6
51 MHz
Power meter
7
55 MHz
Power meter
8
61 MHz
Power meter
9
65 MHz
Power meter
10
69 MHz
Power meter
11
73 MHz
Power meter
12
77 MHz
Power meter
13
82 MHz
Power meter
14
86 MHz
Power meter
15
90 MHz
Power meter
16
94 MHz
Power meter
17
97 MHz
Power meter
18
100 MHz
Power meter
19
103 MHz
Power meter
20
105 MHz
Power meter