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PXIe-5665 Calibration Procedure
3.
Set the RF source 2 frequency and power according to the first row in Table 4.
4.
Configure the anti-distortion test fixture to use the appropriate lowpass filter path according
to Table 5.
5.
Enable the RF source 2 output.
6.
Measure the channel B power using the appropriate calibration factor for the power sensor
frequency. Adjust the RF source 2 power until this measured power is within ±0.1 dB of the
value listed in Table 4. The final RF source 2 power setting is the
RF Source Power LPF
for that frequency.
7.
Repeat steps 3 to 6 for all the frequencies and powers in Table 4.
Table 4.
RF Source 2 Settings
Start Frequency
Stop Frequency
Step Size
Power (dBm)
300 MHz
1.8 GHz
10 MHz
0
1.9 GHz
7.0 GHz
100 MHz
0
300.0333125 MHz
1790.0333125 MHz
10 MHz
-30
1.8 GHz
—
—
-30
Table 5.
Lowpass Filter Frequency Ranges
Lowpass Filter Path (MHz)
Frequency Range
470
1 MHz to 470 MHz
735
>470 MHz to 735 MHz
1,150
>735 MHz to 1.150 GHz
1,800
>1.150 GHz to 1.800 GHz