HP ESA-L1500A, Руководство пользователя и калибровки

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Chapter 9 247
Performance Verification Tests
13. Frequency Response
7. Set the synthesized signal generator frequency to 100 kHz.
75
Ω
Input: Set frequency to 1 MHz.
8. Adjust the synthesized sweeper power level for a spectrum analyzer
marker amplitude reading of
−
14 dBm
±
0.10 dB.
9. Press
Frequency
,
100 kHz
on the spectrum analyzer.
75
Ω
Input: Press,
Frequency
,
1 MHz
10.Set the sensor Cal Factor on the measuring receiver, then record the
negative of the power ratio displayed on the measuring receiver in
column 2 of
Table 9-15 as the Error Relative to 50 MHz at 100 kHz.
75
Ω
Input: Error relative to 50 MHz at 1 MHz.
11.Set the synthesized signal generator CW to 100 MHz.
12.Press
FREQUENCY
,
100 MHz
on the spectrum analyzer.
13.Adjust the synthesized sweeper power level for a spectrum analyzer
marker amplitude reading of
−
14 dBm
±
0.05 dB.
14.Set the sensor Cal Factor on the measuring receiver, then record the
negative of the power ratio displayed on the measuring receiver in
column 2 of
Table 9-15 as the Error Relative to 50 MHz at 100 MHz.
15.On the synthesized signal generator, press
FREQUENCY
, and
↑
(step-up key), then on the spectrum analyzer, press
Frequency
, and
↑
(step-up key).
16.Repeat step 13 and step 14 for each new frequency, entering the
power sensor Cal Factor into the measuring receiver for each
frequency setting as indicated in
Table 9-15 .
17.This step applies only to analyzers with 75
Ω
inputs.
In Table 9-15 , starting with the error at 1 MHz, subtract column 4
(System Error) from column 2 (Error Relative to 50 MHz), and
record the result in column 5 as the Corrected Error.