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15.Set the spectrum analyzer controls as follows:
,
,
,
, and
SHIFT
5
MHz
0
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 MHz
ENTER dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 dB
CF STEP SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 MHz
16.Set the reference level of the spectrum analyzer by pressing
entering the corresponding value for the appropriate band listed below:
for an 11974A: − 40 dBm
for an 11974Q: − 40 dBm
for an 11974U: − 40 dBm
for an 11974V: − 55 dBm
17.Set the center frequency of the spectrum analyzer by pressing
entering the corresponding value for the appropriate band listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33 GHz
for an 11974U: 40 GHz
for an 11974V: 50 GHz
18.On the spectrum analyzer, press MARKER
19.Record the following values in
Marker Frequency
Marker Amplitude
Power Meter Reading
Cal Factor % or Correction Factor (dB)
Directional Coupler Coupling Factor
For the purpose of this measurement, the directional coupler coupling factor
NOTE
is defined as the ratio of the power at the output flange to the power at the
coupled flange.
Chapter 4
(sets external mixer conversion loss to 0 dB)
dB
PEAK SEARCH
Table 4-7
on page 140.
Performance Tests
1. Conversion Loss
and
REFERENCE LEVEL
CENTER FREQUENCY
and
.
PRESEL PEAK
and
111
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