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Performance Tests
4. Displayed Average Noise Level
14.Record the following in
Center Frequency
Displayed Average Noise Level (Marker Amplitude)
15.On the spectrum analyzer, press
function.
16.On the spectrum analyzer, press
value for the band listed below:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
17.Set the conversion loss to the value recorded for this frequency in
Press
, 5, and
SHIFT
page 140. Press
dB
18.On the spectrum analyzer, press
average function to average 10 traces.
19.After the video average counter reaches 10, press MARKER
. The marker amplitude is the displayed average noise level.
PEAK SEARCH
20.Record the following in
Center Frequency
Displayed Average Noise Level (Marker Amplitude)
21.On the spectrum analyzer, press
function.
22.On the spectrum analyzer, press
corresponding to the maximum conversion loss measured in
23.Set the conversion loss to the value recorded for this frequency in
Press
, then enter the conversion loss value from
SHIFT 5 MHz
Press
to terminate the entry. Record this value in
dB
24.On the spectrum analyzer, press
average function to average 10 traces.
25.After the video average counter reaches 10, press MARKER
. The marker amplitude is the displayed average noise level.
PEAK SEARCH
26.Record the following in
Center Frequency
Displayed Average Noise Level (Marker Amplitude)
128
Table 4-10
on page 146.
and
SHIFT
CENTER FREQUENCY
, then enter the conversion loss value from
MHz
to terminate the entry. Record this value in
,
SHIFT
VIDEO BW
Table 4-10
on page 146.
SHIFT SWEEP TIME
CENTER FREQUENCY
,
SHIFT
VIDEO BW
Table 4-10
on page 146.
to turn off the video average
SWEEP TIME
and enter the corresponding
Table 4-7
Table 4-10
, 10, and
to activate the video
Hz
NORMAL
to turn off the video average
and enter the frequency
Table 4-7
Table 4-7
Table 4-7
Table 4-10
on page 146.
, 10, and
to activate the video
Hz
NORMAL
on page 140.
Table 4-7
on
on page 146.
and
on page 140.
on page 140.
on page 140.
and
Chapter 4
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