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Operation
Using a PSA Series Spectrum Analyzer
Frequency Tracking Calibration This procedure is used to align the frequency of the
preselector filter of the Agilent 11974 to the tuned frequency of the analyzer. This
procedure should be followed any time that the Agilent 11974 is connected to a different
analyzer. The calibration should be periodically checked.
1. Set the Agilent 11974 rear-panel switches "ESA/PSA/70907B" and "LEDS" to the ON
position, and the other two switches to the OFF position, in order for the Agilent 11974
to properly scale to the tune signal of the analyzer.
2. Configure the analyzer for a preselected external mixer by pressing the following keys:
,
Preset
Factory Preset
3. Set the desired band of operation. Press
A,Q,U, and V bands are available.)
4. Press,
,
Mixer Config
5. Set the Presel Adjust to 0 MHz by pressing
6. Set the analyzer to zero span by pressing
7. Set the analyzer center frequency by pressing
corresponding value for the appropriate mixer. (Refer to
the Agilent 11974, adjust the corresponding potentiometer until one or both of the green
LEDs are lit.
Table 3-6.
Mixer
Agilent P/N
11974A
11974Q
11974U
11974V
8. Change the analyzer center frequency to the value indicated in
adjust the corresponding potentiometer on the rear panel of the 11974 until one or both
of the green LEDs are lit.
Table 3-7.
Mixer
Agilent P/N
11974A
11974Q
11974U
11974V
86
(if present),
Input/Output
Ext Mix Band
(Presel).
Mixer Type
Analyzer Center
Frequency
26.5 GHz
33.0 GHz
40.0 GHz
50.0 GHz
Analyzer Center
Frequency
40.0 GHz
50.0 GHz
60.0 GHz
75.0 GHz
,
,
Input Mixer
Input Mixer
,
,
,
, or
A
Q
U
,
AMPLITUDE
Presel Adjust
,
.
SPAN
Zero Span
,
FREQUENCY
Center Freq
Table
3-6.) On the rear panel of
Potentiometer
"26.5 GHz Adjust"
"33.0 GHz Adjust"
"40.0 GHz Adjust"
"50.0 GHz Adjust"
Potentiometer
"40.0 GHz Adjust"
"50.0 GHz Adjust"
"60.0 GHz Adjust"
"75.0 GHz Adjust"
(Ext)
. (Note that only
V
, 0,
.
MHz
, and enter the
Table 3-7.
and again
Chapter 3
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