Agilent Technologies HP 8566B Dokumentacja Strona 272

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15.
M/N
Loop
Adjustments
Reference
RF-Section:
A7A4
M/N
Output
Description
The M/N VCO tuning range end points and output level are set and
checked to ensure an adequate RF output level across the tuning
range of the M/N phase-lock loop.
Equipment
Frequency Counter .........................................
HP 5343A
Spectrum Analyzer
.........................................
HP 8566B
Digital Voltmeter (DVM)
....................................
HP 3456A
Precision Power Supply
....................................
HP 6114A
15x2 Extender Board
(semvice
accessory)
...............
.08505-60041
Adapters:
Adapter, SMB Male-to-Male
(serwice
accessov)
. . . . 1250-0669
Cables:
BNC to SMB Test Cable (service accessory) . . . . . . . . . . . .085680-60093
Procedure
1. Position the spectrum analyzer on its right side as shown in
Figure 3-67. Remove the bottom cover of the RF Section.
2. Connect the frequency counter’s rear-panel 10 MHz FREQ STD
OUT connector to the RF Section’s rear-panel FREQ REFERENCE
EXT connector. See Figure 3-67. Set the RF Section’s rear-panel
switch to EXT.
3. Connect a jumper between
A12TP2
and
A12TP3
(LOCK
INDICATOR DISABLE) in the RF Section. Refer to Figure 3-68 for
the location of
A12TP2
and
A12TP3.
PRECISION
PMKR
SUPPLY
DIGITAL
VDLTKTER
SPECTRW
ANALYZER
(Devise
Under
Tort)
Figure 3-67. M/N Loop Adjustment Setup
3-132
Adjustments
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