
17. 20/30 Loop Phase Lock Adjustments
Equipment
Spectrum Analyzer
.........................................
HP 8566B
High-frequency Active Probe
.............................
HP 41800A
Probe Power Supply
........................................
HP 1122A
Frequency Counter
.........................................
HP 5343A
Frequency Synthesizer
.....................................
HP 3335A
Synthesized Sweeper
....................................
.HP
8340A/B
Precision Power Supply
....................................
HP 6114A
Digital Voltmeter
...........................................
HP 3456A
15x2 Extender Board
(serwice
acces.sory~
...............
.08505-60041
Adapters:
Adapter, SMB (m)(m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1250-0672
Adapter, BNC to Alligator Clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1250-1292
Cables:
BNC to SMB Test Cable (2
required) (service accessory) 85680-60093
Procedure
Phase
Lock Loop
1
1. Set
the
spectrum analyzer LINE switch to STANDBY. Turn the
WJJ)
spectrum analyzer over to position the RF Section on top, as
shown in Figure 3-77 and remove the RF Section bottom cover.
PRECISIDR
PWER
SUPPLY
DIBITAL
VOLTMETER
SYNTHESIZER/LEVEL
/
I I
I I
SPECTRUl
ANALYZER
UPOmR
SUPPLY
SPECTRUM
AN
IALYZER
Figure 3-77.
20/30
PLL Adjustment Setup
2. Remove the
AlOAl
PLLl
VCO Assembly from the spectrum
analyzer. Disconnect cable 1 (brown) from
AlOA5J5
SCAN .l-5
MHz OUT, cable 5 (green) from
AlOAlJ2
OUT 20-30 MHz, and
the yellow cable from
AlOAlJ3
OUT 200-300 MHz.
Adjustments 3-147
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