HP 3585A Service Manual page 204

Circuit Functional Descriptions
R E F E R E N C E
1 0 0KH2
P U L S E R E M O V E
COMMAND
R E f ER E N C E
1 0 0KH2
1 0 0KH7!
l O OKH'Z
PHASE C O M P .
I N P U T
6-22
V C O
3 0 - 5 0M H 2 D C C O RR E C T I O N V OL T A G E
BIAS C O N T R O L
�
P H A S E
COMPARA T O R
P H
C U R RE N T
I N T E G RA T O R
& 3
STEP Z
STEP 1
4
STEP
Figure 6· 1 0. PLL With Sample/Hold
VCO
3 0 - S 0MH2 D C C O R RE C T I O N V O L TA G E
B I A S CURRENT
C O N T R O L
0---1
--?
�
P HA S E
COMPARATOR
PH
C U R R E N T
y ea
F R E Q U E N C Y ", 45 . 025MHz
N . F . .. 45 . 0 2.5
REF
. 2 5 . 5 0 . 75 1 . 0 0
I N T E GRATOR WAVEFORM
A S I N G L E V C O PULSE I S R E M O V E D AFTER E V E R Y F O U R C Y C L E S OF T H E 1 0 0KHz REFEREN C E .
Figure 6·1 1 . Fractional N Phase Lock Loop
Scans by ART EK MEDIA =>
I N T E GRATOR
o---j
�
& 3
STEP Z
STEP 1
4
STEP
. 2 5
. 2 5 . 5 0 . 75 1 . 0 0
Model 3585A
SAM P L E/ H O L D
3585"-6-10
3585A-6-11