HP 3585A Service Manual page 208

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- � A Z 6 1
V T O
3 YNTHESIZER
3 T E P
I
SHr OUTPUT
1 9 8 - 1 3 8MHzl
L O OP
O V E N REF E R E N C f
R E F E R E N C E
FROM
l/C iA45�
L O C O N T R O L
(£) 2003-2005
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REFEREN
S T E P L O O P
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l O MHz F R O M
R E F E R E N C' f
B U F F E R
BUFFER
--t5
1 0MH%
O U T
U F F
ER
1 0 0KHz
- OU T 1
C O N T R O L
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F RA C T I O N A L N L O O P
CONTROL VOLTAGt
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HO
---- - F I RST LO TUNE
.,
L O
V Tii -
1
1
1
S U M L O O P
' -
- -
1 0 0KHz FROM
R E F E R E N C E
11 2. 1
F RA C .
N
CONTROL
'IP I DATA
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R -
BUF
FE
L O
1 1
B U F F E R BUFFER
,0.5<:
tlI XER 11'2 T O T RA C K I N G
T O F I R S T
CENERATOR
BUFFER BUFFER
BUFFER
---- .1
.. LOOP
"ODE
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N
V T o ii' D
D 1 VD E R S
I
I
BUFF ER/
L E V E L SH I F T ER
LOOP M I X ER
B U F F E R
li M P
SUM OUT
1 0 0 . 3 5 - 1 4 0 . 3
L OOP
D C C O N T R O L