HP 8642A Operating Manual page 542

A6A2
J4
DIVIDE-BY-1080 AND
COUNTER SIGNAL SWITCHING
A6A2
J2
FM LOOP * T
135 MHZ
250 KHZ
TTL
COUNTER *
AUDIO
COUNTER CONTROL
LOGIC AND COUNT CHAIN
< 3 FM
135 MHz
~ 1080
/ „ COUNTER
^
3
OUTPUT
j ,-TIMEBASE
* " D I A G N O S T I C
TO REAR
PANEL
[J4] EXT.
REFERENCE
SS-SERVICE SHEET
R e f e r e n c e Block D i a g r a m
C o m p o n e n t C o o r d i n a t e s
COMP
C50
C 5 i
C52
C53
C54
C55
C56
C5B
C59
CB4
C70
C74
C79
cai
CB2
C93
C95
J 2
J3
J4
L 2 0
Lai
L 2 2
R50
R51
R52
R53
R54
R55
R59
R60
R63
X,Y
A, 1
A, 1
A, 1
B. 1
B, 1
B, i
B, 1
A, 2
A, i
A. 3
B. 3
B. 3
B. 3
A. i
A. J
A, 3
B. 1
A. 2
A, 1
A. 1
B. 3
B, 1
A. 1
A. 1
A, 1
A. 1
B. 1
A. i
B. 1
B. 3
A. 2
A. 1
COMP
T P l
TP2
U l
U2
U3
U4
U5
U7
U16
U17
U18
U22
U32
U33
U34
U36
X
r
Y
A, 2
A. 3
B. i
B. i
A, 1
B. 1
B, 1
A. 2
A. 2
A. 2
A. 2
A. 2
A. 3
A. 3
B, 3
A. 2
COMP
X.Y
COMP
X,Y
COMP
X,Y
COMP
X.Y
COMP
X,Y
COMP
X.Y
COMP
X.Y
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