HP 8642A Operating Manual page 565

A6A2 D I V I D E - B Y - 1 0 8 0 AND
J
< COUNTER SIGNAL S W I T C H I N G
FM LOOP
135 MHz
2?
A6A2
250 KHz , ^1
TTL
* A6A7
J3
COUNTER
AUDIO
4ioao
ABA 2
J2
< 3
125 KHz
412.500
O R
25. 000
n
he
-3
10 Hz/
AUDIO
COUNTER CONTROL
LOGIC AND COUNT CHAIN
COUNT PERIOD
COUNTER 45 MHZ
45 MHz/
ANHTn
< 5
FM
135 MHz
■ f 1030
COUNTER
OUTPUT
nnimTFn 4S HH7 OH MIHTP
SS19
SS20 A6A2
J l
TO REAR
PANEL
(J4) EXT.
REFERENCE
A6A2
J7
TIMEBASE
DIAGNOSTICS
45 MHz
OSCILLATOR
ft)
" > ■
*-< 12
A6A2
J9
TIMEBASE
DIAGNOSTIC
BUS
HET
45 MHz
DIVIDERS
A6A2
J f l
' > SAWR
45 MHz
10 MHz
OUT
A6A2
J5
v
AHA; A5A2
J2
A6A2
JB
SS21
SS22
SS«S£RVICE SHEET
rP
500 KHz FM
REFERENCE
500 kHz
IF
REFERENCE
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 Coordi n a t e s
COMP
Cl
C2
C3
C4
C5
C6
ca
C9
C20
C21
C22
C23
C36
C37
C3B
C39
C40
C41
C42
C43
C44
C45
C85
C86
CS7
CBB
CB9
C90
C31
C36
C97
X,Y
C. 1
C. 2
C. 3
C; 1
D. 3
C, 3
D. 3
C. 2
D. 2
D. 2
D. 1
C, 2
C. 3
C. 2
D. 3
D. 1
C. 2
D, 3
D. 3
C. 3
D. 3
D, 3
C. 1
C, 2
C. 2
D. 2
0. 2
C. 1
C. 2
C, 2
C, 2
COMP
CRl
CR2
CR3
CR4
CR5
CR6
CR7
CR9
FL1
FL2
FL3
FL4
FL5
FL6
J l
J7
L4
L5
L6
L12
L13
L14
L17
L18
L19
L23
L24
L25
L26
Ql
02
X,Y
C. 2
C. 2
C, 3
C. 2
C, 3
C. 1
C, 3
C. 1
D. 1
D, 1
D. 1
D, 1
D. 1
D. 1
D. 1
C. 1
D, 2
0, 1
D. 1
C. 2
C. 3
0. 1
C, 1
c. a
C. 2
C. 3
C, 3
C. 3
D, 1
D, 1
D. 1
COMP
fli
R2
A3
fl4
P.5
R6
R7
RB
R9
RIO
R l l
R12
R13
R14
R15
R16
R17
R18
R19
R40
R41
R64
R65
R68
T l
U14
U15
U21
U30
U31
U35
XI
X2
X,Y
C, 1
C, 1
C, 2
C. 3
D. 3
D. 3
D. 3
D. 3
0. 3
D. 3
D, 3
0.3
D.
a
C. 3
C. 3
C. 3
C. 3
C. 2
D, 3
D. 3
C, 2
D. 2
D. 2
D. 1
C. 2
C. 2
C, 2
C. 2
Q. 3
0, 3
C. 3
C. 3
C, 3
COMP
X,Y
COMP
X.Y
COMP
X,Y
COMP
X,Y
COMP
X.Y
COMP
X,Y
^ , ~ * . - COUNTER/ O O f\ f\
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