HP 8340A Service Manual page 177

Model
A41 PLL2 Phase Detector, Pin l/0
A41
Pin Mnemonic
1 GND
ov
16 GND
ov
2
HLE2 TTL !HIGH TRUE)
17
3 GND
ov
18 GND
ov
4
HUL2 TTL !HIGH TRUE)
19
DIV N2 TTL ILDW TRUE)
5
20 500 KHZ REF TTL
6 GND
ov
21 GND
ov
7 -7V REF -7V
22 GND ov
8 N2 TUNE RTN
ov
23 N2 TUNE 0 TO +7 VOLTS
9
24
10
GND ov
25 GND.
ov
11 GND
ov
26 GND
ov
12 -10V -10V
27 -10V -10V
13
+20V +20V
28 +20V +20V
14 GND
ov
29 GND
ov
15
+5.2V +5.2V
30
+5.2V +5.2V
A single letter in the source or destination column refers to a function block on this assembly
schematic.
An asterick (*) denotes multiple sources or destinations; refer to the A62 Motherboard Wiring
List for a complete representation of signal sources and destinations.
Scans by HB9HCA and HB9FSX
8340A Service
-
Levels Source
A62 STAR GND
A62 STAR GND
XA59P1-53
A62 STAR GND
A62 STAR GND
E
XA42P1-27
XA42P1 -9
A62 STAR GND
A62 STAR GND
XA43P1-9
A62 STAR GNO
F
D
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
XA53P1-12, 13, 31, 32
XA53P1-12, 13, 31, 32
XA52P1-16, 40
XA52P1-16, 40
A62 STAR GND
A62 STAR GND
XA52P1-17, 18, 41, 42
XA52 P1 -17, 18, 41, 42
Destination
*F
*F
*A B C
*F
*F
XA59P1-107
A
A
*F
*F
F
*F
XA43P1-10
XA43P1-28
*F
*F
*F
*F
*F
*F
*F
*F
*F
*F
*F
*F
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