HP 8340B Manual page 74

A31 Pin I/O
Pin
1
16
2
17
3
18
4
19
5
20
6
21
7
22
8
23
9
24
10
25
11
26
12
27
13
28
14
29
15
30
Mnemonic
-10V
-10V
+20V
+20V
-5.2V
-5.2V
GND
GNO
GND
GND
VCDTUNE(-)
VCOTUNE(+)
GND
GND
N1
N2
N5
N6
N3
N4
GND
HULM
GND
GND
M1
M2
M3
M4
M5
LMNE
Levels
-10V
-10V
+20V
+20V
-5.2V
-5.2V
OV
OV
OV
OV
OV
OV
TTL
TTL
TTL
TTL
TTL
TTL
OV
TTL
(HIGH TRUE)
OV
OV
TTL
(HIGH TRUE)
TTL (HIGH TRUE)
TTL (HIGH TRUE)
TTL
(HIGH TRUE)
TTL HIGH TRUE
TTL
(LOW TRUE)
Source
XA34P2-8, 9
XA34P2-8, 9
XA34P2-2.3
XA34P2-2, 3
XA34P2-12, 13
XA34P2-13, 13
INSTRUMENT GROUND
INSTRUMENT GROUND
INSTRUMENT GROUND
INSTRUMENT GROUND
G
G
INSTRUMENT GROUND
INSTRUMENT GROUND
XA34P1-15
XA34P1-14
XA34P1-11
XA34P1-10
XA34P1-13
XA34P1-12
INSTRUMENT GROUND
H
INSTRUMENT GROUND
INSTRUMENT GROUND
XA34P1-5
XA34P1-6
XA34P1-3
XA34P1-4
XA34P1-1
XA34P1-2
Destination
ii
n
«
»
»
»
«
*
*
«
n
*\
A
A
A
A
A
A
•I
XA34P1-8
»i
A
A
A
A
A
NOT USED
A
single
letter
in the source or destination column refers
to a
function block on this
assembly schematic.
An asterisk (*) denotes multiple sources or destinations; refer to the A34 Reference
Loop
-
M/N
Motherboard Schematic Diagram for
a
complete representation of
signal sources and destinations.
HP 8340B/41B
Assembly-Level Service After Service Safety Checks