HP 8340b - Page 92

A57
Pin
I/O
(3
of
3)
Pin
38
93
39
94
40
95
41
96
42
97
43
98
44
99
45
100
46
101
47
102
48
103
49
104
50
105
51
106
52
107
53
108
54
109
55
110
Mnemonic
-15V
-5.2V
-10V
-10V
GND PLANE
NEG BLANK
MKR RMP
RFSWP
Z-AXIS
BLANK
FPNLSWP
RPNLSWP
FPNLSWP RTN
RGND
RPNLSWP
RTN
RGND
RGND
HULH
HRFON
EXT
TRIG
LSSP
PEN LIFT
LSRQ
PEN LIFT
RTN
GND PLANE
GND
PLANE
Levels
-15V
-5,2V
-10V
-10V
0V
0,
+5V
0
TO 10V SWEEP
10V/SWEEP
+5V/-5V
10V/SWEEP
10V/SWEEP
0V
0V
0V
0V
0V
TTL (HIGH
TRUE)
TTL (HIGH TRUE)
EXTERNAL
SOURCE LEVEL
TTL
(LOW TRUE)
CLAMP AT
56V
TTL
(LOW TRUE)
0V
0V
0V
Source
XA56P1-15,
30
XA53P1-18,
36
XA53P1-12,13,31,32
XA53P1-12,13,31,32
INSTRUMENT GROUND
N
XA58P1-96
H
N
H
H
H
STAR GND
POINT
H
STAR GND POINT
STAR
GND POINT
A62J19-16
J
A62J31-4,18
M
J
*
J
INSTRUMENT
GROUND
INSTRUMENT
GROUND
Destination
*0
*0
•NOT USED
*NOT
USED
*0
A62J31-1,
15
DG
XA27P1-17
A62J31-2,16
A62J9-SMC
CENTER
A62J8-SMC
CENTER
*0
*
"0
*0
*NOT USED
*
L
A62J31-4, 18
A62J31-5,19
A62J31-6,
20
*NOT
USED
A62J31-21
*0
*0
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
A62
motherboard
wiring
list
for
a
complete
representation
of
signal
sources
and destinations.
HP
8340B/41B
Assembly-Level
Service
After Service Safety Checks
A-119/A-120