HP 8340B Manual page 68

A25 Pin I/O
Pin
1
23
2
24
3
25
4
26
5
27
6
28
7
29
8
30
9
31
10
32
11
33
12
34
13
35
14
36
15
37
16
38
17
39
18
40
19
41
20
42
21
43
22
44
Mnemonic
DET S/H
+
DET S/H
-
HPLSEN
THERM 1
THERM 2
+20V
+20V
+52V
+52V
-10V
-10V
GND
GND
GND
DETOUT
DETLVL
RGND
RGND
LVLREF
TCREF
LVLCOR
HMTR
LHET
LDETBW
HINT
EXDETR
EXDET
Levels
+4.5/+35V
+3..5/+45V
TTL
(HIGH TRUE)
-1V
TO
-8V
-10V
+20V
+20V
+5,2V
+5.2V
-10V
-10V
0V
0V
0V
-30mV/dB,
0V
=
OdBm
-200mV/dB,
Ov
=
OdBm
0V
OV
0.2V/dB, OV
=
OdBm
-200mV/dB,
OV
=
OdBm
+1.25dB/VOLT,OV=OdB
TTL
(HIGH TRUE)
TTL
(LOW TRUE)
TTL (LOW TRUE)
TTL
(HIGH TRUE)
OV
0 5mV
-
2V
Source
XA21P1-3
XA21P1-21
XA26P1-2
A62J34-3
A62J34-1
XA52P1-16.40
XA52P1-16, 40
XA52P1-17,18,41,42
XA52P1-17,18,41,42
XA53P1-12,13,31,32
XA53P1-12,13,31,32
A62 STAR GND
A62 STAR GND
A62 STAR GND
F
D
STAR GND POINT
STAR GND POINT
XA27P1-30
G
B
XA26P1-13
XA27P1-20
XA26P1-9
XA26P1-42
»
A26J16 SMC CENTER
Destination
C
C
•NOT USED
A
A
*H
*H
•NOT USED
*NOT
USED
*H
*H
*
*
*
XA26P1-10
XA27P1-29
*H
*H
G
XA26P1-12
XA27P1-62A
F
*A
•NOT USED
F
E
E
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-71/A72