HP 8340B Manual page 69

A26
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
LMODHLD
LHIBND
HPLSEN
HRFON
+20V
+20V
+5.2V
+5.2V
-10V
-10V
GND
GND
HSP
HLBO
LOMD
HLB1
LDETBW
HLB2
DETOUT
MODLVL
RGND
HLBW
TCREF
RGND
HMTR
DB11
LHET
LUNLVL
DBO
DB1
DB2
DB3
DB4
DB6
SRD BIAS CONT
DB7
AM IN
AMRTN
MODHI
HINT
MOD RTN
HMRKR
MODLO
WMOD
Levels
TTL
TTL
(LOW TRUE)
TTL
(HIGH TRUE)
TTL
(HIGH TRUE)
+20V
+20V
XA52P1-17,18,41,42
+5
2V
-10V
-10V
0V
0V
TTL
(HIGH TRUE)
TTL
(HIGH TRUE)
TTL
(LOW TRUE)
TTL
(HIGH TRUE)
TTL
(LOW TRUE)
TTL
(HIGH TRUE)
-30mV/dB.
0V
=
OdBm
OVTO
-3V
(LEVELED)
0V
TTL
(HIGH TRUE)
-200mV/dB, OV=
OdBm
0V
TTL
(HIGH TRUE)
TTL
TTL
(LOW TRUE)
TTL
(LOW TRUE)
TTL
TTL
TTL
TTL
TTL
TTL
OTO
-5V
(LEVELED)
TTL
±
1V MAXIMUM
0V
CURRENT SOURCE
TTL
(HIGH TRUE)
0V
TTL
(HIGH TRUE)
CURRENT SOURCE
TTL
(LOW TRUE)
Source
XA21P1-2
D
E
XA57P1-105
XA52P1-16, 40
XA52P1-16, 40
*H
XA52P1-17,18,41,42
XA53P1-12,13,31,32
XA53P1-12,13,31,32
A62 STAR GND
A62 STAR GND
XA57P1-13
XA27P1-46
C
XA27P1-16
E
XA27P1-47
XA25P1-32
B
STAR GND POINT
E
XA25P1-35
STAR GND POINT
E
*
XA27P1-20
C
XA60P1-20
XA60P1-76
XA60P1-21
XA60P1-77
XA60P1-22
XA60P1-78
G
XA60P1-79
A62J15-SMC CENTER
*
D
E
D
XA57P1-2,12
D
XA27P1-59
Destination
B
A62J19 PIN 15
*
*B
*H
*H
*H
*H
*H
*H
"H
*
*F
XA27P1-48
*F
*XA25P1-39
*F
B
XA27P1-61
•H
XA21P1-6
B
*H
XA25P1-36
*E
•NOT USED
XA27P1-52
*E
*E
*E
*E
*E
*E
XA24P1-13
*E
A
A
A62J13-SMC CENTER
XA25P1-42
A62J13-SMC SHIELD
B
A62J14-SMC CENTER
*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