Lear Siegler ADM 3A - Page 20

____ LEAR SIEGLER, INC.
DATA PRODUCTS DIVISION
MODEM PORT CONNECTOR
MODEM CURRENT LOOP
EXTENSION CURRENT LOOP
IJ2;
CONNECTOR IJ41 CO~~ECTOR IJ31
"N ~O
IIQ~AL FUNCTION
PIN ~O
SIGNAL FU~CTION
'I~ NO
SIGNAL FUNCTION
1
FRAME
G~D
1
CRXD 1
ETXD
2
nco
2
2
J
AXD
•
FITS
3 eLRXD·
3
EeLRXD·
Ii
elS
•
CLRXD -
•
ECLRXO -
~
OSR
Ii
-12v
Ii
-12v
7
GND
8 DeD
6
GND
6
GND
9
7 Cl TXD •
7
Eel TXD.
10
ofUMfttA COHHECT10~
11
8 CLTXD -
8 ECLTXD - FOJil CVA"lNT LOOP
AHD .. :1-232C IE' I
12
9
• 12.
9
+1211
13
lC + 5.
10
+ SV
PIN ~O ItONAL FUNCTION
14
15
"
CTXD 11 ERXD
, .. :2
RS2J2C
16
2 .. 3
CURRENT LOOP (OFT10N~
12
12
17
Cl TXD·
/
7
18
1\
19
20
DlF
2'
\ ·v
22
23
ClRxD -
24
CL nc, -
2!> ClRXD·
~
EXTENSIOPII POFIT CONNECTOI:<
IJ' J
PIN !'IiO
SIGNAL FUNCTIO~
I
I
,
FRA~E G"-:
2
ElXt'
v~
~
3
ERX:
4
ERTS
5
EC1S
6
EDSF
7
G~r
e EDCD
9
\
I
1C
MONITOR CONNECTOR
"
IJ5
KEYBOAFIO CONNECTOR
1;:
IJ6,
, 3
PI!'Ii NO
SIGNAL FUNCTIO""
PIN NO
SIGNAL FUNCTION
'4
,
KE\
15
1
G"'D
2
16
3
:2
+ 5v
17 EClRXD·
4
VIDEC
3 + 5.
18
5
19
6
;I
G"'D
20
EOTR
7 CHASSIS GROUND
5
KeD DAlA
21
8
HSv",C
6
:2:2
9
IISv .... C
23
ECl TXC'
10
R[1URr.
7
FRAME
G"'D
2.
EClRXC -
"
+15V
8
FRAME G"':
n
ECllX: -
, 2
Figure 2-2. ADM 3A Connector Locations
2-4