Multitech DataTalker DT101 Owner's Manual page 121

Composite Link Cabling
RS232C/V.24 Configured Composite Link*
PIN NO.
1
2
3
To
4
External
5
Synchronous
7
Modem/DSU/
8
Terminal Adapter
15
Connector
17
20
25
V.35 Adapter Cable Configured on a
RS232C/V.35 Composite Link**
V.35 34-PIN
CONNECTOR (MALE)
A
B
C
D
E
F
H
P
R
S
T
U
V
W
X
Y
AA
* The DataTalker RS232C interface circuits have been designed to meet the electrical specifications
given in EIA (Electronic Industries Association) RS232C and ITU-T (International Telecommunications
Union) V.24 Standards.
** When configured for V.35 interface operation on the composite link, the V.35 adapter cable should
be used. This cable uses a 25-pin female connector at one end and a 34-pin Winchester male
connector at the other end.
PIN NO.
1
CHASSIS GROUND (AA)
2
TRANSMIT DATA (BA)
3
RECEIVE DATA (BB)
4
REQUEST TO SEND (CA)
5 To DataTalker
CLEAR TO SEND (CB)
RS232C/V.35
7
SIGNAL GROUND (AB)
Connector
8
CARRIER DETECT (CF)
15
TRANSMIT CLOCK (DB)
17
RECEIVE CLOCK (DD)
20
DATA TERMINAL READY (CD)
25
25-PIN
CONNECTOR (FEMALE)
1 PROTECTIVE GROUND
7 SIGNAL GROUND
4 REQUEST TO SEND
5 CLEAR TO SEND
6 DATA SET READY
8 DATA CARRIER DETECT
20 DATA TERMINAL READY
2 TRANSMIT DATA A
3 RECEIVE DATA A
12 TRANSMIT DATA B
22 RECEIVE DATA B
23 EXTERNAL TX CLOCK A
17 RECEIVE CLOCK A
25 EXTERNAL TX CLOCK B
18 RECEIVE CLOCK B
15 TRANSMIT CLOCK A
21 TRANSMIT CLOCK B
Appendix C - Cabling Diagrams
121