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DataTalker Owner’s Manual
Appendix C - Cabling Diagrams
Channel Cables
DCE to Channel Cabling
(with EIA pass-through)
PIN NO.
1
2
3
4
5
6
7
8
20
22
25
1
2
3
4
5
6
7
8
20
22
25
To
DCE
Device
(Data
Communications
Equipment,
i.e., Modem)
CHASSIS GROUND (AA)
TRANSMIT DATA (BA)
RECEIVE DATA (BB)
REQUEST TO SEND (CA)
CLEAR TO SEND (CB)
DATA SET READY (CC)
SIGNAL GROUND (AB)
CARRIER DETECT (CF)
DATA TERMINAL READY (CD)
RING INDICATOR (CE)
OUT OF SERVICE/BUSY
PIN NO.
To
DATA/COMMAND
Connector
To
DCE
Device
(Data
Communications
Equipment,
i.e., Modem)
DTE to Channel cabling
PIN NO.
1
2
3
4
5
6
7
8
20
22
25
1
2
3
4
5
6
7
8
20
22
25
To
DTE
Device
(Data Terminal
Equipment,
i.e., Computer
Terminal)
CHASSIS GROUND (AA)
TRANSMIT DATA (BA)
RECEIVE DATA (BB)
REQUEST TO SEND (CA)
CLEAR TO SEND (CB)
DATA SET READY (CC)
SIGNAL GROUND (AB)
CARRIER DETECT (CF)
DATA TERMINAL READY (CD)
PIN NO.
To
DATA/COMMAND
Connector
DCE to Channel cabling
(without EIA pass-through)
PIN NO.
1
2
3
4
5
6
7
8
20
22
25
1
2
3
4
5
6
7
8
20
22
25
CHASSIS GROUND (AA)
TRANSMIT DATA (BA)
RECEIVE DATA (BB)
REQUEST TO SEND (CA)
CLEAR TO SEND (CB)
DATA SET READY (CC)
SIGNAL GROUND (AB)
CARRIER DETECT (CF)
DATA TERMINAL READY (CD)
RING INDICATOR (CE)
OUT OF SERVICE/BUSY
PIN NO.
To
DATA/COMMAND
Connector
To
DCE
Device
(Data
Communications
Equipment,
i.e., Modem)