CAB−232MT and CAB−232FC EIA/TIA−232 Serial
Cable Specifications
Document ID: 46800
Introduction
Prerequisites
Requirements
Components Used
Conventions
EIA/TIA−232 Speed and Distance Limitations
Serial Cable CAB−232MT
EIA/TIA−232 Serial Cable Assembly
EIA/TIA−232 DTE Cable Pinouts
Serial Cable CAB−232FC
EIA/TIA−232 DCE Cable Pinouts (DB−60 to DB−25)
Related Information
Introduction
This document provides the technical specifications for the EIA/TIA−232 serial cables.
Prerequisites
Requirements
There are no specific requirements for this document.
Components Used
This document is not restricted to specific software and hardware versions.
The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.
Conventions
For more information on document conventions, see the Cisco Technical Tips Conventions.
EIA/TIA−232 Speed and Distance Limitations
As with all signaling systems, EIA/TIA−232 signals can travel a limited distance at any given bit rate;
generally, the slower the data rate, the greater the distance.
The table below gives the EIA/TIA−232 speed and distance limitations.
Data Rate (Baud)
Distance (Feet)
Distance (Meters)
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J1−51 GND
J1−52 MODE_DCE
J1−46
Shield
GND
Shield GND Single
−
J2−1
J1−41
TxD/RxD
−−−>
J2−2 TxD
Shield
J1−36
Twisted pair
no. 5
−
−
Shield −
RxD/TxD
<−−−
J2−3 RxD
Shield
J1−42
Twisted pair
no. 9
−
−
Shield −
RTS/CTS
−−−>
J2−4 RTS
Shield
J1−35
Twisted pair
no. 4
−
−
Shield −
CTS/RTS
<−−−
J2−5 CTS
Shield
J1−34
Twisted pair
no. 10
−
−
Shield −
DSR/DTR
<−−−
J2−6 DSR
Shield
J1−45
Twisted pair
no. 11
−
−
−
Shield −
Circuit
Circuit GND
J2−7
Shield
J1−33
Twisted pair
no. 1
GND
−
−
−
Shield
DCD/LL
<−−−
J2−8 DCD
Shield
J1−37
Twisted pair
no. 12
−
−
Shield −
TxC/NIL
<−−−
J2−15 TxC
Shield
J1−38
Twisted pair
no. 8
−
−
Shield −
RxC/TxCE
<−−−
J2−17 RxC
Shield
J1−44
Twisted pair
no. 7
−
−
Shield −
LL/DCD
−−−>
J2−18 LTST
Shield
J1−43
Twisted pair
no. 2
−
−
Shield −
DTR/DSR
−−−>
J2−20 DTR
Shield
J1−39
Twisted pair
no. 3
−
−
Shield −
TxCE/TxC
−−−>
J2−24 TxCE
Shield
Twisted pair
no. 6
−
−
Shield −
1Any pin not referenced is not connected.
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Serial Cable CAB−232FC
This section presents the cable assembly and pinouts for the CAB−232FC serial cable.
The cable gender for this product (part number 72−0794−01) is Male DB−60 to Female DB−25, mode −
DCE.
This cable is used in the following systems: the Cisco 7000 family, Cisco 4000 series, Cisco 3600 series,
Cisco 2500 series, Cisco 1600 series, Cisco access servers, and AccessPro PC cards. This cable has a male
DB−60 connector on the Cisco end and a female DB−25 connector on the network end.
EIA/TIA−232 DCE Cable Pinouts (DB−60 to DB−25)
The table below shows the EIA/TIA−232 DCE cable pinouts (DB−60 to DB−25).
Note: The arrows indicate signal direction:
• −−−> indicates DTE to DCE
• <−−− indicates DCE to DTE
60 Pin
Signal
Description Direction 25 Pin Signal
J1−50
J1−51
MODE_0
Shorting
group
Single
−
−
−
−
J1−46 Shield
GND
Shield
GND
J2−1
GND
J1−36
RxD/TxD
<−−−
J2−2 TxD
Shield
J1−41
Twisted pair
no. 9
−
−
Shield −
TxD/RxD
−−−>
J2−3 RxD
Shield
J1−35
Twisted pair
no. 5
−
−
Shield −
CTS/RTS
<−−−
J2−4 RTS
Shield
J1−42
Twisted pair
no. 10
−
−
Shield −
RTS/CTS
−−−>
J2−5 CTS
Shield
J1−43
Twisted pair
no. 4
−
−
Shield −
DTR/DSR
−−−>
J2−6 DSR
Shield
J1−45
Twisted pair
no. 3
−
−
−
Shield −
J2−7
Circuit
Shield GND
Twisted pair
no. 1
Circuit
GND
−
Shield
J2−8 DCD
−
J1−44 LL/DCD
−−−>
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Shield −
J1−39
Twisted pair
no. 2
−
Shield −
TxCE/TxC
−−−>
J2−15 TxC
Shield
J1−40
Twisted pair
no. 7
−
−
Shield −
NIL/RxC
−−−>
J2−17 RxC
Shield
J1−33
Twisted pair
no. 6
−
−
Shield −
DCD/LL
<−−−
J2−18 LTST
Shield
J1−34
Twisted pair
no. 12
−
−
Shield −
DSR/DTR
<−−−
J2−20 DTR
Shield
J1−38
Twisted pair
no. 11
−
−
Shield −
RxC/TxCE
<−−−
J2−24 TxCE
Shield
Twisted pair
no. 8
−
−
Shield −
Related Information
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Updated: Jan 30, 2006
Document ID: 46800
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