Cisco MWR-1941-DC-2T1 Hardware Installation Guide - Page 78

EIA/TIA-232 Connections, EIA/TIA-232 Serial Cable Assembly

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Serial Connection Signals and Pinouts Appendix B Cable Specifications EIA/TIA-232 Connections EIA/TIA-232 supports unbalanced circuits at signal speeds up to 64 kbps. The network end of the adapter cable is a standard 25-pin D-shell connector known as a DB-25. (See Figure B-7.) The router console and auxiliary ports also use EIA/TIA-232 connections; however, the serial module ports support synchronous connections, and the console and auxiliary ports support asynchronous connections. Figure B-7 EIA/TIA-232 Adapter Cable Connectors, Network End DTE DCE H1343a EIA/TIA-232 Serial Cable Assembly Figure B-8 shows the EIA/TIA-232 serial cable assembly. Table B-8 lists the DTE pinout and Table B-9 lists the DCE pinout. Arrows indicate signal direction: -> means DTE to DCE and

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B-12
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
78-15827-06B0
Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
EIA/TIA-232 Connections
EIA/TIA-232 supports unbalanced circuits at signal speeds up to 64 kbps. The network end of the
adapter cable is a standard 25-pin D-shell connector known as a DB-25. (See
Figure B-7
.) The router
console and auxiliary ports also use EIA/TIA-232 connections; however, the serial module ports support
synchronous connections, and the console and auxiliary ports support asynchronous connections.
Figure B-7
EIA/TIA-232 Adapter Cable Connectors, Network End
EIA/TIA-232 Serial Cable Assembly
Figure B-8
shows the EIA/TIA-232 serial cable assembly.
Table B-8
lists the DTE pinout and
Table B-9
lists the DCE pinout. Arrows indicate signal direction: —> means DTE to DCE and <— means DCE to
DTE.
Figure B-8
EIA/TIA-232 Cable Assembly
H1343a
DTE
DCE
Table B-8
EIA/TIA-232 DTE Cable Pinout (DB-60 to DB-25)
60-Pin
Signal
Note
Direction
25-Pin
Signal
J1-50
J1-51
J1-52
MODE_0
GND
MODE_DC
E
Shorting group
J1-46
Shield
GND
Single
J2-1
Shield
GND
J1-46
Shield
GND
Single
J2-1
Shield
GND
H1972
60-pin connector (J1)
25-pin connector (J2)
Connectors are not to scale.
J2-13
J2-25
J2-14
J2-1
J1-46
J1-45
J1-16
J1-15
J1-1
J1-30
J1-31
J1-60