Cisco MWR-1941-DC-2T1 Hardware Installation Guide - Page 81

EIA/TIA-449 Serial Cable Assembly

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Appendix B Cable Specifications Serial Connection Signals and Pinouts The network end of the EIA/TIA-449 adapter cable provides a standard 37-pin D-shell connector. (See Figure B-9.) EIA/TIA-449 cables are available as either DTE (DB-37 plug) or DCE (DB-37 receptacle). Figure B-9 EIA/TIA-449 Adapter Cable Connectors, Network End DTE DCE H1344a EIA/TIA-449 Serial Cable Assembly Figure B-10 shows the EIA/TIA-449 serial cable assembly. Table B-10 lists the DTE pinout and Table B-11 lists the DCE pinout. Arrows indicate signal direction: -> means DTE to DCE and J2-4 SD+ -> J2-22 SD-

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B-15
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
78-15827-06B0
Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
The network end of the EIA/TIA-449 adapter cable provides a standard 37-pin D-shell connector.
(See Figure B-9.) EIA/TIA-449 cables are available as either DTE (DB-37 plug) or DCE (DB-37
receptacle).
Figure B-9
EIA/TIA-449 Adapter Cable Connectors, Network End
EIA/TIA-449 Serial Cable Assembly
Figure B-10
shows the EIA/TIA-449 serial cable assembly.
Table B-10
lists the DTE pinout and
Table B-11
lists the DCE pinout. Arrows indicate signal direction: —> means DTE to DCE and <—
means DCE to DTE.
Figure B-10
EIA/TIA-449 Serial Cable Assembly
H1344a
DTE
DCE
Table B-10
EIA/TIA-449 DTE Cable Pinout (DB-60 to DB-37)
60-Pin
Signal Name
Note
Direction
37-Pin
Signal Name
J1-49
J1-48
MODE_1
GND
Shorting group
J1-51
J1-52
GND
MODE_DCE
Shorting group
J1-46
Shield_GND
Single
_
J2-1
Shield GND
J1-11
J1-12
TXD/RXD+
TXD/RXD–
Twisted pair no. 6
—>
—>
J2-4
J2-22
SD+
SD–
J1-24
J1-23
TXC/RXC+
TXC/RXC–
Twisted pair no. 9
<—
<—
J2-5
J2-23
ST+
ST–
J1-28
J1-27
RXD/TXD+
RXD/TXD–
Twisted pair no. 11
<—
<—
J2-6
J2-24
RD+
RD–
H1973
60-pin connector (J1)
37-pin connector (J2)
Connectors are not to scale.
J2-19
J2-37
J2-20
J2-1
J1-46
J1-45
J1-16
J1-15
J1-1
J1-30
J1-31
J1-60