B-4
Cisco 1120 Connected Grid Router Hardware Installation Guide
OL-26438-02
Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
Serial Port
For detailed information about the combination ports, see the chapter
Router Hardware Description
.
Power Connectors
For detailed information about the router power supply terminal connectors (AC and DC input
terminals), see the chapter
Router Hardware Description
.
Cable and Adapter Specifications
SFP Cable
For detailed information about the SFP ports, see the chapter
Router Hardware Description
.
Table B-5
Serial Port Specification
RS-232
1
1.
The RS232 pinouts use the EIA-561 standard.
RS-485 Full
Duplex
RS-485 Half
Duplex
Ethernet
Pin
Signal Description (Abbreviation)
DTE
DCE
Signal
Dir
Signal
Dir
10/100
10000
1
DCE ready, ring indicator
(DSR/RI)
<—
—>
–
–
–
–
RX+
TX/RX1+
2
Received line signal detector
(DCD)
<—
—>
–
–
–
–
RX-
TX/RX1-
3
DTE ready (DTR)
—>
<—
–
–
–
–
TX+
TX/RX2+
4
Signal ground (COM)
–
–
COM
–
COM
–
–
TX/RX3+
5
Received data (RxD)
<—
—>
TX+
—>
TX/RX+
<—>
–
TX/RX3-
6
Transmitted data (TxD)
—>
<—
RX+
<—
–
–
TX-
TX/RX2-
7
Clear to send (CTS)
<—
—>
RX-
—>
TX/RX-
<—>
–
TX/RX4+
8
Request to send (RTS)
—>
<—
TX-
<—
–
–
–
TX/RX4-
Table B-6
SFP Port Cabling Specification
SFP Module
Wavelength
(nm)
Cable
Type
Core size/
Cladding Size
(micron)
Modal
Bandwidth
(MHz/km)
Cable Distance
1000BASE-SX
850
MMF
62.5/125
160
722 feet (220 m)
62.5/125
200
902 feet (275 m)
50/125
400
1640 feet (500 m)
50/125
500
1804 feet (550 m)
3281 ft (1000 m)