Connector and Cable Specifications

This appendix includes specifications for the Cisco 1120 Connected Grid Router connectors, adapters, and compatible cables, and is organized into the following sections:

■blank.gifConnector Specifications

■blank.gifCable and Adapter Specifications

Connector Specifications

■blank.gifAlarm Port

■blank.gifConsole Port

■blank.gifCombo Ports

■blank.gifSFP Ports

■blank.gifSerial Port

■blank.gifPower Connectors

Alarm Port

For detailed information about the alarm ports, see Router Hardware Description. The alarm port is an 8-way RJ-45 alarm connector.

Table 1 Alarm Port Specification
Pin (8-Way RJ-45 Alarm Connector)
Alarm Signal Description

1

Alarm1_IN

2

Alarm2_IN

3

Normally Closed (NC)

4

Alarm3_IN

5

Alarm4_IN

6

Normally Closed (NC)

7

Alarm_OUT_Common

8

Alarm_IN_Common

Console Port

For detailed information about the console port, see Router Hardware Description.

Table 2 Console/Auxiliary Port Specification
Pin
Signal Name
Signal Description

1

RTS

Output

2

DTR

Output

3

TXD

Output

4

GND

–

5

GND

–

6

RXD

Input

7

DSR/DCD

Input

8

CTS

Input

Combo Ports

For detailed information about the combination ports, see Router Hardware Description.

Copper Interface—Combination Port (SFP and GE Ethernet)

 

Table 3 Combination Port Specification —Copper Interface

Pin
1000Base-T
100Base-TX/10Base-T

1

TX A+

TX DATA+

2

TX A-

TX DATA-

3

RX B+

RX DATA+

4

TX C+

N/C

5

TX C-

N/C

6

RX B-

RX DATA-

7

RX D+

N/C

8

RX D-

N/C

SFP Ports

SFP Interface—Combination Port (SFP and GE Ethernet)

For detailed information about the combination ports, see Router Hardware Description.

 

Table 4 SFP Port Specification

Pin
Signal Name
Input/Output
Signal Description

1

VeeT

–

GND

2

TxFault

Output

Connects to GPIO

3

TxDisable

Input

Driven from GPIO

4

MOD-DEF(2)

Bidir

Bidirectional. Connects to I2C data

5

MOD-DEF(1)

Input

Connects to I2C Clock

6

MOD-DEF(0)

Output

Grounded in SFP, indicates SFP is present

7

Rate Select 1

–

–

8

LOS

Output

Connects to GPIO

9

VeeR

–

GND

10

VeeR

–

GND

11

VeeR

–

GND

12

RD-

Output

Connects to PHY

13

RD+

Output

Connects to PHY

14

VeeR

–

Gnd

15

VccR

–

3.3V

16

VccT

–

3.3V

17

VeeT

–

GND

18

TD+

Input

Driven from PHY

19

TD-

Input

Driven from PHY

20

VeeT

–

GND

1 Rate Select is an optional SFP input that controls receiver bandwidth when used with Fibre Channel applications. This pin is unconnected.

Serial Port

For detailed information about the combination ports, see Router Hardware Description.

Table 5 Serial Port Specification

RS-232 1
Pin
Signal Description (Abbreviation)
DTE
DCE

1

DCE ready, ring indicator (DSR/RI)

<—

—>

2

Received line signal detector (DCD)

<—

—>

3

DTE ready (DTR)
—>

<—

4

Signal ground (COM)

–

–

5

Received data (RxD)

<—

—>

6

Transmitted data (TxD)
—>

<—

7

Clear to send (CTS)

<—

—>

8

Request to send (RTS)
—>

<—

1 The RS232 pinouts use the EIA-561 standard.

Power Connectors

For detailed information about the router power supply terminal connectors (AC and DC input terminals), see Router Hardware Description.

Cable and Adapter Specifications

SFP Cable

For detailed information about the SFP ports, see Router Hardware Description.

 

Table 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)

1000BASE-LX/LH

1310

MMF 1

62.5/125

500

1804 feet (550 m)

50/125

400

1804 feet (550 m)

50/125

500

1804 feet (550 m)

SMF

G.6522

—

32,808 feet (10,000 km)

1000BASE-EX

1310

SMF

—

—

131,234 feet (40,000 km)

1000BASE-ZX

1550

SMF

G.652 2

—

43.4 to 62 miles
(70 to 100 km) 2

1000BASE-BX-U

1310

SMF

—

—

32,808 ft (10,000 m)

1000BASE-BX-D

1490

SMF

—

—

32,808 ft (10,000 m)

1 A mode-conditioning patch cord is required. Using an ordinary patch cord with MMF or 1000BASE-LX/LH SFP modules and a short link distance can cause transceiver saturation and an elevated bit error rate (BER). When using the LX/LH SFP module with 62.5-micron diameter MMF, you must also install a mode-conditioning patch cord between the SFP module and the MMF cable on both the sending and receiving ends of the link. The mode-conditioning patch cord is required for link distances greater than 984 feet (300 m).

2 1000BASE-ZX SFP modules can send data up to 62 miles (100 km) by using dispersion-shifted SMF or low-attenuation SMF; the distance depends on the fiber quality, the number of splices, and the connectors.