Carrier Access 770-0125-AB Manual De Usuario

BROADway - Release 4.00

2-11

Installation

Cabling the Alarm Ports

Cabling the Clock Ports on the ITU Chassis

On the front panel of the chassis are two pairs of synchronization clock ports: CKIN-1 and CKOUT-1,
and CKIN-2 and CKOUT-2 (one pair is redundant for the other). CKIN-1 and CKOUT-1 are
connected to NSP-1, and CKIN-2 and

CKOUT-2

are connected to NSP-2.

Connect the CKOUT ports to provide the timing signal to a further piece of communications
equipment. The CKIN-1, CKOUT-1, CKIN-2, and CKOUT-2 ports are 75ohm BNC connectors.

Cabling the Alarm Ports

The ALARMS port supports four alarm contact connections: two inputs and two outputs. These
contacts can be used to provide additional external alarms (audible and visual) when an alarm occurs
on the BROADway system as well as to collect alarms arriving from external sources.

The ALARMS port is a female, DB15 connector.

The ALARMS port provides two alarm sense inputs, and two alarm generation outputs.

Alarm sense #1 and #2 (alarm inputs)—These are used to collect alarms coming from an
external source, such as other equipment, high water sensor, fire alarms, and so forth.

CKOUT-2

CKIN-2

NIP TX1

NIP TX2

TX2

TX1

TX3

CKOUT-1

TX4

NIP RX1

NIP RX2

RX3

RX1

RX2

RX4

CKIN-1

ALARMS

ACO

SCP-2

ETH-1

ETH-2

SCP-1

Connect a clock source

Connect a second clock source