ADTRAN 810 Plus manual Alarm Relay Connection, Mon, Alarm Relay Connector Pinout Name Description

Chapter 2. Installation

Alarm Relay Connection

This connection alerts the user when a selected alarm condition exists. The four-pin, removable terminal block connects with external wiring. To make the appropriate connections, remove the block, connect wiring as needed, and return the terminal block to the connector socket. Clear the alarm con- dition by pressing the Alarm Cut-Off (ACO) switch located on the font panel of the ATLAS 810PLUS.

After the appropriate connections have been made, tighten the screws using a flathead screwdriver before reinserting the terminal block into the rear panel of the ATLAS 810PLUS.

Connection

Table 2-4shows the pinout for the Alarm Relay connector.

Table 2-4. Alarm Relay Connector Pinout

Pin	Name	Description
1	Normally Closed (NC)	Opens when a selected alarm condition
		is present.
2	Normally Open (NO)	Closes when a selected alarm condition
		is present.
3	Common (COM)	Common connection between external
		circuitry and NC or NO terminal.
4	Chassis Ground (GND)

Mon

The MON (monitor) test jack provides a bridged access jack for non-intru- sive monitoring of the T1 circuits receiving data. When connected to this jack, the test equipment should be configured for a bridged termination.

61200266L1-1 ATLAS 810PLUS User Manual 2-7