T1 Installation - Barnett Engineering ProTalk LINK Operating Manual

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8. T1 INSTALLATION

STATUS
INPUT
1 2 3 4 5 6
The T1 module provides callout capability on a telephone line and/or a
mobile radio port. The radio port can also be used to operate a public
address system. In addition to communications functions, this module
also has 8 digital inputs that can be independently programmed to operate
as one of five different types:
 Standard digital
 Watchdog timer
 Interval timer
 Totalizer
 Accumulator
There are also 4 relay outputs that can be used for remote control; these
relays are controlled by incoming DTMF codes.
Connectors
Refer to Figure 21 for details of the connector pinouts.
Inputs
The eight digital inputs operate with a dry relay contact or open
collector to ground as shown in Figure 22. In the open state the input
is pulled high internally and in the ground state it is pulled to ground.
ALARM OUTPUT
1 2 3 4 5 6 7 8 1 2 3
OUTPUT 1 OUTPUT 2
7 8
Figure 20 T1 Module Front Panel
Figure 21 T1 Module Connections
4
OUTPUT 3 OUTPUT 4
T1 INSTALLATION
RADIO
TELCO
B1285-T1