DMP Electronics 893A Installation Sheet

Description

The 893A is a dual telephone line supervision module that allows DMP Panels to indicate a phone line failure to the
premises and central station, and switch to secondary phone line communication when the primary line is down.

Compatibility

The 893A is compatible with XR100/XR500 and XR150/XR350/XR550 Series Panels.

Phone Line Monitor

The 893A uses a phone line monitor for the main and backup phone lines. Before sending a report, the 893A verifies
that the main phone line is working. If the line is bad, the module tests the backup phone line. The 893A sends the
report on the first working phone line.
The phone line monitor has a two-minute trouble delay and a one-minute restore delay. Phone line trouble is
displayed in the keypad Status List as a System Trouble. At least one keypad on the system must be programmed to
display system troubles in the Status List.
893A J4 MAIN
to Phone Block

Two Line Digital Dialer

You can configure the 893A to provide two lines of digital dialer for XR100/XR500 and XR150/XR350/XR550 Series
panels. The MAIn modular jack is used for the primary dialer. The BAckuP modular jack is used for the secondary
digital dialer line.
CAUTION - To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord, such as DMP Model
356 Series Phone Cords.

Processor Fail Buzzer

The 893A Module also monitors the panel cPu and sounds a trouble buzzer whenever the panel processor is reset
using J16 or the processor stops functioning. The 893A Module also monitors the keypad bus and sounds a trouble
buzzer whenever the keypad bus fails to operate.

Jumper Settings

There are two sets of jumpers on the 893A Module. For Digital Dialer, set both jumpers, J1 and J2, to DD. Refer to
Figure 1 for jumper locations.
893A Dual Phone Line Module
893A P3 PANEL
to Panel J3 Phone Line Connector
PANEL
P3
K4 K3
DD
J1
MPX
F2 F1
DD
J2
MPX
J4 J5
MAIN BACKUP
893A J5 BACKUP
to Phone Block
Figure 1: 893A Layout
InstallatIon sheet
893A P10
connector
to Panel J10
P10
connector
Buzzer
K2
DS1