InstallatIon sheet
893A Dual Phone Line Module
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.
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.
Figure 1: 893A Layout
893A J4 MAIN
to Phone Block
893A J5 BACKUP
to Phone Block
893A P3 PANEL
to Panel J3 Phone Line Connector
DS1
Buzzer
PANEL
P3
MAIN
BACKUP
J4
J5
F2
F1
J1
DD
MPX
K4
K3
J2
DD
MPX
K2
P10
893A P10
connector
to Panel J10
connector
