Detection Systems
Abacus User Guide
Chapter 4.32
A plug on DS
communicator has
detected that a
telephone as been
connected to the BT
line and the receiver
has been lifted off its
cradle. (Normally
used on incoming
calls bard lines).
A plug on DS
communicator has
detected a ring in
tone on the BT line.
(Normally used on
incoming calls bared
lines).
A plug on DS
communicator has
signalled to central
station and has failed
to obtain an
acknowledge signal
from the receiver.
The receiver may
have been engaged.
A plug on DS
communicator has
detected that the BT
line has been
disconnected or
shorted out.
A plug on DS
communicator has
detected no tones on
the BT line.
A plug on DS
communicator has
successfully
communicated with
the central station
receiver and
received the
acknowledge tone
back.
The system detected
an irregularity
during a self-test
function and found it
necessary to carry
out a reset. It also
carries out a reset at power up.
A tamper was detected on the front door connected to zone 1 (i.e. the wires
to the front door detector has been cut).
A tamper has been detected on the Bell circuit or the Bell disconnected.
The panel has detected that the control panel has been opened.
The panel has detected that the positive auxiliary tamper loop has been
broken. This is used normally to tamper any auxiliary units i.e. internal
loud speakers. (Abacus 8/80, Abacus 15R and Abacus 72 panels only).
The panel has detected that the negative auxiliary tamper loop has been
broken. This is used normally to tamper any auxiliary units i.e. remote
power supply units. (Abacus 8/80, Abacus 15R and Abacus 72 panels
only).
The panel has detected a tamper on the wiring to the REM unit or the REM
unit cover was removed. (On the larger abacus systems, a REM number
will be displayed to indicate which REM).
Modem (remote access via the telephone line) was attempted without
proper authority.
Modem (remote access via telephone line) was performed.
The Engineer set the installation.
