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D8125INV
Troubleshooting
D8125INV Operation and Installation Guide
49690E Page 30 © 2005 Bosch Security Systems
Symptom Diagnosis Remedy
Point response is correct at the
D8125INV, but incorrect at the
control panel (for example, RF
point is in trouble when it should
be faulted, etc.).
Point programming at control
panel is incorrect.
Make sure point programming at
control panel is correct, especially
the Point Response Type.
Remember that regardless of
transmitter type or configuration
of an external circuit, the
D8125INV will always report a
fault to the control panel as a short,
and a tamper as an open. In most
cases, a point response type that
gives trouble on open is desired.
RF points change state
unexpectedly, with no actual state
change at transmitter
Two or more transmitters are
programmed as the same RF point
number.
Transmitters send RF point status
(fault/tamper/normal) at status
change and at 1 min. or 5 min.
check-in intervals. If two duplicate
points are in different states, the RF
point state at the D8125INV may
keep changing as the check-in
transmissions from each
transmitter are received. If
duplicate RF points are in the same
state, RF point state at the
D8125INV will stay the same.
There is another, nearby
D8125INV system with
transmitters, programmed with the
same System ID.
The system ID is shipped at a
random value of 000-255.
D8125INV systems that are within
RF range of each other must have
different System ID's, to avoid
interaction of the systems. That's
why it's a good idea to check for
duplicate System ID's if two
D8125INVs are used. Remember
that if the System ID is changed, all
transmitters in that D8125INV
system will have to be
reprogrammed as new.
in RF Diagnostics
Received signal level for that point
is low.
A second FA400/receiver can be
added to a D8125INV and
mounted in a different location to
increase range An Inovonics
FA570/575 high-power repeater
may be used to increase range to a
greater degree.
in RF Diagnostics
D8125INV has not received
enough recent transmissions from
that RF point to give an 'OK' or
'BAD' signal indication; Several
transmissions are required. The
signal indication will start out as '?'
after power up, after programming
an RF point, or after an RF point
has gone missing.
Cause several transmissions to
update signal level. About 4 alarms
or tampers and 4 restorals spaced 5
seconds apart will cause enough
transmissions to get an accurate
signal indication. Without
activations, it will take about a
half-hour to get signal strength
readings if transmitter Check-In
time is set to 1 minute. It will take
about 2 hours if Check-In time is
set to 5 minutes.