D8125
D8125 Operation and Installation Guide
Page 11
© 2004 Bosch Security Systems, Inc.
74-04247-000-N
Overview
2.2.1
D8125 POPEX/D8127 and D9127 POPIT Modules
D8127 and D9127 POPITs use the D8125 POPEX Module to report to the panel. Each D8125 supports up to 119 POPIT
points. Connect two D8125 Modules to the D9412G to bring the combined total number of POPIT and on-board points to
246. Points 9 to 127 connect to the first POPEX Module. Points 129 to 247 connect to the second POPEX Module. The
D9412G reserves Points 128 and 248 for internal use. The panel only annunciates activity for each POPIT, not each detection
device connected to the sensor loop.
There are two versions of the D8127 and D9127 Modules. Both module enclosures are made of UL Listed fire resistant
material. D8127T and D9127T Modules contain tamper switches. D8127U and D9127U Modules include untampered covers.
Unless the module is mounted in a tampered enclosure, UL requires D8127T and D9127T Modules for certificated accounts.
2.2.1.1
Listings
The D8125 POPEX and the D8127 and D9127 POPIT Modules are UL Listed for Local or Police Connected Burglar Alarm,
Central Station Burglar Alarm, Household Burglar Alarm, Central Station Fire, Local Fire, Remote Station Fire, Household
Fire, and Electrically Actuated Transmitter Applications.
See the D9412G/D7412G Approved Applications Compliance Guide to determine the required equipment and enclosures for
the application.
2.3
D7212G Point Expansion
The D7212G can use POPIT (
P
oint
o
f
P
rotection
I
nput
T
ransponder) Modules to provide up to 32 off-board points,
bringing the total number of points the D7212G can monitor to 40.
POPITs connect to supervised two-wire data expansion loops run from POPIT to POPIT throughout the premises. Data
expansion loops connect to a D8125 POPEX (
P
oint
o
f
P
rotection
Ex
pander) Module. POPEX Modules connect to the point
bus on the panel, Terminals 3 and 9 for powerand Terminals 27 and 28 for data.
If a programmed POPIT is disconnected from the expansion loop, a missing condition appears immediately and the event is
logged. The missing condition may also be transmitted to a central station or printed to an on-site printer, if programmed to
do so. See the D7212G Program Entry Guide (P/N: 4998138538) for programming options.
Extra Point events are generated when a POPIT is connected to the data expansion bus but does not have a Point Index
assigned to it. Shown below are instances when an EXTRA POINT event will or will not be generated.
If a POPIT is connected to the data expansion bus but does not have a Point Index assigned to it and…
· the data expansion bus becomes disconnected, no trouble condition is annunciated or displayed at command
centers and the EXTRA POINT event will not be generated. (However, POPIT’s that are programmed with a
Point Index will immediately go missing.)
· the data expansion bus restores to a normal condition from an open, a trouble condition will annunciate and
display at the command center. In addition, an EXTRA POINT event is generated, logged, and may be
programmed to be sent to the central station or printed to an on-site printer.
· the point input goes from an electrically normal state to an open or shorted state, the command center will
neither annunciate nor display a trouble condition. No EXTRA POINT event will be generated.
· the system is presently in a Service Walk Test and the point input goes from an electrically normal state to an open
or shorted state, the command center will neither annunciate nor display a trouble condition. However, an
EXTRA POINT event will be logged and printed to an on-site printer, if programmed. Note: The Service Walk
Test will never display a points’ electrical state as ‘Extra’.
If the positive or negative leg of the data expansion bus is shorted to earth ground and Ground Fault Detect is enabled, a
general GROUND FAULT event is generated.
If the positive or negative leg of the data expansion bus becomes disconnected then all POPIT’s beyond the break will report
as a missing condition.
If the data expansion bus becomes shorted then all POPIT’s will report a missing condition and a PT BUS TROUBLE event is
generated. When the data expansion bus restores from a shorted condition, a PT BUS RESTORE event is generated and if
there are POPIT’s connected to the data expansion bus without a Point Index assigned to it, then an EXTRA POINT event
will be generated.
