4.0 Testing The System; Local Walk Test (Command 44); Missing Multiplex Points; Extra Multiplex Points - Bosch D8125MUX Operation And Installation Manual

Multiplex bus interface
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.
Control the relay output on each DS7465 using any of
the following control panel options:
Relay follows Point for Points 9 through 64
(Points 9 through 34 for D7212GV2/D7212G)
(refer to the Relay Response Type section in the
control panel's program entry guide).
When the DS7465i is programmed to
follow a point, the relay can have a
delayed response of 2 to 5 sec.
Area or Panel Wide Relay functions
Schedules (skeds)
[Command] [5] [4]
Remote Programming Software control
Enter Key Relay Number (refer to Command
Center Assignments in the control panel's
program entry guide)
BFSK Relay (D7412GV2, D7212GV2, D7412G,
D7212G, D7412, and D7212 only)

4.0 Testing the System

4.1

Local Walk Test (Command 44)

While disarmed, check the security system's status
by entering [COMMAND] [4] [4] at the D1255 or
D1260 Keypad. This command initiates a System
Walk Test. Each point of protection is scanned by the
control panel, and points are displayed on the D1255
as they are activated. An accompanying tone is heard
from the keypad to alert the user of an activated point.
When all the burg points are tested, 0 POINTS TO
TEST appears and the system returns to normal
operation. Points failing to report during the Walk Test
can be viewed by pressing [NEXT] until the display
reads VIEW UNTESTED ? Press [NEXT] to view the
faulty points.
Refer to the Security System Owner's Manual
(P/N: 71-06633-000) for more details on the Local
Walk Test features.
4.2

Missing Multiplex Points

Multiplex points appearing as missing on the display
are usually not connected properly to the multiplex
bus, not programmed correctly, nor have incorrect
DIP switch settings.
Check the multiplex bus wiring to the missing point
and its programming.
Bosch Security Systems, Inc. | 9/08 | F01U034973-02
D8125MUX | Operation and Installation Guide | 4.0
4.3
Extra Points occur when the D8125MUX sends point
transitions back to the control panel and the control
panel does not have a Point Index programmed for it.
Extra multiplex points are reported to the control
panel as a trouble event at the keypad or central
station. The keypad shows the default custom text for
the point number as programmed in the RADXPNTS
(handler).
When an extra point is activated during the Service
Walk Test, it appears as an extra point in the control
panel's event log and at the local printer (if installed).
Use VIEW LOG to view the control panel's event log.
Once an extra point is identified, check the
programming to see if it has a Point Index
programmed. Determine if the point belongs in the
system.
Refer to Section 5.0 Troubleshooting on page 22 for
more information.
4.4
When the Loop Input (+) is in a normal condition, a
ground fault on the Loop Input (+) terminal is initially
signaled as a point trouble. A ground fault condition is
signaled by the system after the normal 30 second
ground fault detect time. To witness the ground fault
indication on the keypad, the point trouble must be
cleared from the display by pressing [Command] [4]
on a D1255 and D1260 or [Trouble Silence] on a
D1256. The control panel History Log, shown on a
keypad or sent to the central station, also indicates
the ground fault detection. An Alarm condition is still
indicated even during the occurrence of a ground
fault condition.
When the loop is in an open position, a ground fault
on the Loop Input (+) terminal disrupts supervision.
An open on the loop does not indicate a new fault,
because the ground fault is interpreted as an open. A
short might indicate an Alarm condition depending on
the control panel's programming.

Extra Multiplex Points

Ground Fault Notification on
Multiplex Devices
Testing the System
21

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