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D8125MUX | Installation and Operation Guide | 5.0
5.0 Testing the System
5.1
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.
5.2
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.
5.3
Extra Multiplex Points
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 6.0 Troubleshooting on page 25 for
more information.
24
Testing the System
5.4
Ground Fault Notification on
Multiplex Devices
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.
Bosch Security Systems, Inc. | 12/15 | F01U034973-03
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