D9068
|
Operation and Installation Guide | 1.0
Overview
.
Bosch Security Systems, Inc. | 3/13 | F01U071094-0
7
9
1.2.8 History Buffer
The D9068 has a history buffer that
retains up to 100 events. Each event is
tagged with the date and time of
occurrence. This buffer can be viewed
when a D7033/FMR-DACT-KEYPAD is
attached to the D9068. When the buffer
is full, old events are discarded to
make room for new events. A watchdog
reset is entered in the buffer and does
not reset the buffer.
The history buffer can clear
when the system loses power
for more than 5 min.
1.2.9 General Specifications
Table 4: General Specifications
Storage/Operating
Temperature
+32°F to +120°F
(0°C to +49°C)
Lightning Protection
Metal oxide
varistors (MOVs)
and spark gaps
provide protection
from lightning
surges and static
discharges for
inputs and
telephone
interface.
1.2.10 Parts List
identifies the parts
shipped with the D9068.
Table 5: Parts List
Quantity
Part
1
Enclosure
1
Self-tapping screw
1
Self-tapping screw for cover
1
D9068 PC Board in static bag
4
PC Board Mounting screws
4
PC Board mounting clips
4
Sets cable assemblies
2
Sets telco cable assemblies
RJ31X
1
Ground wire
5
2.21 k
Ω end-of-line (EOL) resistors; UL
Listed; Bosch (P/N: 25899)
1
Light pipe
for the ground wire
connections. Refer to
on page 12 for the cable
assembly connections.
1.2.11 Printed Circuit Board (PCB)
Layout
PCB.