Table Of Contents; Unpacking; Backbox Module; Service - Bosch LTC 7490 Installation Instructions Manual

EN

Table of Contents

1 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.1 Backbox Module . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3 DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.1 Environmental Air Space Information . . . . . . . . . .8
4.2 Backbox Module . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.3 Ceiling Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.3.1 Backbox Module Mounting in
Suspended Ceiling . . . . . . . . . . . . . . . . . . . . . . . .8
4.4 Address Switch Settings . . . . . . . . . . . . . . . . . . . . . . .9
4.5 Backbox Module Mounting . . . . . . . . . . . . . . . . . . .9
4.6 Installing the Backbox . . . . . . . . . . . . . . . . . . . . . . .10
4.7 Connecting Power, Signal, and Video . . . . . . . . . .10
4.7.1 Connecting Line Power . . . . . . . . . . . . . . . . . . .11
4.7.2 Connecting Biphase Signal Code . . . . . . . . . . .11
4.7.3 Connecting the AutoTracker (optional) . . . . . .12
4.7.4 Connecting the RS-232 / RS-485
Signal Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.7.5 Connecting the Video Cable . . . . . . . . . . . . . . .12
4.7.6 Connecting the Alarms and Relay Output . . . .12
5 MAINTENANCE/COMPONENT
REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
© 2003 Bosch Security Systems

1 UNPACKING

Unpack carefully. This is electromechanical equipment and
should be handled carefully.
Verify that the following items are included:
• LTC 7490/20C unit:
Backbox
Base Bracket Assembly
Trim Ring
If an item appears to have been damaged in shipment, replace
it properly in its carton and notify the shipper. If any items are
missing, notify your Bosch Security Systems, Inc. Sales
Representative or Customer Service Representative.
The shipping carton is the safest container in which the unit
may be transported. Save it for possible future use.
1.1

Backbox Module

The LTC 7490/20C Backbox Module houses the Camera
Module, and includes a bracket assembly for mounting onto a
ceiling tile, trim rings for attractive appearance, and an isolated
power supply.
Model Rated
No. Voltage
LTC 7490/20C 24 VAC
50/60 Hz
2

SERVICE

If the unit ever needs repair service, the customer should con-
tact the nearest Bosch Security Systems, Inc. Service Center for
authorization to return and shipping
instructions.
Service Centers
U.S.A.: Phone: 800-366-2283 or 408-956-3895
fax: 800-366-1329 or 408-956-3896
e-mail: NationalServiceCenter@ca.slr.com
Canada: 514-738-2434
Europe, Middle East & Asia Pacific Region:
32-1-440-0711
For additional information,
see www.boschsecuritysystems.com.

3 DIMENSIONS

mm
in
15.2
0.60
159.3
Ø
6.27
Figure 1: Dimensional Outline
(Camera Module Assembled in Backbox)
Introduction
Voltage Power at
Range Rated Voltage
21 to 30 15 W
175.9
Ø
6.93
164.1
6.46
87.5
3.45
188.5
Ø
7.42
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