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Bosch Security Systems | December 8, 2004

LTC 8100, LTC 8200, LTC 8300 Series | Instruction Manual | Installation Procedure

6.3.1 Mounting Ear Removal

If the LTC 8300 Series is to be used as a desk top

unit, remove each mounting ear by removing the

screw holding the mounting ear to the enclosure

chassis (see Figure 3).

Figure 3 Cover and Rack Brackets Removal

6.3.2 Video Termination Selections

The video input termination DIP switches are located

toward the rear of the circuit board. Note that the

Factory Default Settings are all ON (input terminated

with 75Ω). Only those switches associated with looping

video inputs need to be changed to OFF (unterminated).

6.3.3 CPU Module Selections

To access the circuit board, remove the cover and lid as

described in the COVER REMOVAL Section. The batteries

and the two 8-position system configuration DIP switches

(S0201 and S0202) near the front of the unit will now be

visible. Change only the desired CPU DIP switches

based on the features described in the

FACTORY DEFAULT

SETTINGS

Section of this manual.

6.3.4 Battery Replacement

If the batteries have reached the end of their useful life,

the Time and Date portion of on-screen display will

begin to alternate with an indication of ?? ?? ??. The

LED on the front panel of the unit will also light,

indicating a low battery condition. Access the circuit

board as described in the INTERNAL SELECTIONS

Section above, then follow the instructions found in the

MAINTENANCE INFORMATION Section of this manual

for replacement procedures.

6.4 Termination Practices

Video from every camera should be terminated with a

75Ω resistance. Each video line should be terminated

exactly once. If video from a camera is going to several

devices, only the last device on the video line should be

terminated.

6.4.1 Video Terminations

The main circuit board has DIP switches to select the

termination of each video line. To terminate an input line,

ensure that the appropriate DIP switch on the video

module is ON (Factory Default Setting). If non-

terminated operation is required for looping purposes,

turn the switch OFF. See the TABLE below to determine

the DIP switch numbers that correspond to video input.

Video Switch Switch Systems

Inputs No.

1-4 S0801 1-4 LTC 8100, LTC 8200, LTC 8300

5-8 S0802 1-4 LTC 8100, LTC 8200, LTC 8300

9-12 S0801 5-8 LTC 8200, LTC 8300

13-16 S0802 5-8 LTC 8200, LTC 8300

17-20 S0803 1-4 LTC 8300

21-24 S0804 1-4 LTC 8300

25-28 S0803 5-8 LTC 8300

29-32 S0804 5-8 LTC 8300

Video Input Termination Switches

If looping video inputs are desired, the LTC 8200 and the

LTC 8300 Series require an optional LTC 8808/00 patch

panel (for the LTC 8100 Series, the looping BNCs are

included on the unit). A single LTC 8808/00 provides

looping capability for all 16 (LTC 8200) or 32 (LTC 8300)

video inputs. If necessary, refer to the Section on

LOOPING VIDEO CONNECTIONS below.

Just like camera inputs, monitor outputs on the Allegiant

system are designed to be terminated. Each monitor

output expects to be connected to a 75Ω load. This is the

load typically provided by a monitor. If a monitor output

line is looped through several monitors or other

equipment, ensure that only the last unit on the line is

terminated.

CAUTION: Lithium Battery

Danger of explosion if battery is incorrectly replaced.

Replace only with the same or equivalent type

recommended by the manufacturer. Dispose of used

batteries according to the battery manufacturer’s

instructions.

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