Bosch LTC 8714 Manual de instrucciones descargar pdf (Pagina 13)

LTC 4600 Series | Instruction Manual | Installation

Bosch Security Systems | 21 June 2004

4.7 LTC 4671 Series Modules for

System4 / Allegiant Keyboard

Transmission

1. The supplied 120Ω resistor must be installed across

the external data connections when these fiber optic

modules are used with certain controller devices.

Follow the guidelines below, however, because of

differences between the hardware of new and old

controller units, these cases are not absolute. If a

configuration does not work when first connected

without using a termination resistor, try adding the

termination resistor across the data connections of

the fiber optic module located at the controller site.

A termination resistor is typically required when a

module is connected to the following controller

devices:

• Allegiant LTC 8100 Series main CPU bays

• Allegiant LTC 8200 Series main CPU bays

• Allegiant LTC 8300 Series main CPU bays

• Allegiant LTC 8900 Series main CPU bays

•LTC 8714 Series Allegiant Keyboard Expander

accessory units sold prior to 2002

•LTC 2604 Series Multiplexer Keyboard `

Expander

A termination resistor is typically NOT required when

a module is connected to the following controller

devices:

• Allegiant LTC 8500 Series main CPU bays

• Allegiant LTC 8600 Series main CPU bays

• Allegiant LTC 8800 Series main CPU bays

•LTC 8714 Series Allegiant Keyboard Expander

accessory units sold during or after 2002

If the supplied resistor is damaged or lost, any locally

obtained conventional 1/4 watt carbon resistor between

120Ω and 390Ω should suffice.

2. The POWER LED will light when AC power is

applied to the unit.

3. The DATA XTMR LED will flash as the external

data received by the unit is being optically

transmitted.

4. The DATA REC LED will flash as optical data is

being received by the unit.

IntuiKey Series

Keyboard

Data Cable

LTC 4671

RS485

DATA

REC

POWER

DATA

XTMR

POWER

- 2

+12VDC - 1

- 4

- 3

-- Data - 2

+ Data - 1

BOSCH

POWER

SUPPLY

POWER

SUPPLY

LTC 8557

Junction Box

Pro

BOSCH

ALLEGIANT Video System

CODE OUT

ALARM

STATUS

BATTERY LOW

POWER

Up to 4km (2.5 mi) using

62.5/125 micron

multimode fiber optic cable

LTC 8557

Junction Box

To Allegiant Keyboard Port

Using Keyboard Data Cable

Typical Allegiant Main CPU Bay or Allegiant Keybord Port Expander

LTC 8557

Junction Box

Refer to text

regarding supplied

120Ω resistor

LTC 4771

RS485

TRANSCEIVER

XTMR

PWR

REC

BOSCH

POWER

IN from

RACK

Side View

of Rear

Front

View

BOSCH

MONITOR

Separate Video

Transmission Link

1- Data "+"

2- Data "-"

LTC 4671/00

Rack-mount Model

(in LTC 4637 Card Cage)

Figure 8 LTC 4671 Series Stand-alone Transceiver and LTC 4671 Rack-mount Transceiver

Typical Configuration:

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20

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Bosch LTC 8714 Manual de instrucciones Pagina 13

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