LTC 8555 Series Instruction Manual Installation

EN 13

 

 

The larger Allegiant models support Keyboard Expander accessory units. These accessory units are used with LTC 8557 Series Remote Hookup Kit, to provide additional keyboard connections to the system, as shown in FIGURE 5.

Large model Allegiant system main CPU bay

LTC 8714 Port

Expander

Standard Allegiant Keyboard Ports 1 to 8

Up to 8 Keyboards per

Expander

Up to 8 Keyboards

Junction box and

3 m (10 ft) cable supplied with LTC 8557 kit

Up to 1 .5 km (5000 ft) of user- supplied shielded twisted pair cable

(Belden 9841 or equivalent)

Junction box and

3 m (10 ft) data/

power cable supplied

power adapter

with keyboard

supplied with

 

LTC 8557 kit

 

Figure 5: Configuration using LTC 8714 Keyboard Expander unit (Refer also to Instructions supplied with LTC 8714

Keyboard Expander)

5.3LTC 8555/02 and LTC 8555/03 (RS-232 Protocol Model) Installation

5.3.1General

The RS-232 protocol versions of the LTC 8555 Series keyboards can be connected to either an Allegiant LTC 8712 Series Console Port Expander accessory unit, or the 9-pin Console or Printer (if equipped) RS-232 port on the back of the Allegiant system. The keyboard may be connected via hardwired cable, dial-up modem, or using another type of communication system conforming to standard RS-232 transmission.

keyboard numbers is necessary when priority-based restrictions, or other keyboard related lockouts, are assigned and used in the system.

The table below indicates which keyboard number will be assigned, based on the connection being used.

Keyboard Connection Type

Keyboard Number

Direct to Console port

1

Direct to Printer port

5

 

 

Port 1 of Expander, when

 

Expander is connected to Console port

1

 

 

For each keyboard being installed, an LTC 8557 Series Remote Hookup Kit (sold separately), user-supplied 9- pin mating connector, and user-supplied cable suitable for use with RS-232 signals is required.

Refer to the most applicable configuration diagram.

5.3.2Keyboard Number Assignments When Using RS-232 Model Keyboards

Use of RS-232 protocol keyboards does not increase the total number of keyboards that can be connected to an Allegiant switcher. When an RS-232 keyboard is connected in the system, a standard keyboard port will automatically become disabled. The disabled keyboard port number will be based on the interface connection type of the RS-232 keyboard. Keeping track of these

Port 2 of Expander, when

 

Expander is connected to Console port

2

 

 

Port 3 of Expander, when

 

Expander is connected to Console port

3

Port 4 of Expander, when

 

Expander is connected to Console port

4

 

 

Port 1 of Expander, when

 

Expander is connected to Printer port

5

Port 2 of Expander, when

 

Expander is connected to Printer port

6

 

 

Port 3 of Expander, when

 

Expander is connected to Printer port

7

Port 4 of Expander, when

 

Expander is connected to Printer port

8

Bosch Security Systems 29 August 2003

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Bosch Appliances 8555 manual General, Keyboard Connection Type Keyboard Number

8555 specifications

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