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12
en | Installation
LTC 8555/02, LTC 8555/03
RS-232 type Keyboards
User-supplied RS-232 grade cable
Dial-up modem, Hayes compatible
Fiber optic link, compatible with standard RS-232 protocol
Other RS-232 compatible data link
Notes:
1.
2.
3.
4.
5.2
LTC 8555/00 and LTC 8555/01 (standard keyboard) Installation
There are several options available for connecting these keyboard models to an Allegiant
system. The keyboard is supplied with a 3 m (10 ft) cable for local hookups, as shown in
FIGURE 1. Using the optional LTC 8558/00 cable, a keyboard can be remoted up to 30 m (100
ft) per Figure 2. In both of these cases, the keyboard cable can be connected directly to the
RJ-11 keyboard port located on the rear panel of the Allegiant system where it will be
provided with both data and power.
For connections beyond 30 m (100 ft), the LTC 8557 Series Remote Hookup Kit can be used,
as shown in Figure 3. The LTC 8557 is also required when the keyboard is remoted over a long
distance communication link, such as a fiber optic system shown in Figure 4.
Allegiant system main
Figure 5.1 Typical Configuration using supplied data/power cable
Allegiant
Keyboard Port
Figure 5.2 Typical Configuration using optional LTC 8558/00 cable
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.
F.01U.127.290 | 2.0 | 2009.03
Allegiant accessory, purchased separately.
LTC 8557 Series Remote Hookup kit required (purchased separately).
Requires RS-485 fiber optic link designed to support Allegiant keyboard protocol
operating at 9600 baud.
Requires full duplex RS-232 compatible fiber optic link operating at 9600 baud.
CPU bay
Allegiant system main
CPU bay
Instruction Manual
2
4
4
Allegiant Keyboard
Port
3 m (10 ft) data/power cable
(supplied with keyboard)
Optional LTC 8558/00 30 m (100 ft)
data/power cable
Allegiant Keyboards
Maximum Distance
1–30 m (1–100 ft), typical
Unlimited
5–10 km (3–6 miles), typical
Dependent on limits of link
Bosch Security Systems, Inc.
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