Datasheet

Switching and Control | Switching and Control Systems | 467
LTC 8555 Series Keyboards
The LTC 8555 Series are compact, full function keyboards
for use with Allegiant Series matrix switchers. LED
readouts display real time system status information.
Includes variable speed joystick and zoom lens controls
for operating fixed or variable speed pan/tilt/zoom
equipped cameras. The keyboards are available in the
following configurations:
Model Number Top Bezel Graphics Communication Protocol
LTC 8555/00 English RS-485
LTC 8555/01 Icons RS-485
LTC 8555/02 English RS-232
LTC 8555/03 Icons RS-232
Electrical
Operating Voltage 12 VAC (supplied by main Allegiant CPU bay or
optional Keyboard Extension Kit)
Signal 2 wire RS-485, 9600 baud (LTC 8555/00 and
LTC 8555/01 models) 3 wire RS-232,
9600 baud (LTC 8555/02 and LTC 8555/03
models)
Connectors One (1), 6-contact connector for data/power
Mechanical
Construction/
Finish
High impact plastic case with charcoal color
Dimensions
(W x D x H)
220 x 51 x 155 mm (8.67 x 2.00 x 6.11 in.)
Weight 0.55 kg (1.22 lb)
LTC 8558/00 Keyboard Extension Cable
Six-conductor extension cable carries data/power for
remote IntuiKey Series or LTC 8555 Series keyboards up
to 30 m (100 ft) away from main Allegiant CPU bay.
LTC 8557 Series Keyboard Extension Kits
Interface kit used to remote IntuiKey Series or LTC 8555
Series keyboards up to 1.5 km (5000 ft) away from main
CPU bay. Customer supplied 0.5 mm
2
(24 AWG) shielded-
twisted pair (Belden 9841 or equivalent) required
between main CPU bay site and keyboard site. Kit
provides two junction boxes, interface cable, and
appropriate keyboard power supply.
Electrical
Model No.
Rated Voltage
1
Voltage Range Power
LTC 8557/60 120 VAC,
50/60 Hz
108 to 132 10 W
LTC 8557/50 230 VAC,
50/60 Hz
198 to 264 15 W
1. Input voltage of included power supply.
Indicators Junction box mounted power LED
Connectors One (1), 4-position screw terminal block. One (1),
6-contact keyboard cable connector.
Mechanical
Construction/
Finish
Surface mountable, flat black painted metal enclo-
sure
Dimensions
(W x D x H)
121 x 70 x 35 mm (4.75 x 2.75 x 1.375 in.)
Weight 170 g (6 oz.)
LTC 8568/00 Signal Distribution Unit
Main site Bi-Phase control code distribution and line
driver unit for communicating to AutoDome Series
cameras, receiver/drivers, switcher/ followers, and
Allegiant satellite systems. The unit provides 32 separate
outputs for driving up to 256 remote devices. Either “star”
or “daisy chain” wiring configurations may be used.
Two meter (6 ft) interface cable for data/power between
unit and main Allegiant CPU bay supplied. Not applicable
to the LTC 8100, LTC 8200, and the LTC 8300 Series
systems.
Electrical
Operating Voltage 12 VAC (supplied by main CPU bay)
Power 3 W
Indicators
•
Power
LED
•
Code
LED
Connectors
Input One (1), 9-pin Sub D connector for data/power
Outputs Sixteen, 6-contact removable screw terminal blocks
for code output. Maximum transmission distance is
1.5 km (5000 ft) using 1 mm
2
(18 AWG) shielded-
twisted pair (Belden 8760 or equivalent).
Mechanical
Construction/
Finish
Charcoal colored metal enclosure
Dimensions
(W x D x H)
445 x 318 x 89 mm (17.5 x 12.5 x 3.5 in.)
Integral mounting flanges for EIA 48 cm (19 in.)
rack
Weight 1.8 kg (4 lb)
LTC 8768/00 Signal Distribution Unit
Same features and specifications as the LTC 8568/00
except that it contains twice the number of output
connectors which provide 64 separate outputs for driving
up to 512 remote devices. Not applicable to the
LTC 8100, LTC 8200, and the LTC 8300 Series systems.
LTC 8540/00 Alarm Interface Unit
Unit accepts up to 64 contact closures or logic level
inputs from remote sensing devices such as door
contacts, PIRs, etc. and then reports the “alarm”
information to the main Allegiant CPU bay. Alarm inputs
may be configured in groups of 32 to accept either
normally open or normally closed contacts. Unit also
contains eight relay outputs that activate automatically
upon alarm conditions. A two meter (6 ft) interface cable
for data/power between unit and main CPU bay is
supplied. Not applicable to the LTC 8100, LTC 8200, and
the LTC 8300 Series systems.
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