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Bosch Security Systems | 29 March 2004
LTC 8557 Series | Instruction Manual | Installation
4INSTALLATI ON
ATTENTION: Installation should be
performed by qualified service personnel only
in accordance with the National Electrical
Code or applicable local codes.
The LTC 8557 Series kits consist of two identical
junction boxes, a power supply, a barrel plug cord,
and a 3 meter (10 ft) keyboard cable. Install the kit
as shown in the drawing below by performing the
following steps:
1. Each junction box may be surface-mounted
using the four screw holes provided in the base
flange of the case. The remote junction box
should be mounted within 3 meters (10 ft) of the
remote keyboard and the local junction box
should be mounted within 3 meters (10 ft) of the
main CPU bay.
2. Connect the 3 meter (10 ft) cable supplied with
the keyboard between the keyboard and the
remote junction box.
3. Up to 1.5 km (5000 ft) of customer supplied
0.5 mm
2
(24 AWG) shielded-twisted pair
(Belden 9841 or equivalent) may be run
between the two junction boxes. Connections to
the junction boxes are made to three of the four
screw terminals as follows:
Terminal Remote Keyboard Local CPU
Number Junction Box Junction Box
1SPARE SPARE
2+ -
3- +
4SHIELD SHIELD
NOTE: Data Reversal on pin-2 and pin-3 between
junction boxes.
4. Connect the 3 meter (10 ft) cable supplied with
the kit between the junction box and the main
CPU bay. Verify junction box power LED
indicator lights.
5. Connect the power supply to the junction box
at the remote keyboard site. If necessary, attach
either lead (the junction box and keyboard are
not polarity sensitive) of the barrel plug cord to
the positive terminal of the power supply.
Attach the other lead of the barrel plug cord to
the negative terminal of the power supply. Plug
the barrel plug into the junction box's barrel
jack. Plug the power supply into the appropriate
power source. Verify junction box LED
indicator lights and that the keyboard is active.
LTC 8557 series
junction box
1 2
3
4
5
6
7
8
9
0
Shot
Mon
Prod
Clr
BOSCH
BOSCH
Video Management System
POWER
INTUIKEY SERIES KEYBOARD
ALLEGIANT SERIES SWITCHER/CONTROLLER,
DIVAR DIGITAL VIDEO RECORDER, OR SYSTEM4
SERIES MULTIPLEXER
LTC 8557 series
junction box
Up to 1.5 km (5000 ft) of user
supplied 0.5mm
2
(24AWG)
shielded twisted pair
(Belden 9841 or equivalent)
Power Pack Supplied with LTC 8557
(Connect power cable direct to junction
box or to back of IntuiKey keyboard)
Cable supplied
with LTC 8557
Cable supplied
with keyboard
2
3
4
3
2
4
OR
Figure 1 Typical Remote Keyboard Configuration