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LTC 4600 Series | Instruction Manual | Installation
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
Typical Configuration:
Typical Allegiant Main CPU Bay or Allegiant Keybord Port Expander
ALLEGIANT Video System
LTC 4671/00
RS485
Rack-mount Model
TRANSCEIVER
(in LTC 4637 Card Cage)
REC
XTMR
1- Data "+"
PWR
BOSCH
LTC 4771
Front
Side View
View
Figure 8 LTC 4671 Series Stand-alone Transceiver and LTC 4671 Rack-mount Transceiver
Bosch Security Systems | September 20, 2004
CODE OUT ALARM STATUS BATTERY LOW POWER
To Allegiant Keyboard Port
Using Keyboard Data Cable
4
4
LTC 8557
LTC 8557
3
3
2
2
Junction Box
Junction Box
1
1
2- Data "-"
Refer to Text
Regarding Supplied
120Ω Resistor
POWER
IN from
RACK
of Rear
Up to 4 km (2.5 mi) using
62.5/125 micron
Multimode Fiber Optic Cable
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.
`
BOSCH
Separate Video
Transmission Link
LTC 4671
RS485
DATA
REC
BOSCH
DATA
XTMR
POWER
- 4
4
- 3
LTC 8557
3
-- Data - 2
2
Junction Box
1
+ Data - 1
AC
POWER
POWER
SUPPLY
- 2
POWER
+12VDC - 1
POWER
SUPPLY
AC
POWER
EN | 14
MONITOR
BOSCH
Keyboard
Data Cable
BOSCH
Pro
Mo
d
n
Cl
Sh
r
ot
1
2
3
4
5
6
7
8
9
0
IntuiKey Series
Keyboard
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