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LTC 8900 Series
7.4
Signal Distribution Unit Hookup
The LTC 8900 Series CPU bay provides a single Biphase control code output which can be
connected to a LTC 8568 or LTC 8768 Signal Distribution unit. The Signal Distribution units
are used to provide Biphase control code outputs for communicating to remote receiver/
drivers, switcher-follower accessory units, the AutoDomefi Series of cameras, and Satellite
systems. Instructions for these accessories are included with the units.
7.5
Alarm Interface Unit Hookup
The LTC 8900 Series CPU bay provides a single external alarm interface port which can be
connected to a LTC 8540/00 Alarm Interface Unit or a LTC 8713/x0 Series Alarm Port
Expander. Each LTC 8540/00 Alarm Interface unit accepts up to 64 dry contact closures or
logic levels from remote sensing devices such as door contacts, PIRs, etc. The system can
accommodate up to 1024 alarm inputs using a combination of LTC 8540/00 and LTC 8713/x0
Series accessory units. Instructions for these accessories are included with the units.
7.6
External Computer Interface Connections
The LTC 8900 Series CPU s CONSOLE port provides a single RS-232 interface port which can
be connected to an external PC, an LTC 8712 Series Console Port Expander, or another
computing device. This external interface port can be used to externally program and control
the LTC 8900 system via a PC running the LTC 8059/00 Master Control Software, LTC
8850/00 Graphical User Interface software package, or a custom program generating
Command Console Language (CCL) commands. Refer to the Allegiant Console Command
Language manual for more information.
In redundant system configurations, commands and data received by the CONSOLE port are
directed to the active CPU inside the LTC 8901 Series CPU bay. The system s mirroring feature
automatically updates the nonactive CPU to reflect the same state.
NOTE: The CONSOLE port does not provide a standardized pinout connection. An interface
cable is available by ordering part number LTC 8506/00. CPU port pinouts and cable pinout
information can be found at the end of this manual.
The system s RS-232 communication protocols can be changed using the Allegiant PC-based
configuration software package or via a system keyboard, but the factory default values are as
follows:
Baud rate
Stop bits
Data bits
Parity
Hardware handshaking
(RTS/CTS)
The system can accommodate a total of 4 external devices using the LTC 8712 Series Console
Port Expander accessory units. Instructions for these accessories are included with the port
expander units.
7.7
Logging Printer Option Installation
NOTE: Although the installation procedure for each printer varies, the following steps are
generally required. Save the printer reference manual for procedures not covered.
Bosch Security Systems, Inc.
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