CTI Products MCN RCD System Overview - Manual (Page 10)

MCN System Manual Comparator I/O Modules
CTI Products, Inc.
68-10833-120
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2. Comparator I/O Modules
Comparator I/O Modules provide the physical connection between the comparator
and the MCN network. Depending on the features provided by the comparator,
the connection to the comparator may be discrete I/O points that are hard wired to
the comparator, or an RS-232 cable connected to a communications port on the
comparator.
The following are CTI Products’ MCN Comparator I/O Modules:
• ASTRO-TAC™ Comparator Interface Module (AIB)
• Comparator Interface Module (CIB)
Each module is briefly described below. General information about the operation
of each of these modules is provided in this manual. For more information about
features specific to an individual module, refer to its hardware reference manual.
2.1 ASTRO-TAC™ Comparator Interface Module (AIB)
The AIB connects Motorola’s ASTRO-TAC™ (VSELP signaling) or ASTRO-
TAC™ 3000 (APCO Project 25 IMBE signaling) Comparator to the MCN
network. This module is available exclusively through Motorola, Inc. Features of
the AIB module include:
• Serial communication cable connects the AIB to the ASTRO-TAC™
Comparator.
• Support for up to 13 receivers per AIB when operating with an
ASTRO-TAC™ Comparator
• Support for up to 64 receivers per AIB when operating with an
ASTRO-TAC™ 3000 Comparator
• Provides VOTE, RECEIVE, DISABLE, and FAIL status for each
receiver to an MCN User Interface Module.
• Allows a User Interface Module to FORCE VOTE or DISABLE any
receiver.
Refer to the AIB hardware reference manual for a description of the option
switches and cable pinout.
NOTE: The HIB User Interface Module only supports 8 receivers of an ASTRO-
TAC™ or ASTRO-TAC™ 3000 Comparator.