CTI Products TSAM Transmitter Steering & Audio Matrix - Manual (Page 9)

TSAM Installation and Maintenance Rev. 2.10 Chapter 1
CTI Products, Inc. System Description
1
1. System Description
Transmitter steering radio systems consist of multiple strategically located transmitters and receivers.
When a mobile or portable calls the dispatcher, the system comparator selects the receiver with the best
signal. The CTI Transmitter Steering Audio Matrix (TSAM) monitors this information to determine the
best site for the next transmission. After selecting the proper transmitter site, the TSAM routes the
transmit audio to the selected transmitter and provides a steered transmitter indication for display on the
radio control console.
Figure 1 Typical System Diagram
The TSAM is a microprocessor-controlled unit that is field programmable and incorporates electronic
audio switching for high reliability. The TSAM generates all necessary transmitter keying and control
tones.
1.1 TSAM Features
The TSAM provides the following functions:
• Routes audio between up to eight transmitters and eight receivers, with
expansion capabilities allowing up to eight TSAM units to be
interconnected. For a maximum capacity of 64 transmitters.
• Provides several (selectable) steering decision algorithms.
• Generates Positive Mode Control (PMC) keying tones.