Clear-Com Tempest900 - Manual (Page 85)

79 Tempest®900 2-Channel Wireless Intercom System
Glossary
2-Wire or TW: A type of intercom system characterized by audio signals transmitted and received on the same pair of wires
at the same time. The connector usually associated with 2-Wire or TW is a 3-pin XLR.
4-Wire: A type of intercom system characterized by audio signals transmitted on one pair of wires and received on a
different pair of wires.
Accu-Sync: Tempest Wireless technology that synchronizes transmission timing for up to 10 BaseStations to prevent
interference.
Auto-Null: A process that automatically optimizes the BaseStation 2-Wire, intercom interface hybrid to match the line
characteristics of the external 2-Wire system.
AUX IN: Inputs program or other audio sources into the Tempest BaseStation to one or more intercom channels. The
Auxiliary IN connector is a ¼” Tip/Ring/Sleeve jack that accepts a standard ¼” TRS plug.
AUX OUT: Outputs intercom audio from one or more intercom channels to an external system. The Auxiliary OUT connector
is a ¼” Tip/Ring/Sleeve jack that accepts a standard ¼” TRS plug.
Banner: The top line of the BaseStation display, with white-on-black lettering. Usually the banner is the title of a menu
screen.
Call Alert: A feature of intercom belt packs intended to visually and/or audibly alert users to a communication transmission.
Channel: A duplex communication path to transmit and receive voice communication.
Desensing or receiver desensitization: Desensing occurs when a transmitter is operating in close, physical proximity to a
receiver, even if that transmitter is not on or near the receiver’s operating frequency.
Receiver desensitization occurs because receivers must maintain critical voltage and current levels throughout the front-
end stages and a strong (i.e. physically close) transmitter can cause these levels to vary greatly. As these levels widely
fluctuate, the receiver performance will be greatly degraded. Increasing the physical distance between transmitter and
receiver will decrease desensing. The greater the frequency separation between the two, the less the receiver performance
will be affected.
Dual Listen: This BeltStation feature permits an operator to simultaneously listen to two channels.
Frequency Hopping, Spread Spectrum (FHSS): Radio technology that utilizes many frequencies in quick succession,
intended to minimize the probability of radio frequency interference.