Definitions and acronyms – GAI-Tronics 13363 Addressable Amplified Speakers Installation and Operation Manual User Manual
Page 55
Pub. 43004-034F
Model 13353, 13363, and 13373 Addressable Amplified Speakers
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03/15
Figure 21. 190-002PS Wiring Details
Definitions and Acronyms
Term Definition
CSQ
Carrier squelch
TPL
Tone Private Line - A means of grouping users of a common radio channel. Sub-
audible tones are transmitted with audio; a particular radio's speaker (or the speakers of a
group of radios) will unmute to broadcast a transmission only if the associated sub-
audible tone identifies it as belonging to the radio’s user group.
DPL
Digital Private Line - A system analogous to TPL but using low speed digital signaling
instead of sub-audible tones.
dBm
A measurement of signal power in decibels referenced to 1 mW.
Ah
Ampere-hour is the unit quantity of electricity carried past any circuit point in one hour
by a steady current of one ampere.