jotron TA-7650C, Руководство по обслуживанию и ремонту

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85894_M&R_TA7650C_A 2
EC Declaration of Conformity available at: www.jotron.com
Abbreviations and definitions
ALARM
Message by which the unit signals the occurrence of an event. The alarm is indicated by an audible tone and/or a
message (or icon) on the display.
APM
Audio and PTT Modem. The APM is designed for use in applications, which requires long distance control of
radios through a 4 or 2 wire leased lines. The modems use in-band signaling for transfer of PTT and Squelch,
and FSK data for transfer of alarms and Main/Standby selection.
ARC
With Audio Remote Control it is possible to extend the audio and PTT signals for a transmitter/receiver
combination consisting of one main and one standby transceiver.
One or two line pair is used for each transceiver and contains both PTT and audio in both directions.
BAUD
Transmission rate unit of measurement for binary coded data (bit per second).
BIT
Short form of Binary Digit. The smallest element of data in a binary-coded value.
BITE
Built In Test Equipment
bps
Bits Per Second.
DRC
Data Remote Control. With the DRC unit functions like frequency settings, BITE etc. are extended to a remote
panel. The DRC unit requires 1 separate line pair that is connected to the serial interface of the radio. Several
DRC units may share the same line. All functions in the transmitter can be controlled from the DRC.
DSP
Digital Signal Processor
FbA, FbB, FbC
Functional buttons to maneuver in the menus, located at the front of the equipment.
FSK
Frequency Shift Keying
ICAO
International Civil Aviation Organization
IEC
International Electro-technical Commission.
INTERFACE
Electronic circuits that permit the passage of data between different types of devices.
ITU
International Telecommunication Union.