TM8100 Mobile Radio Calibration Application User’s Manual Glossary 21
August 2004 © Tait Electronics Limited
Glossary
B
bandwidth
The transmitter deviation and receiver audio sensitivity. Bandwidth is set on
a per-channel basis using the programming application. The field can be set
to 12.5 kHz (narrow band), 20 kHz (medium band), or 25 kHz (wide band).
birdie
A birdie is a hum or whistle on a channel caused by internal interference. A
birdie can be eliminated by activating a birdie killer on the channel.
C
calibration
Calibration is the process whereby a radio is manually or electronically
tuned for optimal performance. Calibration is normally only carried out
during product manufacture or major service.
D
DAC
Digital to analog converter. An electronic device that outputs a voltage
dependent upon the value of binary data input.
database
The set of programmable data points that allows the product to be
customised for a particular application or mode of operation.
FFSK
FFSK (fast frequency shift keying) is the default signalling method used
when transferring data (such as short data messages or GPS location
information) between two radios. Data is represented by 1 cycle of 1200 Hz
(logic 1) or 1.5 cycles of 1800 Hz (logic 0), and is transmitted at rates of 1200
bps.
P
programming
database
The programming database is the information that is altered using the radio
programming application.
S
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