TM9100 Service Manual General Information 121
© Tait Electronics Limited August 2005
4.9 Visual and Audible Indications
Visual and audible indicators give information about the state of the
radio. Visual indications are provided by the
STATUS LEDs, function-key
LEDs, and LCD display. The information conveyed by the
STATUS LEDs
is listed in Table 4.11. The behavior of the function-key LEDs depends
on the way the function keys are programmed. The LCD display
normally displays channel and user information, or error messages. For
more information on the LCD display during normal operation, refer to
the user’s guide. The error messages are listed in Table 6.1 on page 144.
Audible indications are provided in the form of different tones emitted
from the speaker. The information conveyed by the tones is given in
Table 4.12 on page 122.
Table 4.11 Visual indications provided by the STATUS LEDs
LED color LED name Indications Meanings
Red Transmit LED is on The radio is transmitting
LED flashes (1) The transmit timer is about to expire
(2) The radio has been stunned
Green Receive and
monitor
LED is on There is activity on the current channel, although it might
not be audible
LED flashes (1) The radio has received a call with valid special signaling
(2) The monitor has been activated
(3) The squelch override has been activated
Amber Scanning LED is on The radio is scanning a group of channels for activity
LED flashes The radio has detected activity on a certain channel and
scanning has halted on this channel
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