14221-1800-2050, Rev. G
30
Figure 5-2: XL Extreme Speaker Microphone Controls
For more information on using the Fire Remote Speaker Microphone, refer to
Product Manual 14221-1800-6000.
Table 5-1 describes the default functions of buttons, knobs, and controls. Most
can be programmed for different functions; see Section 7.5 for more information.
Table 5-1: Radio Controls, Indicators, and Connectors
CONTROL/INDICATOR
FUNCTION
Group/Channel Knob
Selects groups/channels.
Power/Volume Knob
Turn clockwise to power on radio and increase volume of audio heard from speaker.
Minimum volume levels may be programmed into the radio to prevent missed calls
due to a low volume setting.
A/B (Ø/O) Switch
User-programmable switch (see Section 7.5.2).
Ambient Temperature
Sensor
Detects high temperature.
Microphone
(Secondary)
When noise cancellation is enabled, the secondary and primary microphones are
used together to form a dual microphone system. Noise cancellation improves the
quality of transmitted voice. When noise cancellation is disabled, only the primary
microphone is used. See Section 5.17 for detailed information on using noise
cancellation.
NOTE
NOTE
