4 BASIC OPERATIONS
4.1. TURNING THE RADIO ON AND OFF
On the SDM630, the On/Off power switch is part of the rotary volume control knob,
located on the top left hand side of the radio control head.
To turn the radio on, press and hold the volume knob until a beep is heard. The radio
will turn on after about 1 second.
The display will illuminate and show a “Welcome Message” text as programmed by the
FPP.
After about five seconds, the display will revert to the Default Screen, at which time
the radio is ready for use.
To turn the radio off, press and hold the volume control knob until a low beep sounds
then release the knob.
If the radio Power Down Timer is enabled, the mobile will automatically turn off after
several hours of inactivity (i.e. no keys pressed).
Prior to automatically switching off, the radio will emit warning beeps for 10 seconds.
Pressing any key will reset this timer.
4.2. ADJUSTING THE VOLUME
After turning the radio on, rotate the volume control knob clockwise to increase the
volume or counter-clockwise to decrease the volume.
Note: The radio may be programmed so that the volume cannot be turned off
completely.
4.3. SELECTING A ZONE
Zones are groups of channels that are intended to be used in a particular geographical
or functional zone (e.g. North, South, Security, Fire Control). The radio supports up to
40 zones, each with a maximum of 250 channels. A radio must have at least one zone
defined to be functional and a channel may be used in more than one zone.
A Zone can be selected as follows:
1. Through menu selection:
a. Go to the ‘Zone’ menu, use the ▲ and ▼ keys to choose the required
zone and press the ‘S’ key to select it.
2. By using the function keys:
Doc Number: TNM--U-E-0108 ISSUE 1.5 Page 30
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