Abell A720T, Руководство по обслуживанию

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A720T (VHF) Service Manual V1.0
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Chapter 2 Structure and key functions
2.1 Structure
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1
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3
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4 Programmable function key :
These keys are programmable function keys; Long press (key-press
time should reach the time we set for long press key) and short press (normal key), which can be set for different
functions. Press it to enable programmable auxiliary functions.
Your dealers can can program key 1, 3 and 4 to add hotkeys and preset channel/group:
Short press: quick press and then release
Long press: Keep pressing for several seconds(preset time between 0.25s to 3.75s )
No function: If you preset this key as no function, it will warn you when pressing it.
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2 PTT key :
Press this switch, and then call the opposite by microphone. Release the switch to listen.
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5 Antenna
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6 Knob: Channel switch
Rotate it from channel 1 to channel 32. (note: there are totally 32 channels in two areas of A720T)
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7 Knob: Power on/off and Volume control
Clockwise rotate it to turn on the two way radio power, you will hear a sound of "click", then continuously rotate it to