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mbosv_eng (25.02.2014)
mbosv_eng (25.02.2014)
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Control and Display Elements
Keyboard
The keyboard holds the following functions for each of the four/eight channels:
Button
Function (standard)
(Funk-)kreis x
selection button
VOL+
increase volume
VOL-
decrease volume
L /
mute loudspeaker
S
special function (not assigned, only MBOS 4V)
I / RUF1
button for tone call 1
II / RUF2
button for tone call 2
/ Senden
PTT button
All buttons can be disabled separately. For Major BOS 1V, channel selection and loudspeaker
buttons are not necessary. The volume is adjusted by a potentiometer knob.
Carrier Display
For each of the four/eight circuits there is a separate carrier display (squelch) LED , that
is activated/deactivated using data telegrams.
PTT Display
For each of the eight circuits there is also a separate PTT display LED , that lights if the
transmitter for the respective circuit is keyed by pressing PTT, call 1 or call 2. (If a PTT
display flashes, another control set is transmitting on this radio circuit.)
Selection Display
The selection display LED lights, if the respective circuit was selected and is active. A
flashing selection display LED indicates that the Major is currently trying to establish the
connection via ethernet.
Loudspeaker / Volume Display (not for Major BOS 1V)
The volume display (separately for each channel) is an LED chain and indicates the current
volume. If the the loudspeaker is switched off, all LEDs of the chain are dark for Major
BOS 4V. The Major BOS 8V has a separate loudspeaker LED that displays the status of
the loudspeaker.
