FunkTronic Major BOS 1a, Руководство пользователя

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mbos1a (06.09.2012)
Kompetent für Elektroniksysteme
mbos1a(06.09.2012)
- 5 -
Kompetent für Elektroniksysteme
Major BOS 1a - General Remarks
The Major BOS 1a is a µC-based control set for radios allowing the adjustment of different levels and
parameters. The radio is connected to the squelch input, the PTT output and the AF in/output. For
operation 12 V DC supply is necessary.
As the AF output is only open during transmission, several Major BOS 1a can be connected in parallel.
The PTT output can also be used as an input for muting in order to avoid feedback between control
sets placed adjacently to each other.
Talking to the Radio
There are three different ways to talk to a connected radio:
1. by pressing the red PTT button and using the gooseneck or a headset microphone for
voice transmission
2. by using the handpiece and its PTT button
3. by using an external PTT button (e.g. foot switch) for talking via headset or gooseneck
microphone
In all cases the PTT display LED is activated.
Volume Settings
The volume of the loudspeaker (also for ext. loudspeaker) is set via the volume control knob.
The volume of the handpiece as well as the level of its microphone can be adjusted at the handpiece.
The potentiometers are situated near the respective capsules.
The microphone levels for the headset and the gooseneck microphone can be set internally.
Muting of the Loudspeaker
The loudspeaker is always muted automatically during transmission. When the handpiece is taken,
the loudspeaker is muted if jumper JMP3b (4-6) is pulled out.
The loudspeaker can also be muted by an external PTT output in order to avoid feedback between
control sets placed adjacently to each other.
The polarity is set by JMP2b (4-6) and has to be the same as for the PTT output JMP2a (1-3). If no
muting is desired, JMP2b must be removed.
Tone Call Encoder
The Major BOS 1a has two single tone encoders, Call 1 (1750 Hz) and Call 2 (2135 Hz). The calls
are sent using the respective buttons of the control panel. The tone call is sent as long as the button
is pressed.