Conversation Handling
By pressing the PTT button at the inner side of the handset, the transmitter is activated and ready to
speak. You can hear the radio transmissions in the earphone and via the loudspeaker. The loudspeaker
volumes (internal and external) can be adjusted using the potentiometers at the side of the rest.
While PTT is keyed or while the handset is taken the loudspeaker can be muted (jumpers 6 and 9).
Using jumper 5 a minimum volume can be defined. The volume cannot be lower as this value even if
the potentiometer is turned to very low values.
Adjusting the Microphone Level
The microphone level of the handset is adjusted correctly ex factory. If you still wish to change it, the
output level can be adjusted using the potentiometer near the microphone capsule at the outer side
of the handset.
The rest includes an AF amplifier that can be configured for different operation modes. It supplies the
int. and ext. loudspeaker with a maximum of 3 watt each.
The used signal is derived from the earphone AFand hence is independent from volume settings of
the radio. If necessary, the basic sensitivity can be adjusted with the poti inside the rest. Ex factory,
a level of 500 mV (poti R8) is set.
The integrated AF amplifier can be muted for the internal and the external loudspeaker. Muting is
active on PTT if jumper JP9 is set (factory setting). While the handset is taken, muting is active if
jumper JP1 is set (factory setting).
Pin Assignment Socket ST1
pin
function
1
AF input (transformer 200 or 600 ohm)
2
AF input (transformer 200 or 600 ohm)
3
PTT (semiconductor relay)
4
PTT (semiconductor relay)
5
GND
6
AF out
7
AF out
8
squelch or hook - (JP2+3)
9
squelch or kook + (JP2+3)
10
+ 12 volt operation voltage
socket ST1 is realized
as a terminal strip
inside the rest
Function Squelch or Hook
To pins 8 and 9 of ST1 a squelch signal of the radio can be applied (factory setting, JP2/JP3 closed
at the bottom). The squelch function is not used at Commander Zweitbesprechung O.
Alternatively these pins can be used to indicate the status of the hook via an opto-coupler (JP2/JP3
closed at the top).
Содержание Commander Zweitbesprechung O
Страница 1: ...Commander Zweitbesprechung O...
