3M Peltor LiteCom Bedienungsanleitung Seite 5

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3:2 Switching the headset on and off
Press and hold the On/Off/Mode button (A:9) for two seconds to switch the headset on or off. A voice message will confirm
that the unit has been switched on or off. The last setting is always saved when the headset is switched off.
Note! Power is switched off automatically if the product has been inactive for two hours. Automatic power-off is indicated by
a voice message: "automatic power off" followed by a series of short tones for 10 seconds, then the unit is switched off.
3:3 Scrolling through the menu
Press the On/Off/Mode button (A:9) briefly to browse through the menu. A voice message confirms each step.
3.4 Radio volume (sound level for communication radio)
Press the + button (A:10) or – button (A:11) to adjust the volume. Each change is confirmed by a voice message. You can
choose between five levels. To turn the volume off, press the – button (A:11) for two seconds. This is confirmed by the
message "radio volume off". Press the + button (A:10) to switch this function back on.
Note! No radio communication can be heard when the volume is switched off.
Note! When the volume is switched off the other menus will not be available.
3.5 Channel (radio frequency)
Press the + button (A:10) or – button (A:11) to select channel. Each change is confirmed by a voice message. You can
choose between eight channels. See table F Radio channel frequencies.
3.6 VOX (voice-operated transmission)
VOX enables LiteCom to transmit automatically when sound above a certain level reaches the microphone. This allows
radio transmission without pressing the PTT button (A:14).
Press the + button (A:10) or – button (A:11) to adjust the sensitivity of voice-operated transmission. Each change is
confirmed by a voice message. You can choose between five levels or switch this function off. When the level is low it is
easier to transmit. To switch this function off, press the – button (A:11) for two seconds. This is confirmed by the message
"VOX off". The PTT button (A:14) must now be used to transmit. Press the + button (A:10) to switch this function back on.
Alternatively switch voice-operated transmission on or off by briefly press the PTT button twice. A voice message confirms
the current VOX setting.
The radio has a BCLO (Busy Channel Lock Out) function that prevents VOX operation if the channel is being used for
other transmission. An audible tone indicates that the channel is already being used.
Note! To activate the VOX function the speech microphone (A:8) must be very close to your mouth, 1–3 mm (figure G). The
user's voice will be heard in the headset when the radio is transmitting.
3.7 Squelch (hiss reduction)
"Squelch" means that background hiss in the earphones is prevented when the incoming signal is below the set squelch level.
Press the + button (A:10) or – button (A:11) to adjust the squelch level. Each change is confirmed by a voice message.
You can choose between five levels or switch this function off. A low squelch level may permit longer range. To switch this
function off, press the – button (A:11) for two seconds. This is confirmed by the message "squelch off". Press the + button
(A:10) to switch this function back on.
3.8 Sub channel (selective squelch )
When sub channel is active, an inaudible tone will be transmitted with the speech, and this tone is used to "open" the receiver.
This allows multiple groups of users to use the same channel without hearing other groups. This product supports CTCSS
(Continuous Tone Coded Squelch System), which means there are 38 tones that have been assigned the numbers 1–38
(table H, CTCSS). All communication on the channel can be heard if this function is switched off.
Note! When the sub channel function is switched on, all other incoming radio communication will be blocked.
Press the + button (A:10) or – button (A:11) to select the sub channel. Each change is confirmed by a voice message.
You can choose between 38 tones or switch this function off. To switch this function off press the – (A:11) button when sub
channel 1 is selected, or press the + (A:10) button when channel 38 is selected. This is confirmed by the message "sub
channel off". Press the + button (A:10) to switch this function back on.
3.9 PTT (Push-to-talk)
Press and hold the PTT button (A:14) to transmit manually using the radio. PTT transmission works at any time, regardless
of BCLO (Busy Channel Lock Out, see 3.6 VOX).
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