3M Peltor MT7H7A4610-NA 사용자 설명서 - 페이지 8

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3.9.2 Sub channel (selective squelch)

When sub channel is active, an inaudible code will be transmitted with speech, and this code is used to "open" the receiver. This

allows multiple groups of users to use the same channel without hearing other groups. This product supports Continuous Tone

Coded Squelch System (CTCSS), (table H), and Digital Coded System (DCS), (table I), which means there are 121 codes

which have been assigned the numbers 1–121. All communication on a channel can be heard if this function is switched off.

Press the + button (A:11) or the – button (A:12) to select the sub channel. Each change is confirmed by a voice message. You

can choose between 121 tones or switch this function off. To switch this function off, press – (A:12) when sub channel 1 is

selected or press the + (A:11) button when channel 121 is selected. This is confirmed by the message "sub channel off". Press

the + button (A:11) to switch this function back on. Note! When the sub channel function is switched on, all other incoming radio

communication will be blocked. Note! BCLO (Busy Channel Lock Out) prevents transmission on a busy channel (see 3.8 VOX).

3.9.3 Power (radio transmitted output)

There are two output power levels, high and low. Use as low output as possible to maximize the run time. Press the + button (A:11)

or – button (A:12) to set the level. Each change is confirmed by a voice message.

3.10 Set up menu (configuration menu)

The configuration menu gives access to more advanced settings for the headset. This menu is accessed in power off mode by

pressing the PTT auxiliary button (A:16) and the On/Off/Mode button (A:10) at the same time. To exit the set up menu press and

hold the On/Off/Mode button (A:10) for 2 seconds and the headset will be turned off.

3.10.1 Busy channel lockout (BCLO)

This menu setting lets you change the way the headset reacts when you try to transmit on a busy channel. There are two

options to choose from: "carrier" and "sub channel" (code) with or without a warning tone. If you want the headset to respond to

the carrier wave, select the "carrier" option; if you want it to react to the sub channel, choose the "sub channel" option. Press the

+ button (A:11) or – button (A:12) to select the BCLO setting. Each change is confirmed by a voice message.

3.10.2 Max transmission time

This function lets you adjust the maximum transmission time. The time can be chosen between 30 seconds, up to 5 minutes

and off-mode. Press the + button (A:11) or – button (A:12) to adjust the maximum transmission time. Each change is confirmed

by a voice message.

3.10.3 Automatic power off

The headset is switched off automatically when there is no activity (no button is pressed or no VOX transmission) for a set time.

This time can be adjusted here (maximum time is 8 hours) or this function can be disabled. Press the + button (A:11) or – button

(A:12) to adjust the automatic power off time. Each change is confirmed by a voice message.

3.10.4 External mode

The external mode can be configured for different types of equipment that are connected to the headset. You can switch

between external PTT mode, input source mode (e.g. FM/AM radio), phone mode (e.g. mobile phone, DECT phone), radio

mode (external communication radio). Each has different functions. Press the + button (A:11) or – button (A:12) to select the

function. Each change is confirmed by a voice message. Warning! The output of the electrical audio circuit on this hearing

protector may exceed the daily threshold for sound level.

3.10.5 Microphone input (microphone type)

LiteCom Plus is supplied with a dynamic microphone (MT7) as standard. However, you can use electret microphone (MT53)

instead. The microphone setting can be changed here. It is also possible to switch off the microphone and just use the headset

for listening.

Press the + button (A:11) or – button (A:12) to select the required microphone. Each change is confirmed by a voice message.

3.10.6 Microphone mute (to the external output)

When you use PTT transmission with the built in communication radio this prevents sound from the speech microphone from

being sent to the external output. This menu setting lets you switch this function on or off. Press the + button (A:11) or – button

(A:12) to switch this function on or off. Each change is confirmed by a voice message.

3.10.7 External jack level control

This function permits automatic level control for the incoming signal from external equipment. Press the + button (A:11) or – but-

ton (A:12) to switch this function on or off. Each change is confirmed by a voice message.