3M PELTOR ComTac 7 - Radio;Intercom Volume Control via SCU;RCU; Radio Volume on Radio Unit; OPERATION OF FUNCTIONS; NIB Functionality

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6.2. TO ADJUST THE RADIO/INTERCOM VOLUME
USING THE SCU-300 OR RCU-300
1. Short press both + and - buttons simultaneously.
~ 0.5 sec
2. Press either the + or – button to within 2 seconds to change
the volume level on connected devices. After
2 seconds the volume control will return to set the
environmental listening.
NOTE: When connected to an intercom system, this method
of changing the volume of connected radios/intercom systems
will not be available. In that case, it is necessary to enter the
menu and select Radio Volume to change the volume of those
devices.
6.3. TO ADJUST THE RADIO VOLUME ON THE
RADIO
Refer to technical documentation of the radio.
7. OPERATION OF FUNCTIONS
7.1. TO USE THE NIB FUNCTION
NIB offers electronic, headset-to-headset communication with
atransmissionrangeof≈10m/11ydfromthespeaker.There
is no limit regarding how many people within that transmission
range that can receive the transmission.
Upto4userswithin≈150m/165ydcantransmit
simultaneously using 1 of 4 open slots/channels. Once all
4 channels are active, no one else in the group can transmit
untilachannelbecomesavailable.Ifafthpersontriesto
transmit, a beeping sound will indicate that the message was
nottransmitted.This≈150m/165ydrangeisinanopeneld
(line in sight) and may be reduced by physical structures.
Note: Optimal signal for communication is reached within a
radiusof≈5m/5.5yd.NIBvolumewithinthe≈5m/5.5ydis
maximized.NIBvolumewilldecreaseinthe≈5-10m/5.5-11yd.
range as the listener gets further from the speaker.
1
10m
5m
2
1. Double tap on the NIB button to access the NIB menu.
x2
~ 0.5 sec
There are 3 different NIB modes.
• NIB VOX
• NIB PTT
• NIB OFF
Note: The NIB is constantly active in both NIB PTT and NIB
VOX modes. To silence all NIB activity completely, switch
headset to NIB OFF mode.
NIB VOX
NIB OFF
NIB PTT
7.1.1. NIB VOX
NIB VOX mode allows for hands free communications using
NIB when noise levels rise to approximately 80 dB Sound
Pressure Level (SPL). The NIB Control Button can be used
as a PTT for NIB communications in noise levels less than
80 dB SPL.
For environments with irregular noise levels the PTT button
can also be used to manually control the voice transmit.
Note: NIB is equipped with a busy channel signal (three
beeps), to notify the user that the headset did not transmit an
outgoing NIB transmission. In NIB VOX mode, loud sounds,
suchasweaponsre,orwindstrikingthecommunications
mic at high speed, can activate NIB transmission. If more
than four connected headsets are in NIB VOX mode and
operating in one of the conditions listed, the headset
misinterprets the loud sound to be that of a user attempting to
transmit. When this happens, the user will hear a repeating
busy channel signal in their headset. If this occurs, the user
can place the headset in NIB PTT or NIB OFF mode to
reduce the busy channel signal. Additionally, a user can turn
off warning signals in the headset menu.
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