3M Peltor ComTac VII MT14H41A-300NA, User Manual

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8.6.1. 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 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 fire, 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.
8.6.2. NIB PTT
1. Press and hold the NIB button when speaking into
the microphone.
2. Release the NIB button when the message is complete.
NOTE: Make sure that the NIB button is not pressed when
you are not speaking into the microphone.
8.6.3. NIB OFF
The NIB function is off.
8.7. DUAL PROTECTION AND EARPLUG MODE
The Tactical Modular Audio System (TMAS) is designed to
allow dual hearing protection for high noise exposures. The
TEP-300 or a non-electronic (passive) hearing protector can
be worn under the ComTac™ VII to achieve dual hearing
protection. When a non-electronic (passive) hearing
protection device is used, it may be necessary to place the
ComTac™ VII in Earplug Mode to maintain environmental
auditory awareness and communications.
NOTE: The user must achieve an adequate hearing protector
fit for both in-ear and over-ear hearing protectors to receive
dual protection.
8.7.1. DUAL PROTECTION WITH TEP-300
1. Insert and power-on the TEP-300. Refer to TEP-300 User
Instructions.
2. Place the ComTac™ VII over the ears and power-on. Refer
to section “8.3. To power On/Off the headset”.
3. Start the SCU-300. Refer to SCU-300 and TMAS User
Instructions.
4. The headset and SCU will automatically detect the TEP-300.
8.7.2. DUAL PROTECTION WITH PASSIVE HEARING
PROTECTOR AND EARPLUG MODE
Earplug Mode is useful when dual hearing protection is
required, and the user prefers a passive hearing protection
device, such as the 3M™ E-A-R™ Classic™ earplug.
WARNING! DO NOT use the headset in Earplug Mode
without properly fitted earplugs under the earcups, as the
increase in audio volume may reach an unsafe level. Failure
to wear properly fitted earplugs while operating in Earplug
Mode may result in hearing loss or injury.
1. Properly fit the passive hearing protector.
2. Place the ComTac™ VII over the ears.
If the headset is powered off:
3. Press and hold the + button until an audio message says
“Power on”.
4. Keep pressing the + button until an audio message
confirms “Earplug Mode”.
5. Turn off ComTac™ VII to turn off the Earplug Mode.
If the headset is powered on:
3. Press and hold the + button until an audio message says
“Power off”.
4. Keep pressing the + button until an audio message
confirms “Earplug Mode”.
5. Turn off ComTac™ VII to turn off the Earplug Mode.
~ 7 sec
Note: The headset will first indicate that product is off. Keep
pressing the + button until an audio message indicates
Earplug Mode.
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