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1.0 PrEPArAtIon/AssEMBLY
InterphoneF3Xt is a modular audio kit made up of a Blue-
tooth® module (the core of the system) (A), a double slide
support system for the module (E/D) and an audio kit with
a double microphone to be installed inside the helmet (C/B)
Before configuring the InterphoneF3Xt, you should check
the website for software updates that could improve the
performance of the F3Xt. If there are any updates, installa-
tion is recommended.
Verify compatibility with the operating system on your PC,
then download the file and the attached instructions that
will guide you through the update process.
1.1 Mounting the bracket on the helmet
The InterphoneF3XT has two mounting systems (small
plates) (E/D) that you can install on the helmet . Choose the
system that is better suited to the type of helmet you are
using .
Equipped with a sliding latch system, the plates support and
lock the F3XT Bluetooth® module into position . One system
is applied using an adhesive system (E), and the other uses
a clip (D) .
Thanks to the sliding latch system on the plates, the F3XT
module can easily be removed for recharging, updating,
security against theft, and use on other helmets that have
already been prepared with other kits designed for each
type of helmet .
The kits for an additional helmet all consist of an audio sec-
tion with earphones/microphone, along with two support
plates for the module .
The kits for an additional helmet are optional and can
have a different structure and operation . For more in-
formation, consult the accessory section on our website,
www .interphone .cellularline .com
we recommend using the adhesive plate (E) since it is
more aerodynamic and can be placed wherever you like on
the surface of the helmet . This allows you to choose point
that best suits the shape of the helmet shell to maximize ap-
pearance and adhesion .
On the other hand, the adhesive plate cannot be reposi-
tioned . Once it is applied, it cannot be removed because the
3M adhesive that provides its excellent holding power does
not allow for a change of position . If the plate is removed, it
must be replaced with a new one .
Carefully choose the most suitable point before application .
the clip-on plate (D) is better for those who do not want
to apply permanent adhesive to their helmet or would like
to be able to remove the plate and use the helmet with no
accessories installed .
The clip-on plate requires that the helmet allow part of the
plate to be inserted between helmet shell and cheekpad .
The cheekpads on some helmets are glued or have special
seals that prevent the plate from being inserted correctly or
require the helmet to be modified, which not everyone is
willing to do . In these cases, it’s better to choose the adhe-
sive plate .
Both brackets can only be installed on the left side of the
helmet .
Installation with (adhesive) plate
Take the adhesive plate, but do not remove the protective
film on the back . Place the plate on the left side of the hel-
met shell . Now, move it around and find the position where
it will adhere and function best . Before applying it, mount
the F3XT module on the plate and check whether the posi-
tion you chose could disturb the driver by causing interfer-
ence or discomfort (check visor, opening, etc . . .) .
Carefully clean and degrease the point chosen for apply-
ing the plate . Do not use strong detergents that could ruin
the paint on the helmet . After cleaning the helmet shell,
remove the protective film from the double-sided adhesive
strip and apply the plate on the helmet . Press quickly on the
plate to attach the strip firmly .
After application, it is a good idea to let the 3M adhesive act
on the helmet for 12 hours before using the helmet .
Installation with the clip-on (removable) plate
Check the type of helmet you have and make sure that the
clip can be inserted between helmet shell and cheekpad .
Otherwise, use the adhesive plate .
Take the clip-on plate, loosen the two screws and remove
the rear section .
On the left side of the helmet, locate the most suitable point
for inserting the clip, slide the rear section of the clip in be-
tween the helmet shell and the cheekpad, and let the end
(with the holes for the screws) protrude on the outside . Now,
try to join the front section of the clip onto the rear section .
Depending on the thickness/radius of the helmet, it may be
necessary to use the adapter (J) to compensate for the dis-
tance between the two sections so that the clip still adheres
to the helmet shell when the screws are tightened .
Tighten the screws with the screwdriver provided . Do not
use excessive force when tightening the screws . You could
break all or part of the clip .
If you are also using the adapter for the clip, you must re-
place the two screws installed in the clip with the longer
ones supplied with the unit .
1.2 Audio section (microphone/earphones) (C/B)
InterphoneF3XT with audio kit with two microphones,
connected to the earphone with a mini jack to be able
to choose the most suitable based on the type of helmet .
This makes mounting easy and possible on open-face
and modular as well as full-face helmets .
Open-face/modular helmets use the kit with the micro-
phone mounted on a flexible metal arm (B), since the
arm must remain suspended in front of the user’s mouth .
Full-face helmets use the audio kit with the microphone
connected to the earphone by a thin wire (C) that can be
handled and hidden easily during installation . The micro-
phone is encapsulated in a strip of flexible rubber and is
applied on the inside of the chin strap with adhesive or
Velcro, in front of the user’s mouth .
The right earphone is connected to the audio section
with a moveable mini-jack . Use only the left earphone
in countries where the use of a double earphone is pro-
hibited .
Installing the audio section
Wear the helmet and locate the exact point where your
ears are positioned inside .
If the internal fabric of the helmet allows it, try to apply
the two earphones in the audio kit directly at the points
you determined . The Velcro on the back of the earphone
will often adhere perfectly to the material in the helmet
without the need to use the fabric strip (I) with double-
adhesive . Otherwise, if the material is unmanageable,
apply the strip of fabric at the point you previously deter-
mined and place the earphone on the strip .
Put on the helmet once again and check whether the ear-
phones are correctly positioned . They must be centred
and come slightly in contact with your ears .
If the helmet allows it, it’s a good idea to insert the ear-
phones under the cheekpad fabric, which requires more
time and care to accomplish but makes the internal kit
almost invisible and more comfortable .
Thread the cable with plug under the cheekpad and
around the helmet while trying not to lay it over itself or
twist it . Then, pull it out on the left side as far as it will
go . Afterwards, when the plug is connected to the F3XT
module mounted on the support, you can push the ex-
cess cable back inside and leave only as much as you
need on the outside .
Microphone on open-face/modular helmets (B) - if
possible, slide the microphone arm through the hole in
the chin strap and below the cheekpad so that the micro-
phone is more stable and less obtrusive . It should be pos-
sible to position the microphone with foam windscreen
(14) in front of your mouth, but it may be left slightly to
the side of the mouth .
After installation is complete, make sure that the wording
MIC on the foam windscreen on the microphone arm fac-
es your mouth and preferably points toward your eyes .
Microphone on full-face helmets (C) - the wire from the
microphone must exit from under the cheekpad, and the
microphone (14) must be installed on the inside of the
chin guard and in front of the mouth .
Make sure that the microphone as installed does not
block any ventilation holes, and check that the ventila-
tion holes are not pointing directly at the microphone .
The microphone can be installed directly using the built-
in double-sided tape (fixed mounting) .
1.3 recharging
The InterphoneF3XT must be charged before use .
Once mounted on the helmet, connect the recharger ca-
ble provided (F) to a USB port, then insert the recharger
cable plug into the outlet on the audio kit connector (16)
correctly inserted in the InterphoneF3XT module .
The charge LED turns orange (7) during charging.
When the battery is fully charged, the LED will turn green .
About two hours are needed to charge the F3XT mod-
ule completely . Two modules can be charged together in
around three hours .
We recommend turning the module off before recharg-
ing the F3XT .
1.4 turning on/off
tUrnInG on
Press and hold the MFB button for approximately 3 seconds .
The speaker will sound an acoustic warning and the LEDs will
begin flashing quickly for around 3 seconds .
Subsequently, in stand-by mode, the LED will flash approxi-
mately once every 5 seconds .
tUrnInG oFF
Press and hold the MFB button . The speaker will sound a pro-
longed acoustic warning and the LED will flash red prior to
turning off .
2 PAIrInG
2.1 telephone
Pairing
The IntErPHonE F3Xt can be paired to a mobile phone .
After having turned the IntErPHonE F3Xt off, press and
hold the MFB button until the warning light alternates red
and blue flashes. This will take about 8 seconds.
When the light is flashing red/blue alternately perform the
device search from your telephone (refer to the telephone or
navigator manual) .
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