Sensear SM1P User manual

SM1P/B
MANUAL
ENGLISH

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INTRODUCTION
The SM1P/B is a state of the art hearing protection (ie protects against
harmful noise) communication system that allows you to retain
situational awareness whilst remaining in full contact with your team via
Short Range technology, as well as two-way radio or cellular device via
Bluetooth®or wired connection.
There are Intrinsically Safe variants of the product (“IS” and “Ex”) that
meet international standards for use in explosive gas environments.
Please see ratings on page 37 and 38.
Situational awareness is provided by processing technology and
environmental microphones mounted within the headset.
Contact through two-way radios is enabled by the SRCK6XXXXX* cable
assembly available separately. Cable numbers vary depending on the
two-way radio model. Please consult with the website for more
information.
*SRCK6XXXXX part numbers vary depending on the radio connector.
Consult your supplier for the appropriate cable.
For language translated manuals and further information, please refer
to the website.

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MAINTENANCE AND SAFETY INSTRUCTIONS
The SM1P/B IS and Ex has been designed such that minimal user
maintenance is required. Only those parts listed on page 21 of this
instruction manual are user replaceable.
SPECIFIC CONDITIONS OF USE Potential Electrostatic hazard, clean
with damp cloth only.
WARNING The IS/Ex headset must not be disassembled. In the event of
a malfunction the unit should be switched off and returned to Sensear
Pty Ltd. The battery is not user replaceable; the IS/Ex headset must be
returned to Sensear for battery replacement. Substitution of
components may impair Intrinsic Safety.
WARNING Connection to the USB Connector located in the connector
compartment of the right-hand ear-cup is not permitted. The USB is for
service only.
WARNING The IS/Ex headset must not be charged in a hazardous
area. The battery shall only be charged when the equipment is located in
a safe area using the class II charging supply via the jack socket on the
left-hand ear cup; the maximum permitted voltage at this charging input
is Um = 6V.
WARNING Connection to the multi-pin hirose connector of the IS/Ex
headset (wired version) shall only be done via an SRCK6XXXXX IS/Ex
headset Intrinsically Safe interface cable. No direct connection to the
multi-pin hirose connector is permitted.

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HEADSET ANATOMY
FIGURE 1

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#
Description
1.1
Volume up button
1.2
Volume down button
1.3
Power button
1.4
Hatch cover, for programming and charging
1.5
Multi-function button (MFB)
1.6
Headband*
1.7
Ear cushions
1.8
Microphones
1.9
Headset cable
1.10
Headset connector
1.11
Boom microphone
Mount - M5 Hex screw
Connector - 2.5mm Audio jack
1.12
Inline PTT
1.13
Inline PTT button
1.14
Two-way radio connector (note, these will vary depending on your
two-way radio)
1.15
SRCK61XX cable assembly
1.16
To the two-way radio
1.17
LED light (one on each side of headset)

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WEARING THE HEADSET
FIGURE 2
#
Description
2.1
Headset
2.2
Boom microphone
2.3
Inline PTT
2.4
Two-way radio

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The SM1P B headset is designed to be worn with the headset sealing
around the ears. Specific examples of how to fit the headset around the
ears are covered in the next three pages. The fit does alter slightly
depending on what style of brace is used - headband, behind the neck or
mounted to a helmet directly.
The boom microphone should be placed approximately 5mm (1/4”) in
front of the mouth. Check to ensure the white dot or microphone label is
facing towards you. The orientation is essential as the microphone is
directional. If the microphone faces a different direction, this may lead to
a reduction in transmission quality.
The inline PTT has a rotatable clip behind it to allow it to attach to the
shirt / upper garment.
The inline PTT must be connected to the two-way radio using the multi-
pin connector.
FITTING THE HEADSET
It is recommended that the wearer should ensure that;
•The ear muffs are fitted, adjusted and maintained in accordance
with the manufacturer’s instructions
•The ear muffs are worn at all times in high noise conditions
If the above recommendations are not adhered to, the protection
afforded by the ear muffs will be severely impaired.

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Behind the neck mount fitting instructions
#
Description
3.1
Adjust velcro strap so that the ear muff cups completely enclose
the ears.
3.2
The ear muff cushions should seal firmly against the head.
3.3
For best results, remove all hair from under the ear cushion.
3.4
Noise reduction will be adversely affected by anything that breaks
the seal of the ear muff ear cushions.

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Headband mount fitting instructions
#
Description
4.1
Adjust the headband by pulling the centre band out equally on both
sides.
4.2
Ensure no hair is inside the muff ear cushions.
4.3
Fit the ear muffs over the ears ensuring a tight fit around the ears.
4.4
Ensure the muff completely surrounds the ears.
4.5
Press down on the headband to obtain a snug and comfortable fit.

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Helmet mount fitting instructions
#
Description
5.1
Attach the adaptors to each side of the helmet by sliding them into the slots.
5.2
Attach the earmuffs by sliding into the adaptors.
5.3
Ensure the earmuff is firmly attached by lifting the arm up and down.
5.4
Place the helmet on the head and adjust by sliding the ear muffs up and
down.
5.5
Earmuffs should seal firmly against the head. For best results, remove hair
from under the ear muffs.
5.6
Three adhesive mounts and ties are included to secure the ear muff cable to
the helmet. The mounts should be evenly spaced around the rear outside of
the helmet. Fit the tie through the mount. The cable should feed through
each tie and secured in place.

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Dual protection fitting instructions
Locate the ear buds inside the ear cup.
Place earmuff away from the ears while fitting the ear buds. Insert ear
tips following the ear tip fitting instructions on next page.
Place the earmuff back over the ears. Ensure the retractable, coiled
cable is fully located within the ear cup. Noise reduction will be adversely
affected by anything that breaks the seal of the earmuff cushions.

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Silicone ear tip fitting instructions
DO NOT roll the ear
tip between your
fingers as the tip
has been pre-
shaped for easy
insertion
Place ear tip at an
angle to the plastic
canal
Push the ear tip
firmly over the
plastic canal
Foam ear tip fitting instructions
Ensure hands and
foam tip are clean
before insertion.
Place foam tip at an
angle to plastic
canal
Push the ear tip
firmly over the
plastic canal
Compress the foam
to form a cylindrical
shape being careful
not to crease the
foam

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Gently pull your ear up and backwards with one hand while inserting the
ear plug into the ear. Foam ear tips should be inserted within 5 seconds
of compressing the foam. Make sure the plug seals well into the ear
canal. The ear tip should not protrude out of the ear canal. If using foam
ear tips hold the plug in place for 20 seconds or until the foam has fully
expanded.
OPERATING THE HEADSET
POWER ON:
1. Press and release the “Power” button shown in Figure 1.
2. All the LEDs will turn on briefly, & an audible sound will be heard
through the headset.
3. The Green LED will flash at a normal rate as described below.
POWER OFF:
1. Press and hold the “Power” button for 2 seconds.
2. All the LEDs will turn on briefly and an audible sound will be heard
through the headset as the headset powers off.
MODE:
When the headset is powered up, the unit is set into ‘ mode’**. By
pressing the power button, this toggles ‘ mode’.
‘mode’ allows full situational awareness of your surroundings in
addition to two-way radio communications.
•The power button toggles between Quiet mode
and mode

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•The volume control buttons can be used to raise or lower the
audio level of the mode.
•**The default mode on power up can be programmed using
the Sensear app.
QUIET MODE:
By pressing the power button, this toggles ‘Quiet mode’. Quiet mode only
allows two-way radio communications to pass through the headset.
mode
Green LED, blink twice every 4 seconds
Quiet mode
Green LED, blink once every 4 seconds
SETUP MODE:
Setup mode enables a limited number of settings to be changed directly
via the headset. This mode is separate from the normal headset
operating mode. Some options will not be available if the product model
does not support a feature or headset programming has removed the
setup mode option. For further setup, a programming tablet will be
required,
The options (with fully available feature set) are:
1. Short Range –region
2. Short Range –channel frequencies
3. FM Radio –enable/disable
4. VOX –feature assignment
5. VOX –trigger level
A short press and release of the power button will cycle through these
options when in setup mode.

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Enter/exit setup mode:
1. Headset is powered off
2. Hold Volume Up button
3. While holding Volume Up, Press & release Power button
4. Will hear “system setup”. Release Volume Up button
(short)
Cycle down through system setup options
(long)
Power off the headset.
The headset needs to be powered down before it can be powered up
into its normal operating mode. Changes will be saved upon powering off
the headset from setup mode.
Changing Short Range region: Ensure you hear “short range FM
region”.
/ (short)
Increment/decrement through regions
1, 2 or 3.
Region
EIRP (uW)
Standards
FM frequency range
(MHz)
1
8.02
AS/NZS 4268
88.1 –107.9
2
0.048
EN301357-1
88.1 –107.9
3
0.012
FCC-15.239 /
IC RSS-210
88.1 –97.0

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Changing Short Range frequencies: Ensure you hear “short range FM
frequency”.
/ (short)
Change frequency:
up = increment 0.1MHz,
down = decrement 0.1MHz
/ (long)
Change bank:
up = increment bank,
down = decrement bank
Note, frequency range is 88.1MHz to 107.9MHz (97.0 MHz for region
3).
The frequency/bank last selected in the setup mode will be the
frequency/bank used when Short Range is turned on in normal
operating mode.
Changing FM radio enable: Ensure you hear “FM radio”.
/ (short)
Toggle between “enable” and “disable”.
Changing VOX assignment: Ensure you hear “VOX setup”.
/ (short)
Toggle between “disable” and “Short
Range”
Changing VOX trigger level: Ensure you hear “VOX level”.
/ (short)
cycle through “low”, “medium” and
“high” trigger levels

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“low” is the most sensitive/easiest to trigger VOX and “high” is the least
sensitive/hardest to trigger VOX.
COMMUNICATING
COMMUNICATING OVER TWO-WAY RADIO:
To transmit over the two-way radio:
•Press and hold the button located on the inline PTT.
•Release the inline PTT button to cease transmission.
•To change the volume of the two-way radio communications,
use the two-way radio’s volume controls
Notes:
•When the headset is powered off (and disconnected from the
inline PTT), the inline PTT button may not activate the two-way
radio. The PTT located on the two-way radio should be used.
•When the headset is powered on, the two-way radio PTT may
not activate the two-way radio
COMMUNICATING OVER SHORT-RANGE:
+ (short press) together to toggle Short Range on / off.
When on:
Short Range PTT

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/
(long)
Increment/decrement preset frequency bank
When the headset is powered off it remembers the last selected
frequency bank and the Short Range on/off state.
Short Range VOX: [See Operating the Headset - Setup Mode section for
VOX setup information]
If VOX is assigned to Short Range, when Short Range turns on, you will
hear the Short Range frequency announcement and then “VOX on”. VOX
can be toggled on and off:
+
[short)
Toggle VOX on and off (while Short Range is
turned on)
VOX does not trigger while there is an active signal on the Short Range
frequency. A VOX transmission can be interrupted by pressing and
releasing the Short Range PTT (i.e. MFB).
VOX will also not trigger when two-way is transmitting, Bluetooth®is in a
phone call or when connected to a Bluetooth® radio.
LISTENING TO FM RADIO:
+ (short press) together to toggle FM radio on /off. Note,
FM radio cannot be turned on while Short Range is turned on and vice
versa.

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When on:
/
(long)
Scan up/down to the next FM radio.
When a Bluetooth phone call is entered, FM radio audio is muted. It will
return when the call ends.
When the headset is powered off it remembers the last tuned FM radio
frequency and the FM radio on/off state.
COMMUNICATING OVER BLUETOOTH®:
First time pairing: Press and hold the multi-function button (MFB) to put
the headset into pairing mode. “Bluetooth®discoverable” when pairing
mode is entered. Will hear a connection tone if connection successful.
Pairing mode times out after 2 minutes.
Note, if Short Range is turned on, you must first turn it off to use the
MFB for Bluetooth®pairing (see Short Range section). After the headset
is in Bluetooth®pairing mode, Short Range can be turned back on.
Reconnect: When powered on the headset will try to reconnect to the
last paired device. Alternatively, if the headset is not currently paired to
another device, prompt the reconnection from a device (e.g. mobile
phone that has the headset stored in its device list).
Incoming call
Answer call:
a. From handset
b. Press and release MFB
Reject call:
a. From handset
b. Press and hold Multi-function button