Sensear SM1P Ex User manual

SM1P Ex
MANUAL
ENGLISH
IEC Controlled Document –modifications to this document
must follow IEC Document Control Procedures.
Document
Reference:
Revision:
Date:
IECEx126
AA.02
1/11/2018

IECEx126 SM1P Ex Manual
2 Printed in Australia
English
INTRODUCTION
The SM1P/PW/B/DP/XBT Ex Series of Headsets 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.
The product meets the following international standards for use in
explosive gas environments. Check the product label to identify the ratings
applicable to the headset.
II 1G Ex ia IIC T3 Ga (-20oC ≤ Ta ≤ +40oC)
I M1 Ex ia I Ma (-20oC ≤ Ta ≤ +60oC)
Class I, Division 1 Groups A-D, T3C (-20oC ≤ Ta ≤ +40oC)
Class I, Zone 0, AEx ia IIC T3 Ga (-20oC ≤ Ta ≤ +40oC)
Ex ia IIC T3 Ga (-20oC ≤ Ta ≤ +40oC)
Or
II 2G Ex ib IIC T4 Gb (-20oC ≤ Ta ≤ +40oC)
II 2D Ex ib IIIC T155oC Db (-20oC ≤ Ta ≤ +40oC)
I M2 Ex ib I Mb (-20oC ≤ Ta ≤ +60oC)
Cl I, Div 1 Grp A-D, T4 (-20oC ≤ Ta ≤ +40oC)
Cl I, Zn 1, AEx ib IIC T4 Gb (-20oC ≤ Ta ≤ +40oC)
Cl II, Zn 21, AEx ib IIIC T155oC Db (-20oC ≤ Ta ≤ +40oC)
Situational awareness is provided by processing technology and
environmental microphones mounted within the headset.
Contact through two-way radios is enabled by the SRCK61XXCCXX*
cable assembly available separately. Cable numbers vary depending on
the two-way radio model. Please consult with the website for more
information.
*SRCK61XXCCXX 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 Ex has been designed such that minimal user maintenance is
required. Only those parts listed on page 25 of this instruction manual are
user replaceable.
SPECIFIC CONDITIONS OF USE Potential Electrostatic hazard, clean with
damp cloth only.
WARNING The SM1P Ex 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 SM1P Ex 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 SM1P Ex 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 SM1P Ex
(wired version) shall only be done via an SRCK61XXCCXX SM1P Ex
Intrinsically Safe interface cable. No direct connection to the multi-pin
hirose connector is permitted.

IECEx126 SM1P Ex Manual
4 Printed in Australia
English
ENTITY PARAMETERS
The following entity parameters are for when SM1P Ex is used with
SRCK61XXCCXX at the radio end of the interface cable.
Entity parameter
Value
Ui
8.4 V
Ci
0.15µF
Li
0 µH
Co
≥ Ci + Ccable
Lo
≥ Li + Lcable

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English
MARKINGS
The SM1P Ex contains the following markings:
Hazardous location class and group and temperature class
A scratch-resistant classification label is located at the top of the left-side
earcup on the headset.
Or
where “XXXX” is the number of the ATEX Notified Body responsible for the
ATEX QAN.
Product model, number code and serial number
A product model name, number and serial label are located at the top of
the right-side earcup on the headset.
An eight-digit product code followed by a unique eight-digit serial number
will be visible on the top of the outer cup and of the form:
MFP00PPPSSSSSSSS where ‘MFP00PPP;’ is the product number and
‘SSSSSSSS’ is the serial number
CE mark

IECEx126 SM1P Ex Manual
6 Printed in Australia
English
HEADSET ANATOMY
FIGURE 1

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English
#
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
SRCK61XXCCXX cable assembly
1.16
To the two-way radio
1.17
LED light (one on each side of headset)

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8 Printed in Australia
English
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 Ex 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.

IECEx126 SM1P Ex Manual
10 Printed in Australia
English
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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English
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.

IECEx126 SM1P Ex Manual
12 Printed in Australia
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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.

IECEx126 SM1P Ex Manual
14 Printed in Australia
English
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.

IECEx126 SM1P Ex Manual
16 Printed in Australia
English
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
•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

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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.
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”
5. Release Volume Up button
(short)
Cycle down through system setup options
(long)
Power off the headset.

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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
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

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English
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
“low” is the most sensitive/easiest to trigger VOX and “high” is the least
sensitive/hardest to trigger VOX.

IECEx126 SM1P Ex Manual
20 Printed in Australia
English
COMMUNICATING
COMMUNICATING OVER TWO-WAY RADIO:
Only approved two-way radio cables containing a certified IS barrier
(SRCK61XXCCXX) may be used with SM1P Ex.
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
/
(long)
Increment/decrement preset frequency bank