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BASIC OPERATION OF YOUR VOICEDUCER

Introduction

The VOICEDUCER provides two-way communications from a small
device worn in the ear. The accelerometer microphone provides a
signal-to-noise ratio equal to or exceeding the best noise-canceling
microphones, which enables voice clarity to be maintained under
conditions of high ambient noise. In the event hearing protection is
required, the earpiece is small enough to wear under earmuffs. When
suitable earmuffs are used, the operating range of the earpiece may
be extended up to 125 dB noise levels. Otherwise, the user retains
the ability for direct hearing and speaking under normal ambient
noise conditions. The user's face is left unobstructed. In fact, the ear
microphone provides completely clear, intelligible voice transmissions
even in situations where the mouth is obstructed or speech is muffled
by protective clothing, a face guard or breathing apparatus. The user
consequently is afforded a much greater degree of freedom than has
previously been possible with two-way radios.
When properly inserted in the ear, the earpiece should feel
comfortable and secure. The ear microphone detects speech-induced
bone vibrations via direct contact with the ear canal wall. Thus, the
speech conduction process takes place entirely inside the head.
Because these vibrations occur whether one speaks softly or yells,
you only have to speak at a moderate level for high speech clarity,
even in high noise areas. It is not necessary to yell above the
background noise in order to be understood. In addition, the ear
microphone utilizes a quality sound-pressure receiver making radio
transmissions easy to hear under noisy conditions.

Ear Microphone Installation

1.

Unscrew the battery hatch
on the bottom of the
interface module and insert
a fresh alkaline battery
(AAA 1.5V).

Summary of Contents for Voiceducer MDRMN4044

Page 1: ...cessories Professional Radio Ear Microphone System Sistema Microauricular en Audífono Système de microphone auriculaire VOICEDUCER Modul mit Ohrhörermikrofon Ñèñòåìà íàóøíèêà ìèêðîôîíà MDRMN4044 MDRMN4045 ...

Page 2: ...anced electronic circuitry with rugged construction enhancing performance strength and reliability while reducing the unit s size and weight The advancements include FM conformed circuitry Shielded cable which minimizes adverse RF interference Kevlar reinforced ear microphone cable Die cast housing The VOICEDUCER represents a viable alternative to a headset with boom microphone or a hand held spea...

Page 3: ...nd MDRMN4045 VOICEDUCER Ear Microphone Systems Refer to the OPTIONAL ACCESSORY ITEMS list on page 15 C a u t i o n This Interface Module is Approved for hazardous location classification Class I Division 1 Groups C and D and Class I Division 2 Groups A B C and D When connected to radios Approved for Class I and II Division 1 Groups C D E F and G the combination is reduced to Class I Division 1 Gro...

Page 4: ...r Type Rated input Rated output S P L Electromagnetic receiver 1 mW 106 dB C 5 dB at 1 mW 1 kHz 0 dB 20µPa Interface Module Power supply Min operating voltage Operating temperature AAA 1 5 V alkaline battery 0 9 V 20 60 C PTT Interface Module Battery life Dimensions Housing Weight 40 hrs Alkaline continuous transmit 39mm W X27mm D X95mm H 170g VOX Interface Module Battery life VOX rise time VOX ha...

Page 5: ...well as miniature receiver component Ear Microphone shell Houses the accelerometer microphone and electromagnetic receiver Silicone Eartip Replaceable facilitates user comfort and hygiene Ear Microphone Connector Cable Kevlar reinforced and allows connection of the ear microphone to the interface module Pin Assignments 1 Transmit Audio white 2 Receive Ground shield red 3 Receive Audio red 4 Vacant...

Page 6: ...ansmission continuous red when the push to talk PTT switch is pressed or while transmitting in Voice Activated Transmit VOX PTT Switch Pressing the PTT switch engages the radio transmitter Battery Hatch Provides access to the battery housed inside the interface module Remote PTT Jack Allows for connection of a variety of remote PTT switches PTT VOX Selector Switch Selects between PTT or VOX VOX In...

Page 7: ...ations where the mouth is obstructed or speech is muffled by protective clothing a face guard or breathing apparatus The user consequently is afforded a much greater degree of freedom than has previously been possible with two way radios When properly inserted in the ear the earpiece should feel comfortable and secure The ear microphone detects speech induced bone vibrations via direct contact wit...

Page 8: ... until it is seated firmly in the ear 7 Loop the cord over and behind the ear Note the position of the cord where it intersects the ear microphone the cord points forward about 45 degrees 8 There are two styles of ear holders available as optional accessories that provide added security in keeping the earpiece firmly positioned in the ear You may purchase an ear holder in a specific size S M L and...

Page 9: ...pproximately three inches 7 cm of cable between the earpiece and ear holder as shown in the drawing Close the holder and reattach the outer clip Insert the earpiece in the ear as described in Steps 5 6 and 7 Put the ear holder up against the ear and pull the ear through the slot Be sure that the earpiece is firmly in the ear canal to ensure proper communications 9 The ear microphone comes equipped...

Page 10: ...io on make sure the volume is turned down 2 Turn the radio on Listen until you hear a transmission adjust the volume control to a comfortable listening level 3 When the channel is open press and hold down the PTT switch on the front of the interface module and speak clearly When you have finished talking transmit release the PTT switch to listen receive 4 While transmitting the transmit indicator ...

Page 11: ...sition Operation 1 Connect the interface to the Professional Radio audio accessory port and turn on the radio 2 Place the earpiece into the ear as described in the manual and turn the VOX PTT selector switch to VOX Note When using the VOICEDUCER VOX system with the Professional Radio do not program VOX into the radio In addition the VOICEDUCER VOX does not provide voice sidetone so you will not he...

Page 12: ...mooth VOX communications 2 The PTT switch on the VOX interface remains functional even when the system is operating in VOX mode 3 When your voice is picked up by the VOICEDUCER earpiece and the VOX circuit is activated you will hear a short BEEP confirming your transmission Continue speaking after hearing this tone It takes about 1 3 seconds for the VOX circuit to deactivate itself after you stop ...

Page 13: ...he cable may be concealed under your shirt or coat sleeve Body Switch PTT Motorola part number 0180300E83 Motorola also provides an optional body switch PTT with clothespin clip which allows for remote operation of the VOICEDUCER 1 Connect the body switch PTT plug to the jack located at the bottom of the interface module Locate the raised arrow on the body switch PTT plug and insert as shown 2 The...

Page 14: ...y VOX Interface Module Only Unscrew the back of the interface module using a Phillips screwdriver see diagram Turn the pot screw labelled VR2 clockwise to increase the sensitivity or counterclockwise to decrease the sensitivity Transmit Volume Unscrew the back of the interface module using a Phillips screwdriver Turn the pot screw labelled VR1 clockwise to increase the transmit volume or countercl...

Page 15: ...power 2 The alert tone will be heard via the VOICEDUCER ear microphone in the ear In either PTT or VOX mode you will have approximately one hour in which to replace the battery once the alert tone starts 3 The battery is easily replaced via the battery hatch located at the base of the interface module Counterclockwise loosens the hatch clockwise tightens it CLEANING PROCEDURES The ear microphone e...

Page 16: ...ngs 8 Check the VOICEDUCER by switching radios 9 Should you still have difficulty please contact your dealer or local service facility immediately OPTIONAL ACCESSORY ITEMS Motorola Part Number Description BDN6677 Ear Microphone for std noise levels up to 95dB black BDN6678 Ear Microphone for std noise levels up to 95dB beige BDN6641 Ear Microphone for high noise levels up to 105dB grey 0180358B38 ...

Page 17: ...16 Français English ...

Page 18: ...os A Motorola et Professional Radio sont les marques déposées de Motorola Inc VOICEDUCER est la marque déposée de Temco Japon Co Ltd Kevlar est la marque déposée de Dupont Co Imprimé au Royaume Uni 10 00 Tous droits réservés A Motorola und Professional Radio sind Warenzeichen von Motorola Inc VOICEDUCER ist ein eingetragenes Warenzeichen von Temco Japan Co Ltd Kevlar ist ein eingetragenes Warenzei...

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