BHI NEIS-RM User manual

NEIS-RM Intercom Operating Manual
NEIS-RM Intercom Operating Manual
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Important Information
Copyright
This publication, including all photographs and
illustrations is protected under international copyright
laws, with all rights reserved. Neither this manual, nor
any of the material within, may be copied or reproduced
without the written consent of bhi Ltd.
Disclaimer
The information in this document is subject to change
without notice. bhi Ltd. makes no representations or
warranties with respect to the contents hereof and
specifically disclaims any implied warranties of
merchantability or fitness for any particular purpose.
Furthermore, bhi Ltd. reserves the right to revise this
publication and to make changes from time to time in
the content hereof without obligation of bhi Ltd. to notify
any person of such revision or changes.
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NEIS-RM Intercom Operating Manual
NEIS-RM Intercom Operating Manual Page 3
Packing List:
Please check the contents of the box.
• Operating manual
• NEIS-PSU-Medicalpowersupply withworldwideadapters
•NEIS-MIC-Remotemicrophone
• NEIS-DU - Desk console
•NEIS-SPKR- Loudspeaker unit
Note: We recommend that installation be carried out by qualified
personnel.
Please study this manual before attempting to install the intercom.
To install this intercom you will need the following additional items:
•CAT5networkcable/connections(straight-through).
•Suitable fixings for mounting the loudspeaker
• Suitable tools for installation of the above
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NEIS-RM Intercom Operating Manual
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1. Introduction.
1. Introduction.
1.1 System overview:
ThebhiNEISNoiseEliminatingIntercomSystem enablesclear voice
communicationsfrom withinnoisyenvironments.Usingunique Digital
Signal Processing (DSP) technology, unwanted noise and
interferencepickedup by the microphone in the communicationcan
beremovedfromthesignaltoleave clear intelligible speech.
The NEIS is suitable in a wide range of noisy applications, where
the sounds of fans, motors, engines, air-conditioning, traffic etc.,
give rise to poor voice communications. The system is particularly
useful for improving the voice quality in medical and industrial
environments, where noisy machines can make voice
communication difficult.
Usingminimalhardwarecomponents, theinstallationand operation
of the bhi intercom system is very easy, connections being made
viaasingle cat 5datacable.The NEIS ispre-configuredfor optimum
noise cancelling, and is fully adaptive to changing environmental
conditions. Itissuited to a varietyofapplications, where clear “noise
free” two-way voice communications are important, including:
Hospitalradiotherapy/radiology treatmentrooms,mines, railway and
transport depots, customer help points, factories & office
communications.In fact theNEIS provides a simpleeffectivesolution
for anyone trying to communicate from within a noisy environment.
Simply plug in the power and the system is ready to go.
TheNEIS consistsof a stylish, robust, desktop speaker control unit,
with a “push-to-talk” button, connected to a remote “hands free”
speaker unit, with a remote microphone attached. This allows the
noisy location to be constantly monitored, an important feature for
safety critical environments.
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4. Operation.
4.2 Loudspeaker control.
Figure 8. Rear view of loudspeaker unit
Thevolume of the loudspeakercanbe adjusted bytherear mounted
control.
Push To Talk
Thedesk console unitdefaultmode istolisten totheremote speaker,
all speech at the remote speaker will be heard when the unit is
switch on. Press and hold the Push-to-talk (ptt) switch to enable
communication to the remote speaker, release the button to hear a
response back from the user.
Remote Privacy
For privacy at the remote speaker end, turn the system off using
the Volume ON / OFF control on the desk console unit.
Note: Using this function will mean that the user will no longer be
monitored.

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1. Introduction.
1.2 Features:
Up to 98% noise reduction
Clear two-way voice communications
Superb audio quality using bespoke audio circuits
Easy to install modular system
Simple connection via single cat 5 computer cable
Stylish desktop speaker console with “push to talk”function
Robust speaker unit with remote microphone & separate
volume control
Noise filter Monitor switch
On/off volume control switch
Medicalpowersupply12VDC(1.25A)
Dims (WxDxH) Speaker unit 180 x 160 x 240mm
Dims (WxDxH) Control unit 150 x 220 x 70mm
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4. Operation
4. Operation.
4.1 Desk console controls.
Figure 7. Rear view of desk unit
Power on/off
volume control Noise cancellation
on/off switch
CAT5Loudspeaker
connector Power
connector
Power On Off
Ensure the power supply is plugged in at the wall socket and the
wall socket is turned on. Using the on/off Volume control knob on
the rear of the desk unit, turn on the unit.
Noise Cancellation
Thedeskunit is pre-set for optimumnoisereductionand adjustment
isnotnormallynecessary. The noise cancellationswitchontherear
oftheunit can be usedtomomentarilydisable thenoisecancellation
system, hold the switch up in the off position and all noise will be
heard from the remote speaker. Release the switch and the noise
willbe removed. Adjust thevolumecontrol foracomfortable listening
level.

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2. Intercom description.
2.2 Intercom component description.
2.2.3 Desk console unit.
The desk console unit is best located in a quiet area (normaly the
equipment control room), and receives audio from the user in the
noisy area through its small loudspeaker. It has a push-to-talk (ptt)
buttononthefront to enable speech back to the user. Theunithasa
poweron/off switchwith volumecontrol, aseparatenoisefiltermonitor
switch on rear of the unit, a noise filter level select switch on the
bottom of the unit. This unit contains the noise cancellation
electronics to enable the removal of any noise that is present with
thevoice signal.Theunit connectsto thecat5 cablevia theconnector
on the rear of the unit.
NEIS-RM Intercom accessories:
1080-MICEXT30- 30ft NEIS-MICextensioncable
1080-MICEXT50- 50ft NEIS-MICextensioncable
NEIS-MICSTD-Adjustablemicrohonestandwith Boom
assemblyandNEIS-MIC holder
Contactbhiformore information.
2.2.1Loudspeaker unit.
Theloudspeakerunitmountsinasuitablelocation in the noisy area
to give optimum voice quality to the user. The unit features a
separate volume control, enabling the speaker output volume to be
set up to suit the surrounding conditions and environment. The cat
5 cable connects at the rear of the unit.
2.2.2Remotemicrophone.
The remote microphone connects to the rear of the loudspeaker
unit, and is best placed as near to the user as possible to obtain
optimum audio performance. The most common routing of the
microphonecableis through the ceiling andsuspendeddown in-line
withthe patients face and as near to their mouth as possible. It can
alsobe clippedinsidethe gantryusinga standardplasticcable holder
or ty-rap.
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3.4 Cable connections.
Figure 5. CAT5 cable connections.
3. Installation.
Connections:
Connectionsare madeusingstandardCAT5straight-through twisted
pairRJ45cables
NEIS-DU NEIS-SPKR
7 = White/Brown 7 = White/Brown
8 = Brown 8 = Brown
1= White/Orange
2 = Orange
3 = White/Green
4 = Green
5 = White/Blue
1= White/Orange
2 = Orange
3 = White/Green
4 = Green
5 = White/Blue
6 = Blue
6 = Blue

NEIS-RM Intercom Operating Manual
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3. Installation
3. Installation.
3.1 Basic installation diagram.
Desk console
Powersupply
Quiet area Noisy area
Remote
Microphone
Loudspeaker
CAT5 cable
Figure 2. Basic block diagram.
Figure 3. Power supply.
Push pins onto
power supply body
3.2 Power supply.
The medical power supply used for the NEIS is a modular unit, and
consists of a modular pin unit and the power supply so as to
accommodatethedifferent typesofvoltage and connectionsaround
the world. Before the power supply can be used, plug the pin unit
supplied onto the power supply body until it clicks into place.
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3.3 Loudspeaker mounting.
Figure 4. Loudspeaker connections.
Rear of speaker unit
Close up of
connections and
controls
Volume
control Microphone
connector
CAT5 cable
connection
Microphone
assembly -
25ft
3. Installation.
Mount the wall bracket supplied with the speaker unit in a suitable
locationin the noisy area, so that it optimizes the audio for the user.
The microphone and cat 5 cable should be connected at the rear of
the speaker before the speaker is secured into the bracket, and the
microphone should be mounted at least 1 metre away from the
speaker.