Connevans CRM-220 User manual

CRM-220 Fastrack Guide Version 2.0 1
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CRM-220 Fast Track Guide
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Connevans recommend using rechargeable nickel metal hydride
batteries. However, if you wish to try out your new CRM-220
immediately, you can alternatively use alkaline PP3 batteries.
Fitting batteries
To fit a battery, slide open the battery cover, insert as shown.
Although there is a battery polarity label in the CRM-220
between you and me you can actually fit the battery either way
around and it will still work!
Rechargeable nickel metal hydride (NiMH) batteries
New rechargeable batteries require charging before use, the
charger recommended by Connevans is an intelligent quad
charger (Part no. 22684).
1 Plug in the batteries to be charged. New batteries will need
a firm push into the charger – we would suggest using the
flat of the hand. Try lifting the battery a little, if it comes
straight out it was not pushed in properly.
2 Instructions for using the quad charger
are simply:
a) Insert battery
b) don’t touch ‘mode’ button
c) battery is charged when display
shows ‘RDY’.
The performance of the CRM-220 is the same
whatever type of battery is used.
Part 1 Batteries
Page 33 – CRM-220 User Guide
This Fast Track Guide takes you through the basic steps required to get your
CRM-220 working.

CRM-220 Fastrack Guide Version 2.0
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Part 2a Turning on
1 Connect an aerial into the CRM-T220 transmitter.
2 Turn on the transmitter using the toggle switch on the
top panel. The battery low indicator should give you a
confidence wink.
3 Note the operating channel letter of the transmitter,
this is shown on the right of the top panel label.
4 The CRM-R220 receiver has a 2 channel capability
however most receivers are used with just the
resident channel.
Check the resident channel on the receiver, is it the same
channel as the transmitter?
5a If the transmitter frequency is the same as the
receiver resident channel, turn on the receiver by
moving the toggle switch to the right towards the
channel number. The battery low indicator should
give you a confidence wink.
5b If the transmitter frequency is NOT the
same as the receiver resident channel,
you require a plug in frequency/channel
module. Modules have their frequency
engraved on the front and are fitted in the
front of the receiver.
When using a channel module the
receiver is turned on by moving the toggle
switch towards the word module.
The battery low indicator should give you
a confidence wink.
The channel on the transmitter MUST match
the channel used on the receiver!
1 Plug the ‘listening stick’ into the
CRM-R220 receiver output socket (O/P).
Part 2b Using a ‘listening stick’ to check the CRM-220
system
Hearing aid users setting up a CRM-220 for themselves should skip this section
and move on to Part 3.
2 Give the CRM-T220 transmitter to a
colleague and ask them to walk to the
other side of the room while talking into
the microphone at 150mm (the length of a
biro) from the mouth.
3 Using the listening stick, listen to the
CRM-R220 receiver adjusting the Tx
volume to a comfortable level using
the supplied twiddling stick.
Assuming you are able to hear your colleague
talking, well done – you are halfway to a fully
working system.
The next step is to get the hearing aid(s) working
with the CRM-R220 receiver.
Page 36-37 – CRM-220 User Guide

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Version 2.0 CRM-220 Fastrack Guide CRM-220 Fastrack Guide Version 2.0
1 Plug in a neck loop.
2 The hearing aid user should listen at
arm’s length to somebody talking, to
establish the level of sound from the
hearing aid alone. Page 40 of the user
guide explains further as to why we do
this.
3 The hearing aid wearer should take the
receiverand place the neck loop around
their neck. They should then turn their
hearing aid(s) to the ‘T’ position.
4 Make sure that both CRM-220 units are
turned on.
5 The helper should take the
CRM-T220 transmitter and walk to the
other side of the room while talking into
the microphone at 150mm (the length
of a biro) from the mouth.
6 The hearing aid user should be able to
hear the helper through the CRM–R220 receiver by
adjusting the Tx volume up to a comfortable level
using the supplied twiddling stick.
Congratulations, it’s as simple as that!
If nothing is heard with the hearing aid, a hearing helper
could listen using a listening stick. If they can hear with the
listening stick then any problem must lie with either the
hearing aid or the neck loop.
The hearing aid ‘T’ position can be roughly checked by
moving the hearing aid near to a mains transformer
(e.g. any plug-in power supply) when you should hear a
buzz or hum. The neck loop can be checked by
exchanging it for a spare one.
Part 3a Using a CRM-R220 receiver with an inductive
neckloop and hearing aid on ‘T’
1 Ensure that the ‘Tx’ volume is at minimum.
2 The hearing aid user should listen at arm’s
length to somebody talking, to establish the
level of sound from the hearing aid alone.
Page 40 of the user guide explains further as
to why we do this.
Please read the hearing aid user instructions
to determine which hearing aid control
settings are required to use direct input.
3 Plug the direct input lead into the ‘O/P’
socket and connect to the direct input shoes
and hearing aids. It may be necessary to
temporarily remove the hearing aids to do
this.
4 Make sure that both units are turned on.
5 The hearing aid wearer should take the receiver
and can now refit their hearing aids.
6 The helper should take the CRM-T220 transmitter
and walk to the other side of the room while
talking into the microphone at 150mm (the length
of a biro) from the mouth.
7 The hearing aid user should be able to hear the
helper through the CRM-220, adjusting the receiver
Tx volume control to a suitable level using the
supplied twiddling stick.
It may be necessary to repeat the comparison of
sound from the hearing aid microphone and sound
through the radio aid system.
Congratulations, you now have a working system!
Part 3b Using a CRM-R220 receiver with a direct input
hearing aid
Page 30 – CRM-220 User Guide
Page 31 – CRM-220 User Guide

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Using a CRM–220
This fast track guide is designed to get you started
with your new CRM-220 quickly and easily.
There are several other useful accessories to help
gain better use of your CRM–220, such as a
conference table microphone or tv.
The use of these are explained in the main
CRM-220 User Guide & Reference Manual.
In an ideal world, setting the volume controls (and the treble and bass tone) would
be done with the help of an audiologist, however it is also possible for a good
listener to set their own listening preference.
The objective is
very simply that the sound heard
at a distance through the CRM-
220 should be similar or louder to
the sound heard from the hearing
aid on its own at close range in a
quiet room.
Volume controls
The CRM-220 volume should be set by a comparison method.
1 Initially establish a satisfactory
listening level with the hearing
aid(s) alone, at arm’s length
from somebody talking to you.
2 Turn on the CRM-220 system,
give the transmitter to your
helper and ask them to walk
away whilst talking into the
microphone at 150mm (the
length of a biro) from the mouth.
3 You should now listen to the hearing aids but this time through the CRM-220
receiver. Use a twiddling stick to adjust the transmitter volume control (Tx) to
match, or be slightly louder than, the original listening level through the
hearing aid alone.
Be careful not to overbalance hearing aids or cochlear implant processors that have
Wide Dynamic Range Compression, although the aid will adjust itself there will be
an increased level of background noise and loss of quality. Always adjust by turning
the volume upwards, if necessary turn the volume down and slowly back up again.
Tone controls
Setting the tone controls is straightforward but most users do not need to adjust
them at this stage.
Part 4 Setting the volume
=
Pages 29 & 40 – CRM-220 User Guide
www.connevans.com
– the information website for Connevans
www.DeafEquipment.co.uk
– the e-commerce website for Connevans
where you can order spares online.

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Using CRM-220
Transmitter with integral
microphone
Lapel microphone
Using CRM-220
Transmitter with
lapel microphone
CRM-220
Transmitter
Part No. 2250
Sound input
Black stub microphone
head
Part No. FMG211
Tx with neck
harness
Tx with belt
harness
Tx with hip
pouch
Lapel clip for black
stub mic head
Part No. FMG212
CRM-220 aerial
supplied with
transmitter,
fits into bottom of
Tx with a push fit. CRM-220 Transmitter
with lapel mic and
aerial
Note: internal
microphone is
automatically disabled
when lapel mic is in
use.
Please refer to the Instruction Booklet for full information, however the following illustrations will
give you a quick guide to ‘what goes where’.
Putting a CRM-220 system together
CRM-220 stub
microphone lead
Part No. 2271500R
Sound input
External audio
equipment will plug
in here
Using CRM-220 Transmitter with
conference microphone
Wearing the CRM-200 transmitter
Connecting to TV
Connecting to external audio source
Connecting CRM-220 to external
equipment
SCART plug to
phono sockets
Part No.  T114 
Pack of stereo
audio leads
Part No. 2206PKS
TV
The microphone pack (Part no. 22364)
contains 3 items; a microphone head, lead and
lapel clip.
The microphone head plugs directly
into the lead
with a push on fitting.
Page 27 – CRM-220
User Guide
Page 16 – CRM-220
User Guide Page 45 – CRM-220 User Guide Page 42-44 – CRM-220 User Guide and
Connevans Catalogue – Sections 1 & 11
Page 16 – CRM-220 User Guide and
Connevans Catalogue – Sections 1
CRM-T220
transmitter stereo
input adaptor
Part No. 2206S
A transmitter input adaptor allows you to
connect a CRM-T220 transmitter to other
equipment such as TV, video or hi-fi.
Page 22-23 – CRM-220
User Guide
Tx and conference microphone in centre of
table
Conference mic plugged into receiver,
presenter wearing transmitter

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Rx with
child’s
body
harness
Rx with
bum bag
Rx with belt
harness Rx with belt
pouch
Wearing the CRM-220 Receiver
Listening stick test kit
Both multiturn plastic and fabric neck loops
have similar performance but the plastic loop
is usually preferred.
Rx with neck
loop plus lapel
microphone
Rx with direct input V lead plus hearing aids and
shoes
Direct input V lead
DV300mm-1metre
Listening stick test kit for CRM-220 Part no: 22874
CRM-220 receiver testing
stick only
Part No. 22875
Page 20 – CRM-220 User Guide and
Connevans Catalogue – Section 1
Page 21 – CRM-220 User Guide and
Connevans Catalogue – Section 1
Page 36-37 – CRM-220 User Guide and
Connevans Catalogue – sections 1 & 6 for separate items and spares.
Pages 22-23 – CRM-220 User Guide
Multiturn
plastic neck loop
and patch cord
Part Nos. FMG441 &
293/200-700mm
Stetoclip is used to listen to the hearing aid
either through the earmould or direct to
earhook.
max release
Stetoclip listener and
variable attenuator
Part No. 22880F
Variable attenuator has a
roller wheel to allow hearing
aids to be listened to at a
comfortable level.
Receiver testing stick is used to
listen to the receiver output
Fabric neck loop
Part No. 225WH
Using CRM-220 Receiver with neck loops

Connevans Limited
54 Albert Road North, Reigate, Surrey RH2 9YR
Switchboard 01 737 247571
Text/Minicom 01 737 243134 Fax [phone]
Email [email protected]
Information website: www.connevans.com
Online shopping: www.DeafEquipment.co.uk
2222FAST V2.0 May 2005