GN Resound Discover V series Technical Manual

GN ReSound as

Global Technical Operations

gto.gnresound.com

Lautrupbjerg 9 • DK-2750 Ballerup • Denmark

Phone: + 45 45 75 23 16 • E-mail: [e-mail]

Technical Manual

Discover V BTE

Doc. No. 0012680 rev. E

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Technical Manual for Discover V BTE

Subject Page

Description ..................................................................................................... 3

Typical performance data IEC 60118-7/ANSI (2cc coupler) ........................ 4-6

Part lists ...................................................................................................... 7-8

Diagram.......................................................................................................... 9

Microphone complete ................................................................................... 10

Receiver complete ........................................................................................11

Amplifi er .................................................................................................. 12-14

Instrument complete in housing ................................................................... 15

Instrument complete & programming cable ................................................. 16

Table of contents

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Description

The Discover V BTE is a fully digital Behind-The-Ear (BTE) hearing instrument developed to set a new standard for
affordable and fundamental hearing care. The instrument offers a two band signal processing with Advopro Digital, which
suppresses dirsturbances caused by the user’s own voice and at the same time maintains amplifi cation of the
frequencies important for understanding speech. The clear sound, reliable design, easy battery change, long battery
lifetime and low battery warning indicator is all standard.

Discover V is available in beige, brown and grey colors.
No battery is required during programming - power is supplied via prog. cable CS45.
Battery type 13. Estimated average battery life 217 hours.

Key features :

4-band Wide Dynamic Range Compression (WDRC).

4-band shaping handles.

Feedback Management via Notch fi lter.

Long battery lifetime.

User-friendly design.

Audiogram + fi tting rule.

Digital Noise Clarifi er.

Clear, more comfortable sound.

For moderate to severe hearing loss.

Standard confi guration :

Volume control.

Telecoil.

Acoustic indicator for programme selection.

Low battery warning indicator.

Fitting requirements :

HI-PRO™ or NOAHLink™ interface.

NOAH software™ (2.x or 3.x).

Aventa™ fi tting software (1.5 or higher).

CS45 socket programming cables.

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Typical performance data - IEC 118-7

No battery is required during programming - power is supplied via prog. cable CS45

Data in accordance with IEC 118-7. All sound pressure levels (dB SPL) refer to 20 μPa.

Unless otherwise is stated, data are based on a battery voltage of 1.35 V and impedance of 5 Ohm.

Tolerance Unit

Reference test gain (60 dB SPL input) at 1600 Hz 37 +/- 5 dB

Full-on gain (50 dB SPL input) Max. 57 +/- 5 dB

at 1600 Hz 47 +/- 5 dB

Maximum output (90 dB SPL input) Max. 126 +/- 4 dB SPL

at 1600 Hz 120 +/- 4 dB SPL

Total harmonic distortion at 800 Hz 0.5 +3 %

at 1600 Hz 0.3 +3 %

Telecoil sensitivity (1 mA/m input) Max. 88 +/- 6 dB SPL

Telecoil sensitivity (10 mA/m input) Max. 108 +/- 6 dB SPL

Equivalent input Noise w/o Noise reduction 25 +3 dB SPL

Frequency range (DIN 45605) 160-6000 Hz

Current drain 1.2 +20% mA

Typical Battery Life Time Battery type 13 217 hrs

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Typical performance data - ANSI

No battery is required during programming - power is supplied via prog. cable CS45

Data in accordance with ANSI S3.22-1996. All sound pressure levels (dB SPL) refer to 20 μPa.

Unless otherwise is stated, data are based on a battery voltage of 1.35 V and impedance of 5 Ohm.

Tolerance Unit

Reference test gain (60 dB SPL input) HFA 40 +/- 5 dB

Full-on gain (50 dB SPL input) Max. 57 +/- 5 dB

HFA 50 +/- 5 dB

Maximum output (90 dB SPL input) Max. 126 +/- 4 dB SPL

HFA 122 +/- 4 dB SPL

Total harmonic distortion at 800 Hz 0.5 +3 %

at 1600 Hz 0.3 +3 %

Telecoil sensitivity (10 mA/m input) Max. 108 +/- 6 dB SPL

Telecoil sensitivity (10 mA/m input) HFA 100 +/- 6 dB SPL

Equivalent input Noise w/o Noise reduction 22 +3 dB SPL

Frequency range 170-6000 Hz

Current drain 1.5 +20% mA

Typical Battery Life Time Battery type 13 217 hrs

Reference test gain settings

Gain 34 34

Reference test gain settings

Gain 41 41

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Typical performance data- IEC 118-7

130

120

110

100

90

80

70

60

50

40

30

20

10

0

100

1000 10000

100

1000 10000

No battery is required during programming - power is supplied via prog. cable CS45

2cc
Coupler

Frequency:

Maximum Output Full-on and Reference Test Gain

Frequency:

Full on Gain 50
dB SPL input

Reference Test
Gain 60 dB SPL

2cc
Coupler

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Part list

Item Part No.

Receiver, type EF-7505 15301800

Rec. tube/nipple (50 pcs.) 31932254

Rec. suspension 70911569

Rec. shield, metal 70921910

Rec. Wire ESW 7x32μ, green 20 mm 15129820

Rec. Wire ESW 7x32μ, amber 20 mm 15129720

Rec. complete (with tube, wires) 15248900

Microphone, type EM3446CX 75927771

Mic. suspension (50 pcs.) 31932216

Mic. Wire ESW 7x32μ, green 10 mm 15129810

Mic. Wire ESW 7x32μ, amber 10 mm 15129710

Mic. Wire ESW 7x32μ, red 10 mm 15129610

Mic. complete (with susp. wires) 15248800

Hook complete with fi lter (50 pcs.) 31929998

Screw for housing (100 pcs.) 31929996

Amplifi er 15249000

Volume control 70924614

Nut for VC 70911081

Telecoil 15284900

Switch 70927017

Item Part No.

Nut for switch 70911081

Support for switch 70921822

Switch board 15340300

Switch compl. mounted on switch board 15287500

Support compl. w/progr. socket CS45 70929930

Battery spring +/- (100 pcs.) 31932190

Cu-wire GN 12/12 green, solid 12 mm) 70927136

Partition 70930869

Bolt/screw for springs/patition 75921693

Glue CH-8 75925421

Glue CH-7 75925336

Vaseline, 100 ml. 15255601

Loctite 406 1901-339

Coating, EGC-1700, 100 ml 15290401

Silicone coat 1908-209

Programming cable red, CS45, 5 pol 50927672

Programming cable blue, CS45, 5 pol 50927673

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Part list

HI Dummies Discover V

HI Complete Discover V

Housing part list : Part No.

Beige color:

Housing upper/lower part with s/n # 15249400

Battery door 15250200

progr. socket cover 70921851

Microphone ring 70921808

Brown color:

Housing upper/lower part with s/n # 15249401

Battery door 15250201

progr. socket cover 70921852

Microphone ring 70921809

Grey color:

Housing upper/lower part with s/n # 15249402

Battery door 15250202

progr. socket cover 70921853

Microphone ring 70921810

Item Part No.

Beige 15209600

Brown 15209601

Grey 15209602

Item Part No.

Beige 15248300

Brown 15248301

Grey 15248302

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Diagram

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Microphone complete

Solder the wires as shown. The wires
should slope 45

o.

Brush coating CH-8

- p/n 75925421 - onto the solder points

Mic. without wires and suspension:
p/n 75927771

Red ESW wire, 10 mm. p/n 15129610
Amber ESW wire, 10 mm. p/n 15129710
Green ESW wire, 10 mm. p/n 15129810

Mount the mic. into the mic. suspension, p/n 31932216
(50 pcs.)

Mic. complete mounted with wires
and suspension, p/n 15248800

Notice: Before mounting mic. complete into the sound inlet
groove in the housing, add Vaseline p/n 15255601 to the groove

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Receiver complete

Mount the rec tube, p/n 31932254/50
pcs.) in an angle of 23

o

as shown. Add
a drop of Loctite 406 (p/n 1901-339)
each side to fi x it. Glue with CH-71 (p/n

75925336) around tube to make it tight to
the sound outlet of the rec

Add Loctite 406 on both inner sides of the metal shield before mount­ing it on the rec. Make sure the lower side of the shield is mounted to
the edge of the rec (indicated by a red dotted line). Mount the suspen­sion (p/n 70911569) as shown and glue a bit with CH-8
(p/n 75925421) to keep the suspension in place onto the shield/rec

Gently bend the wires and fi x them to the rec case
by using CH-8. Rec complete mounted with wires,
suspension, tube and shield p/n 15248900

Before mounting the tube into the stud/sound
outlet, add Vaseline p/n 15255601 round the
tube on the area which is not to be cut off

1

2

3

4

Solder the green and amber wires as shown
and apply CH-8 onto the soldering points.

Rec without wires, suspension, shield and
tube: p/n 15301800.

Amber ESW wire, 20 mm. p/n 15129720.
Green ESW wire, 20 mm. p/n 15129820.

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The prog. socket is glued with
Loctite 406 p/n 1901-339 to fi x
it into the inlay/support 2000
DIG-17 p/n 70929931

Amplifi er

Telecoil is glued to the PCB
with CH-8 p/n 75925421
and connected on the other
side of the PCB

Green mic.

Red mic.

Rec wires

Program socket
wires (The Red wire
is cut off)

Amber mic.

The amp is delivered without battery contacts
and transducer wires as shown
Amp p/n 15249000

Telecoil

wires

Note: All soldering points must always be covered
with coating EGC-1700 p/n 15290401.

Nut for VC

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Amplifi er

When replacing the switch p/n
70927017, cut the two terminals
as shown

Mount the sw supp on the sw board.
Mount the switch and bend the terminals
onto the soldering points

Solder the terminals and apply
CH-6 p/n 75925308 in the 2 holes

Apply Coat p/n 1908-209 as indicated in pictures 4-5.

The switch complete mounted (as shown in pic. 3) is also available as p/n

15287500.
How to replace: Disconnect the sw board wing and the points which con­nect the sw board to the main board. Lift up the defective part and place the
new one into the housing. Connect the new sw board to the main board and
the sw board wing to the bat spring (+)

2

Sw board

Sw supp

3

CH-6

Points which con­nect the sw board
to the main board

Sw board “wing”
to bat (+)

5

4

1

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Prepare Amplifi er for mounting into Housing

Solder the 3 mic. wires to the PCB.
Gently adjust the wires and make
sure the wires are placed correct
round the screw hole in housing
(see also next page). Add CH-8 on
the solder points

Solder the 2 rec wires to the PCB. Gently adjust the wires and add CH-8
on the solder points, in the notch and on rec case to fi x the wires

Fill the area between the nylon insert and the switch-PCB with grease p/n
6879-199. Do not cover the bolts and the areas which will be visible from
outside (indicated with blue color)

Solder the green wire from battery
spring (-) to the PCB. Solder the
switch board “wing” to the battery
spring (+) and apply CH-8 on both
points

Insert bolts p/n 75921693 (see
next picture).Fix the battery springs
into the partition and solder the
green solid wire (p/n 70927136) to
battery spring (-) (yellow arrow).
Apply CH-8 p/n 75925421 on the
solder point

Place partition complete into lower
housing.Add coat p/n 1908-209 on
the lower area of the partition as
indicated with blue color

Bolt

Bolt

sw board “wing” to
bat (+)

green wire from bat (-)

CH-8

notch

Green
solid wire
to (-)

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Instrument complete in housing

Mic. ring (p/n 70921808/BG,
70921809/BR, 70921810/GR)
is mounted without using glue

Screws for HSG

p/n 31929996 (100 pcs.)

Cover for prog. socket
p/n 7092185x

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HI compl

Instrument complete & programming cable

Programming cable CS45 (5 pol)
P/n 10020501, red (R)
P/n 10020502, blue (L)

HI complete

Instrument complete & programming cable

Programming cable CS45 (5 pol)
P/n 10020501, red (R)
P/n 10020502, blue (L)