O-
M
T-M Switch
O: Hearing aid is turned off and no sound is heard.
MT: Sounds through both the microphone and telephone coil can
be heard. Set to "MT" position when using your hearing aid
for telephone or induction loop system in combination with
the MT balancer.
When the switch of the hearing aid is set to MT, noise may be
heard in the vicinity of electromagnetic fields, such as generated
for example by electronically secured gates or similar.
M: Microphone for ordinary use. This is the normal operating
position.
Removing Hearing Aid
1. Set the switch to "O" (power off) before re-
moving the hearing aid. If the switch is left in
the "M" or "MT" position, acoustic feedback
(high-pitched sounds) may occur.
2. Be sure to set the switch to "O"
and take out the battery, when
not using the hearing aid.
Recycled papers are used for this manual.
No. 51310 06-12
Turn-on precaution
If you switch the hearing aid off and then immediately on again,
there may be no sound, but this is not a defect. In such a case,
return the switch to "O" (Off), wait for at least 10 seconds, and
then set the switch to "M" or "MT" again.
Adjusting the Controls
This hearing aid is a digital type. Any adjustments must be done
at the dealer. For details, please contact the dealer.
Factory default setting for communication/Audio input selector
The default setting is as shown at right.
FIT: Position for hearing aid fitting adjustment
: Position for Audio input
Other setting
O - MT - M switch:
"O"
Volume control (1 to 4): "1"
140
0dB=20µPa
1600 2500
130
120
110
100
90
100
200
500
1000
2000
5000
10000
Frequency (Hz)
O
ut
pu
tS
P
L
(d
B
)
Input SPL 60dB
150
0dB=20µPa
1600 2500
140
130
120
110
100
100
200
500
1000
2000
5000
10000
Frequency (Hz)
O
ut
pu
tS
P
L
(d
B
)
Input SPL 90dB
0 dB
-19 dB
80
1600 2500
70
60
50
40
30
100
200
500
1000
2000
5000
10000
Input SPL 50dB
(0dB=20µPa)
Frequency (Hz)
A
co
us
tic
G
ai
n
(d
B
)
140
0dB=20µPa
1600 2500
130
120
110
100
90
100
200
500
1000
2000
5000
10000
Frequency (Hz)
O
ut
pu
tS
P
L
(d
B
)
Input SPL 60dB
150
0dB=20µPa
1600 2500
140
130
120
110
100
100
200
500
1000
2000
5000
10000
Frequency (Hz)
O
ut
pu
tS
P
L
(d
B
)
Input SPL 90dB
0 dB
-19 dB
80
1600 2500
70
60
50
40
30
100
200
500
1000
2000
5000
10000
Input SPL 50dB
(0dB=20µPa)
Frequency (Hz)
A
co
us
tic
G
ai
n
(d
B
)
(off) (on) (on)
O M T M
Full-on gain curve
Frequency response curve
OSPL90 curve and effect of
output limiting control
Full-on acoustic gain
frequency response curve
Basic frequency response
curve
OSPL
90
curve and effect
of output limiting control
Note:
(1) Production number (se-
rial number) is indicated at
the upper rear side of the
unit.
(2) Manufacturer's name is
imprinted at the lower rear
side of the unit.
TECHNICAL DATA
(
According to ANSI standard S3.22 2003
)
Maximum-OSPL90
141 dB (850 Hz)
HFA-OSPL90
133 dB
HFA-full-on Acoustic Gain 66 dB
Reference Test Gain
56 dB
Frequency Range
200 Hz to 5000 Hz
Equivalent Input Noise Level
25 dB
Total Harmonic Distortion 500 Hz: 4% 800 Hz:1% 1600 Hz: 2%
HFA-SPLIV
113 dB at 31.6 mA/m
AGC
Input AGC / OPC (Output AGC)
Attack / Recovery Time
Input AGC
Attack / Recovery: 4 or 252 msec
Output AGC
Attack: 0.25 msec
Recovery: 0.25 or 32 msec
Operating Switch
O-MT-M
Output Limiting Control
OPC (range: 19 dB)
Gain Control
Main VR (range: 16 dB)
GAIN (range: 19 dB)
Battery Type/Supply Voltage 675/1.3 V
Battery Current
2.7 mA
Battery Life
Approx. 160 hours
Dimensions/Weight
4.67 × 1.62 × 0.97 cm /
6.7 g (excluding battery)
(Typical value with E0 hook)
TECHNICAL DATA
(
)
Reference Test Frequency 1600 Hz
OSPL
90
138 dB
500 Hz
137 dB
Peak
145 dB
Full-on Acoustic Gain
75 dB
Equivalent Input Noise Level 24 dB
Total Harmonic Distortion 500 Hz: 2% 800 Hz: 1% 1600 Hz: 2%
Induction Coil Sensitivity
105 dB at 1 mA/m
AGC
Input AGC / OPC (Output AGC)
Attack / Recovery Time
Input AGC
Attack / Recovery: 4 or 252 msec
Output AGC
Attack: 0.25 msec
Recovery: 0.25 or 32 msec
Operating Switch
O-MT-M
Output Limiting Control
OPC (range: 19 dB)
Gain Control
Main VR (range: 16 dB)
GAIN (range: 19 dB)
Battery Type/Supply Voltage PR44/1.3 V
Battery Current
2.7 mA
Battery Life
Approx. 160 hours
Dimensions/Weight
4.67 × 1.62 × 0.97 cm /
6.7 g (excluding battery)
(Typical value with E0 hook)
According to IEC standard Pub. 60118-0-1983
Amendment 1-1994