Memory selection (using selector switch)
If sounds are hard to hear depending
on the environment, such as in a noisy
or quiet environment, change the set-
ting of the memory selector to find the
position that yields best results.
* The memory selector switch (M2/M)
is programmed to match your hearing
pattern. Operate the switch to find the
position that yields best results in a
given situation.
Switch operation sound
Memory 1
Memory 2
M2 M: one short beep
M M2: two short beeps
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 "M2" position, acoustic feedback
(high-pitched sounds) may occur.
Recycled papers are used for this manual.
No. 51290 06-11
2. Be sure to set the switch to "O"
and take out the battery, when
not using the hearing aid.
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 "M2" 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
O - M2 - M switch:
"O"
Volume control (1 to 4): "1"
120
0dB=20µPa
1600 2500
110
100
90
80
70
100
200
500
1000
2000
5000
10000
Frequency (Hz)
O
ut
pu
tS
P
L
(d
B
)
Input SPL 60dB
130
0dB=20µPa
1600 2500
120
110
100
90
80
100
200
500
1000
2000
5000
10000
Frequency (Hz)
O
ut
pu
tS
P
L
(d
B
)
Input SPL 90dB
0 dB
-20 dB
70
1600 2500
60
50
40
30
20
100
200
500
1000
2000
5000
10000
Input SPL 50dB
(0dB=20µPa)
Frequency (Hz)
A
co
us
tic
G
ai
n
(d
B
)
120
0dB=20µPa
1600 2500
110
100
90
80
70
100
200
500
1000
2000
5000
10000
Frequency (Hz)
O
ut
pu
tS
P
L
(d
B
)
Input SPL 60dB
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 90dB
0 dB
-20 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 2 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
Memory 2
(switch position "M2")
Memory 1
(switch position "M")
(off)
(on)
O M 2 M
(off) (on)
O M 2 M
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
125 dB (1100 Hz)
HFA-OSPL90
121 dB
HFA-full-on Acoustic Gain 54 dB
Reference Test Gain
44 dB
Frequency Range
100 Hz to 6500 Hz
Equivalent Input Noise Level
24 dB
Total Harmonic Distortion
500 Hz: 7% 800 Hz: 7%
1600 Hz: 5%
AGC
Input AGC / OPC (Output AGC)
Attack /
Recovery
Time
Input AGC
Single Mode
Attack:
3 msec
Recovery: 120 msec
Double Mode
Attack:
3 msec or 100 msec
Recovery: 100 msec or 2 sec
Triple Mode
Attack:
3 msec or 400 msec
Recovery: 100 msec or 600 msec or 15 sec
Output AGC
Attack:
3 msec
Recovery: 50 msec
Operating Switch
O-M2-M
Output Limiting Control
OPC (range: 20 dB)
Gain Control
Main VR (range: 23 dB)
GAIN (range: 19 dB)
Battery Type/Supply Voltage 13/1.3 V
Battery Current
0.98 mA
Battery Life
Approx. 270 hours
Dimensions/Weight
3.80 × 1.34 × 0.88 cm /
3.6 g (excluding battery)
(Typical value with E1 hook)
TECHNICAL DATA
(
)
Reference Test Frequency
1600 Hz
OSPL90
126 dB
500 Hz
124 dB
Peak
131 dB
Full-on Acoustic Gain
58 dB
Equivalent Input Noise Level
32 dB
Total Harmonic Distortion
500 Hz: 7% 800 Hz: 7%
1600 Hz: 5%
AGC
Input AGC / OPC (Output AGC)
Attack /
Recovery
Time
Input AGC
Single Mode
Attack:
3 msec
Recovery: 120 msec
Double Mode
Attack:
3 msec or 100 msec
Recovery: 100 msec or 2 sec
Triple Mode
Attack:
3 msec or 400 msec
Recovery: 100 msec or 600 msec or 15 sec
Output AGC
Attack:
3 msec
Recovery: 50 msec
Operating Switch
O-M2-M
Output Limiting Control
OPC (range: 20 dB)
Gain Control
Main VR (range: 23 dB)
GAIN (range: 19 dB)
Battery Type/Supply Voltage
PR48/1.3 V
Battery Current
0.9 mA
Battery Life
Approx. 290 hours
Dimensions/Weight
3.80 × 1.34 × 0.88 cm /
3.6 g (excluding battery)
(Typical value with E1 hook)
According to IEC standard Pub. 60118-0-1983
Amendment 1-1994
