
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)
Output SPL (dB)
Input SPL 60dB
130 0dB=20µPa 1600 2500
120
110
100
90
80
100 200 500 1000 2000 5000 10000
Frequency (Hz)
Output SPL (dB)
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)
Acoustic Gain (dB)
120 0dB=20µPa 1600 2500
110
100
90
80
70
100 200 500 1000 2000 5000 10000
Frequency (Hz)
Output SPL (dB)
Input SPL 60dB
140 0dB=20µPa 1600 2500
130
120
110
100
90
100 200 500 1000 2000 5000 10000
Frequency (Hz)
Output SPL (dB)
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)
Acoustic Gain (dB)
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
OSPL90 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 Distor
tion
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