No. 37780 03-06
Full-on gain curve
Frequency response curve
and effect of Tone H
OSPL 90 curve and effect of
output limiting control
Full-on acoustic gain
frequency response curve
Basic frequency response
curve and effect of Tone H
OSPL
90
curve and effect of
output limiting control
Note:
(1) Production number (serial
number) is indicated at the
upper rear side of the unit.
(2) M a n u f a c t u r e r ' s n a m e i s
imprinted at the lower rear
side of the unit.
TECHNICAL DATA
(
)
Reference Test Frequency 1600 Hz
OSPL
90
124 dB
500 Hz
123 dB
Peak
129 dB
Full-on Acoustic Gain
54 dB
Equivalent Input Noise Level
27 dB
Total Harmonic Distortion
800 Hz: 9%
1600 Hz: 5%
Operating Switch
O-S-M
Output Limiting Control
MOP (range: 15 dB)
Tone Control
TONE H
Gain Control
Main (range: 42 dB)
Battery Type / Supply Voltage PR48 / 1.3 V
Battery Current
1.25 mA
Battery Life
Approx. 230 hours
Dimensions
3.75 × 1.27 × 0.88 cm
Weight
4.0 g
(excluding battery)
(Typical value)
TECHNICAL DATA
(
According to ANSI standard S3.22 1996
)
Maximum-OSPL90
124 dB (1100 Hz)
HFA-OSPL90
116 dB
HFA-full-on Acoustic Gain
45 dB
Reference Test Gain
36 dB
Frequency Range
200 Hz to 6900 Hz
Equivalent Input Noise Level
29 dB
Total Harmonic Distortion
800 Hz: 7%
1600 Hz: 3%
Operating Switch
O-S-M
Output Limiting Control
MOP (range: 15 dB)
Tone Control
TONE H
Gain Control
Main (range: 42 dB)
Battery Type / Supply Voltage 13 / 1.3 V
Battery Current
1.25 mA
Battery Life
Approx. 230 hours
Dimensions
3.75 × 1.27 × 0.88 cm
Weight
4.0 g
(excluding battery)
(Typical value)
According to IEC standard Pub. 60118-0-1983
Amendment 1-1994
Adjusting the controls
Tone control (Tone H) and Output limiting control (MOP) should
be set at the position of comfortable sound by the screw driver.
l
Tone control (TONE H)
In the factory default condition, this control is
set to the "N" position. Turning the control
from the "N" to the "H" position, low frequen-
cies are attenuated and high frequencies
emphasized.
l
Output limiting control (MOP)
This control prevents the hearing aid from
outputting excessively loud sounds. Turning
the control towards the left reduces the maxi-
mum output level of the hearing aid.
Removing Hearing Aid
1. Set the switch to "O" (power off) before removing the hearing
aid. If the switch is left in the "M" or "S" position, acoustic
feedback (howling) may occur.
2. Be sure to set the switch to "O" and take out the battery,
when not using the hearing aid.
Opening / closing the control cover
1. Insert a screwdriver
into the notch of the
c o n t r o l c o v e r , a s
shown in Fig. 1, and
push the cover down.
(Only the top section of
the cover will open.)
2. When the top of the cover opens, insert the screwdriver into
the clearance, as shown in Fig. 2, and push the cover out to
open it fully.
3. To close the cover, push the entire cover in with finger.
