
O- -M Switch
O: Hearing aid is turned off and no sound is heard.
: Sounds through both the microphone and telephone coil can
be heard. Set to " " 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 , 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 " " 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.
No. 51960 07-06
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 " " 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 - - M switch: "O"
Volume control (1 to 4): "1"
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)
140 0dB=20µPa 1600 2500
130
120
110
100
90
100 200 500 1000 2000 5000 10000
Frequency (Hz)
Output SPL (dB)
Input SPL 60dB
80 1600 2500
70
60
50
40
30
100 200 500 1000 2000 5000 10000
Input SPL 60dB(0dB=20µPa)
Frequency (Hz)
Acoustic Gain (dB)
140 0dB=20µPa 1600 2500
130
120
110
100
90
100 200 500 1000 2000 5000 10000
Frequency (Hz)
Output SPL (dB)
Intensity of Magnetic Field 31.6mA/m
Frequency response curve
Full-on gain curve Full-on acoustic gain
frequency response curve
Note:
(1) Production number (serial 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 134 dB (870 Hz)
HFA-OSPL90 130 dB
HFA-full-on Acoustic
Gain 65 dB
Reference Test Gain 53 dB
Frequency Range 200 Hz to 5000 Hz
Equivalent Input Noise Level
29 dB
Total Harmonic Distor
tion 500 Hz: 1% 800 Hz: 1% 1600 Hz: 1%
HFA-SPLITS (HFA-SPLIV)
108 dB (120 dB at 31.6 mA/m)
AGC
(Attack / Recovery Time)
Input AGC
Attack / Recovery: 8 or 256 msec
Output AGC
Attack / Recovery: 0.25 msec
Battery Type/Supply Voltage
675/1.4 V
Battery Current/Battery Life
2.5 mA/180 hours
Dimensions/Weight 4.67 × 1.62 × 0.97 cm /
6.7 g (excluding battery)
(Typical value)
TECHNICAL DATA ( )
Reference Test Frequency
1600 Hz
OSPL90 136 dB
500 Hz 135 dB
Peak 139 dB
Full-on Acoustic Gain 72 dB
Equivalent Input Noise Level
26 dB
Total Harmonic Distortion
500 Hz: 1% 800 Hz: 1% 1600 Hz: 1%
Induction Coil Sensitivity 112 dB at 1 mA/m
AGC
(Attack / Recovery Time)
Input AGC
Attack / Recovery: 8 or 256 msec
Output AGC
Attack / Recovery: 0.25 msec
Battery Type/Supply Voltage
PR44 (675)/1.4 V
Battery Current/Battery Life
2.5 mA/180 hours
Dimensions/Weight 4.67 × 1.62 × 0.97 cm /
6.7 g (excluding battery)
(Typical value)
According to IEC standard Pub. 60118-0-1983
Amendment 1-1994
SPLITS curve Basic frequency response
curve
Induction Coil Input
frequency response curve
120 0dB=20µPa 1600 2500
110
100
90
80
70
100 200 500 1000 2000 5000 10000
Frequency (Hz)
Output SPL (dB)
140 0dB=20µPa 1600 2500
130
120
110
100
90
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
OSPL90 curve
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
OSPL90 curve