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)
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
80
1600 2500
70
60
50
40
30
100
200
500
1000
2000
5000
10000
Input SPL 60dB
(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
)
Intensity of Magnetic Field 31.6mA/m
(off) (on) (on)
O
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 Distortion 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
OSPL
90
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)
O
ut
pu
tS
P
L
(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
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
OSPL90 curve
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
OSPL
90
curve
