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Idiomas disponibles
Idiomas disponibles
Classification
Bell Basic. Pure-tone audiometer: Type 4 (IEC 60645-1 / ANSI S3.6)
Bell Plus. Pure-tone audiometer: Type 3 (IEC 60645-1 / ANSI S3.6)
Harp Basic and Plus
Pure-tone audiometer: Type 2 (IEC 60645-1 / ANSI S3.6)
Speech audiometer: Type A or A-E (IEC 60645-1 / ANSI S3.6)
Channels
Two independent channels.
Available signals
Stimulus: pure tone, warble tone.
Masking: NBN, WN (not Bell Basic), SN (only Harp).
Speech audiometry inputs: EXT1, EXT2, MIC, INT (flash memory, only
Harp Plus).
Signals specifications
Attenuator step: 5 dB (Bell); 1 and 5 dB (Harp).
Presentation: Continuous, Pulsed (0.5, 1, 2 Hz).
Warble: 5 Hz sin wave modulating signal
Available outputs and transducers
AC: TDH-39 or DD45 headphones, ER-3 insert earphones
BC: B-71 bone vibrator
Free field (only Harp)
Insert masking earphone: IME-100
Pure tone: available frequencies and maximum levels (dB HL)
Freq.
TDH39
(Hz)
DD45
125
250
500
750
1.000
1.500
2.000
3.000
4.000
6.000
8.000
(*) The values refer to "normal" range; add 10 dB to each value in case of
"extended range" option selected.
AC
AC
ER-3
80
90
100
105
110
110
115
115
120
120
120
120
120
120
120
120
120
110
115
95
100
90
AC
BC
ER-5
90
-
100
45
110
65
120
70
120
75
120
80
115
80
115
75
110
75
100
55
90
50
FF(*)
75
85
95
95
95
95
95
95
95
90
85
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