Chapter 2
Sensitivity ranges The following admittance measurements give maximum range at 226 Hz, Y
in ml.
Table 1: Tymp Mode
Frequency
Digital Read-Out
Graphical
Including Cursor
Display
226 Hz
-7.0 to +7.0
-1.0 to +7.0
Accuracy at 226Hz: 0.1 ml or 5%, whichever is greater.
Table 2:
Reflex Mode
Frequency
Digital Read-Out
Graphical
Including Cursor
Display
226 Hz
-7.0 to +7.0
-0.16 to +0.80
+0.16 to -0.80
Accuracy:
226 Hz is 0.02 ml or 5%,whichever is greater.
Probe signal Sinusoidal signal with the following characteristics:
Frequency:
226 Hz
Frequency accuracy: ±1%
Harmonic distortion:
<2%
(Measured in an HA-1 2cc coupler)
Signal level: 85 dB SPL
(In Real Ear and in Normal Test Mode)
NOTE
The probe tone level is set to be nominally 70 dB HL.
Signal level accuracy: ±1.5 dB SPL
2 - 2 Grason-Stadler
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