a. Frequency, in Hz, selected for Channel 1 or Channel 2.
b. The indicator bar for the subject response displays when the handswitch is pressed.
c. The saved dB HL (and effective masking level) for the intersected frequency and
Hearing Level.
d. Current output in dB HL for Channel 1 and Channel 2; also the stimulus, transducer
and routing currently selected for each channel. If the Interrupt is on, this is also
displayed in this area. The tone ON icon is displayed when the presentation is made.
e. The general system state, including signal format, dB step size, special tests, monitor
speaker, High Frequency (optional), Remote (optional) with data transfer, and print
(optional).
f. The graphic representation of the audiogram. The display is designed so that the
patient’s right ear audiogram will be on the operator’s left portion of the display. The
left ear is on the right side of the display. In the above figure, the x axis is labeled
Left Ear or Right Ear Frequency (Hz) and is marked at the octave intervals of: 125
Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz and 8 kHz. The dashed grid lines are
displayed at the one-half octave intervals of: 750 Hz, 1.5 kHz, 3 kHz, 6 kHz, and 12
kHz. The y axis is Hearing Level in dB HL. This ordinate is incremented every 10
dB, starting at -10 dB and ending at 120 dB.
g. When a result is saved, the appropriate audiometric symbol is located on the audiogram.
No Response symbols are placed on the audiogram at the maximum output limit for
the transducer and frequency combination.
h. Error message/status message. Refer to Chapter 6 for a description of the error and
status messages. These boxes appear only when a message is displayed.
2-15
Chapter 2 - Installation
The following figure is a representation of the standard audiogram.
d
h
h
andard Audiogram
f / g
c
b
a
12345678901234
12345678901234
{
}
h
e
1761-0100 Rev. B
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