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Auto Threshold:
In addition to traditional manual testing, the AS608e incorporates a Hughson Westlake patient controlled
automatic threshold test complying with ISO 8253. When the test is completed the results are easily
recalled from the internal memory of the AS608e and transferred to the Diagnostic Suite PC software and
stored in OtoAccess® or Noah.
Hughson Westlake is an automatic pure tone test procedure. Threshold is defined as 2 out of 3 (or 3 out
of 5) correct responses at a certain level in a 5 dB increase and 10 dB decrease test procedure. The
Hughson Westlake is used to obtain pure tone thresholds automatically.
Talk Forward
The Talk Forward function makes the AS608e easy to work with particularly in sound booth installations.
Power Up and Power Off
To turn on the audiometer press the Tone Switch (3) button. To power off the audiometer hold down the
two rotary wheel buttons, 1) and 2), simultaneously for a few seconds. The audiometer will also
automatically power off after 1, 2, 3, 4 or 5 minutes depending on the settings (see next section).
Pure Tone Presenation
1) Select desired frequency with the "Frequency" button
2) Select desired intensity with the HL dB.
3) Present tone by touching Tone Switch. An indication will be on Display (see below).
F1) On AS608: Select the Right ear. On AS608e: Toggle between Right and Left.
F2) On AS608: Select the Left ear. On As608e: Store threshold.
F3) Manual or Pulse:
Manual: Manual Tone presentation as long as the Tone Switch is activated.
Pulse: Pulsing Tone will be presented as long as the Tone Switch is activated.
F4) Pure Tone or Warble:
If Tone is selected pure tones will be presented to the subject when the Tone Switch is activated.
If Warble is selected warble tones will be presented to the subject when the Tone Switch is activated.
D-0127810-A – 2020/05
AS608 - Instructions for Use - US
Page 14
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