OM024-6 Model 240 Operating Manual Page 9
+20dB This enables tone levels to be presented with up to 20dB
higher output; press the key and then use SIGNAL to
access the extra 20dB; an indicator above the key
illuminates green to show that the function is active, and
an additional display message indicates levels greater
than 100dBHL
BONE Outputs the signal to the bone vibrator; the indicator
above the key illuminates green
AUTO Press and release this key while holding the MENU key to
initiate an automatic test; to cancel the test press the
RESET key
TALK OVER Hold this key to interrupt the test and route the operator’s
voice from the front panel microphone to the headset; the
level is adjusted with the SIGNAL keys; if an
automatic test is in progress the current test frequency will
be retested from the default level
LEFT Press once to select the left ear; the indicator above the
key illuminates green; if the left ear is already selected
press again to store the displayed signal value as a
threshold (see Section 3.5.1)
RIGHT Press once to select the right ear; the indicator above the
key illuminates green; if the right ear is already selected
press again to store the displayed signal value as a
threshold (see Section 3.5.1)
SIGNAL Press the keys to decrease or increase the level of
the tone presented in 5dB steps; to scroll through the
range keep the key pressed
FREQUENCY Press the key to select a lower frequency and the
key to select a higher frequency
MASKING With the MASK function on, press the MASKING
keys to decrease or increase the masking level in 5dB
steps; to scroll through the range keep the key pressed
PRESENT Press to present the displayed test signal to the patient.
The “PRESENT” indicator above the display will illuminate
green during presentation
To Next Page
Loading...
