Operation Manual MA 27 / MA 27e
8104818 Rev.2.0
10
04/16
5 Function of Buttons and Display
5.1 Power On and Power Off
NOTE: Power on is only possible if headphones are plugged-in!
Power On: To turn on the audiometer press the
“Tone Switch”
button.
Power Off: To power off the audiometer press and hold the
“Hearing Level” dialer and “Frequency” dialer for a few seconds
or unplug the device.
5.2 Pure Tone Presentation
Frequency: Turn the
“Frequency Hz” dialer to select another
frequency.
Level: Rotate the
“Hearing Level dB” dialer to increase or
decrease the level.
Present tone: Press the
“Tone Switch.”
