19
D-0126050 rev 1 -
270+ Operating Manual
4.6.
FUNCTION BUTTONS
4.6.1.
PRESENTING A TONE
The presentation button is located to the right of the Channel 1 rotary
control. The button is conductive, by touching it the test signal will be
presented to the patient (presentation mode) or interrupted (continuous
mode).
4.6.2.
STORING A TEST POINT
The store button is located to the left of the Channel 2 rotary control. The
button is conductive, by touching it the current test level and frequency will
be stored to the temporary memory of the device.
4.6.3.
TALKOVER AND TALKBACK
Pressing both frequency buttons at the same time, will bring you to the
talkover and talkback screen.
For talkover (you use this to talk to the patient), the internal or an external
headset can be used.
Please note:
It is not possible to use both an external and an internal
microphone at the same time. The used microphone needs to be defined
via the settings. Select
MENU
and
CONFIG.
to choose if the external
microphone shall be used instead of the built-in microphone.
When pressing both frequency buttons, the screen will show the talkover and talkback screen. Talkover is
active as soon as the buttons are both pressed. The level of talkover can be controlled with the Channel 1rotary
control.
When starting up the unit, talkback is switched off and needs to be activated manually every time the device
is started up. Use
F4
to activate talkback. The function will now be enabled during the entire operation of the
device. Use the Channel 2 rotary control to control the talkback level in your monitor headset.
Summary of Contents for 270+
Page 1: ...270 Operating Manual...
