SM010-3 Siemens SD 270 Operating & Service Manual Page 11
3.6 Audiometer controls
3.6.1
SoftKeys
Four softkeys are provided below the display that may refer to an
associated option shown on the display. In this operating manual these
are referenced as Softkey 1 to Softkey 4 from left to right.
3.6.2
OPTIONS key
Pressing the OPTIONS key and then using the softkeys allows the
operator to step through the options (use the NEXT softkey) and modify
the settings as required. Pressing the softkey below QUIT exits the
options menu and saves the settings.
Menu Option
Description
Clear test?:
Clears all displayed test results if the YES key is pressed;
stored test results are not affected
Save audiogram to 1:
Use the UP key to select the intended storage
location and press SAVE key to save test results
Load audiogram no. 1:
Use the UP key to select the required storage
location and press LOAD key to retrieve test results
Contrast:
Adjust using the UP and DOWN keys
Bone masking:
Selects the headset or the optional masking earpiece as
the means of masking; select ‘Insert’ or ‘Phones’ key
Select phones:
This option is only available if a secondary headphone is
enabled; use Softkeys 1 or 2 to select the required headphone
type
FF equiv. speech?:
This option is only available if either DD45 or TDH39
is the selected headphone; if activated, free-field equivalent levels
will output to the headphone in speech mode (see Appendix 1)
Store on 2 of 3?:
automatically stores a threshold if the responses made
to two out of three test signals are at the same hearing level
Set freefield level?:
This option provides access to the freefield
calibration function; refer to Appendix 2 for details
External talkover?:
Select NO to use the internal microphone and YES to
use the MIC 1 input
Display Counter?:
Activates a percentage counter for use with speech
testing (refer to Appendix 1)
Omit 750/1k5/3k/6k:
To exclude these frequencies from those available
for testing press the YES key