24
D-0126050 rev 1 -
270+ Operating Manual
4.7.
MENU
4.7.1.
GENERAL
The
MENU
contains the system settings as well as the data processing options.
•
The
CONFIGURATION
(
F1
) submenu contains general instrument and test settings regarding the
audiometric tests.
•
AUTO
contains all settings related to auto-test (
F2
)
•
Data can be saved and re-loaded for review, to be printed or sent to the PC software (
F3
)
•
The current reviewed measurement can be printed (
F4
)
Within each setting, using the softkey
F3
(
NEXT
) or the Channel 1 rotary control allows the operator to step
through the options and modify the settings as required. Pressing the softkey
F4
(
SAVE
) exits the option menu
and saves the settings.
4.7.2.
CONFIGURATION
In
CONFIGURATION
the instrument settings can be modified. Use
F1
and
F2
to change the current selected
setting and use
F3
(
NEXT
) to move on to the next setting. Select
SAVE
(
F4
) or the
MENU
button again to
leave the menu with the latest changes stored.
ITEM
DESCRIPTION
DEFAULT
Present Time:
Select the time that a stimulus can sound when the PRESENT key
is pressed; either continuously while the present button is pressed
or for 1.0-2.0 sec.
1.0-2.0 sec
FF Speech Units:
The units displayed for freefield speech can be shown in dBHL and
dBSPL.
dBHL
High Gain Line:
When yes is selected, the line-in signal will be amplified. It is
important to note that distortion can happen, when amplifying the
test signal more than necessary.
No
Bone Masking:
Selects the headset (Phones) or the optional insert masking
earpiece (Insert) as the means of masking.
Phones
Select Output:
In the case that several transducers are available (e.g. DD45 and
IP30), select the headset required.
DD45
Headphone eq. FF:
This option is only available if DD45 is the selected headset; if
activated, free-field equivalent levels will output to the headset in
speech mode.
Yes
Set Freefield Level:
This option provides access to the freefield calibration function;
refer to Appendix 2 for details.
No
Step Size:
Enables the operator to set either 1, 2 dB or 5dB as the default step
size.
5dB
Summary of Contents for 270+
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