AutoStart Probe Check
After the test ear is selected, the AutoStart Probe Check will begin
automatically. The Probe Check display shows a cone, larger at the
left and tapering toward the right, representing the ear canal volume
from very large (blue area) to very small (orange area).
The vertical white bar indicates the measured ear canal volume and
probe fit stability:
Blue (Display 4) = The ear canal volume is too large for the
test to begin. The probe is not in the ear or there is a large
leak.
Gray (Display 5) = Ear seal indicator will remain gray until
a seal is obtained.
Green (Display 56) = The ear canal volume is in the target
range for testing. The test will begin automatically if the
probe fit is stable.
Orange (Display
7
) = The ear canal volume is too small for
the test begin. The eartip may be pressed against the ear
canal wall or the probe tube may be completely clogged.
Appropriate adjustments of the eartip position and size selection
should be made until the white indicator falls within the green area
and remains stable.
If the test will not progress past the Probe Check phase, change the
probe tube, check that the probe connector is fully seated in the
socket, and try again.
NOTE:
To test children with PE tubes, the Probe Check needs to be
disabled. This is accomplished by first inserting the probe with
appropriate ear tip into the ear canal and obtaining a proper seal. To
disable AutoStart at the main menu select the ear to be tested by
holding down the RIGHT or LEFT arrow keys for 3 seconds until the
green “ready” light turns off. Once the key is released, the Corti will
calibrate and test as before. The appropriate in-the-ear stimulus
intensity levels are applied to ears with PE tubes.
Test Phase
The Corti instrument will automatically perform a calibration at the
start of each test. During calibration a series of tones will be
presented to the ear canal to calibrate the levels of the frequencies to
be tested. Following calibration of the test tones, the test phase will
begin automatically.
The display on the Corti test instrument will indicate the results of the
test with a graphic display. The display will be generated and shown
during the test and can be reviewed after the test is complete.
The Corti allows the user to select from two options for viewing the
results. The SNR graph view shows the signal-to-ratio for each DP
Display 7
Display 4
Display 5
Display 5
Display 6
