test frequency or TE test band. The Value graph view shows the
absolute emission and noise levels for each DP test frequency or TE
test band.
SNR Bar Graph View
Display
8
shows the SNR bar graph view. These are the signal-to-
noise ratio (SNR) test results which are displayed as the emissions
and noise floor are measured. Each column represents one DP test
frequency or TE frequency band. The height of each column
represents the SNR measured.
When a protocol with a Pass criteria has been selected, the user will
see a horizontal green line at the decibel level corresponding to the
SNR required for a PASS. Green bars are a pass, yellow a non-Pass.
Value Graph View
Display
9
shows the Value graph view for left ear test. Dark blue “x”
symbols represent the absolute emission levels at each DP test
frequency or TE frequency band. Light blue upside-down triangles
represent the noise floor at each DP test frequency or TE frequency
band.
Display 10 shows the Value graph view for a right ear test. Red circle
symbols represent the absolute emission levels at each DP test
frequency or TE frequency band. The shaded area is the Expanded
Boys Town Norms template. See page 23 for a description of the
template.
Refer to pages 33 and 34 for instructions to switch the default setting
of the graphs and for turning on the normative template.
NOTE:
The
up arrow key can be used to abort a test in progress.
No record of an aborted test will be saved in memory.
Viewing Results
When testing is complete, the green “READY” light is illuminated
and a display similar to Display 11 or Display
2
will appear. The
results of the test are automatically saved in memory as soon as the
test is complete. The results will be saved even if the instrument is
turned off or the battery is temporarily depleted. This screen indicates
the test ear and further gives the results of the test.
“PASS” on the screen indicates the patient passed screening
“REFER” indicates the patient did not pass screening
“NOISY” indicates excessive noise was present during the test
“NO SEAL” indicates a seal was not maintained throughout the
test
“FIT ERR” indicates inadequate probe placement in the ear canal
to produce target stimulus intensities
Display 8
Display 11
Display 12
Display 9
Display 10
