i. If impedances reach 12 kOhms at any time during the screening, the ALGO 3i
screener will pause screening and display the “Impedances Too High” message.
The problem site will be indicated. (See Chapter IX. Troubleshooting)
ii. If a sensor falls off, or if the sensor clip becomes disconnected from the sensor, the
ALGO 3i screener will pause screening and display the “Impedances Too High”
message. The impedance monitor will display >99kOhms at the problem site.
iii. Screening cannot be initiated or resumed until the impedance level at each sensor is
below 12 kOhms. Correct the site(s) with the high (12 kOhms or greater)
impedances and click OK to resume screening.
Step 7: Monitor Screening in Progress
A. Monitor the Screening in Progress window.
The Screening in Progress window displays the following information:
i. Infant data This recalls data entered by the user in the Infant Data window.
ii. Elapsed screening time This displays the total screening time, not including
pauses.
iii. Sweep Counts This displays the sweep counts for both ears. The sweep counts
are not displayed once the screen is complete. The sweep counts will be replaced
by a PASS/REFER result.
iv. Current Date and Time of screening
v. Impedance monitor This is updated every 20 seconds. Impedance is a measure
of the electrical resistance of the skin. Lower impedances result in faster test time
and fewer false refers.
vi. Screening Progress bar This indicates ear-specific, relative progress toward a
PASS. When the bar is completely filled in, the ALGO 3i screener has reached the
required statistical confidence level to issue a PASS result, and screening will stop
for that ear.
vii. Screening Result PASS or REFER will appear at the end of each progress bar
once the ALGO 3i screener has completed screening for that ear.
viii. Ambient and Myogenic noise bars These indicate relative levels of ambient and
myogenic noise, updated twice per second. Colored bars provide a visual indicator
that excessive noise levels may cause longer screening times. Myogenic noise is
muscular activity of the baby or environmental electrical interference. Ambient
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