System Care; Periodic Inspection - SR Research EyeLink Portable Duo User Manual

5 System Care

WARNING: If the USB cable outer jacket is damaged, a shock hazard to the
participant may exist. Remove the unit from service immediately if such damage
is found.
WARNING: The EyeLink Portable Duo is always powered while the Host PC is
connected and powered on. Therefore observe these precautions for participant
safety:
• Before performing any cleaning other than wiping the optical window,
power off the Host PC or disconnect both plugs of the USB cable of the EyeLink
Portable Duo (see sections 5.2 and 6.1).
• Do not cover or place any items on top of the EyeLink Portable Duo
while the Host PC is powered on, unless the eye tracker cable is disconnected
from both USB ports. Operating the unit while covered could cause it to
overheat and possibly cause a burn hazard.
• If the EyeLink Portable Duo fails to operate properly, is running at a
higher than normal temperature, or fails the cable or illuminator inspection,
disconnect the USB cable or turn off the Host PC, until the operator can
troubleshoot the system.
To ensure performance and safety, inspection and cleaning need to be
performed regularly. Refer to section 5.1 for daily and weekly maintenance and
inspection.
Cleaning and disinfection is covered in section 5.2. Do not perform any
inspection (except checking or dusting of the optical window with a dry anti-
dust cleaning cloth) with the participant present or seated. It is important to
keep the optical window clean for proper operation.

5.1 Periodic Inspection

The following tasks should be performed by the operator or service personnel at
least weekly while the system is in regular use, or before use after an extended
period of disuse.
Inspection should not be performed in the presence of a participant, except for
examining the optical window for dust or smudges.
1) Optical Window (Daily, or if tracking issues are observed):
Check the optical window for scratches, fingerprints, or clouding.
•
This is best performed by looking at the window in a lit room, and
•
observing the reflection of a black object in the window (example: black
paper)
Dust or smudges will appear as bright spots or smears in the dark
•
reflection.
The most critical area is the left third of the window, which covers the
•
camera lens. Dust or smudges here may degrade eye tracking.
100 System Care
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