Figure 7-8: Focusing The Illuminator - SR Research EyeLink 1000 Installation Manual

toward the interior of the Mounting Bar. The Camera Head may need to be
reattached to the Camera Head bracket at a different vertical orientation to ensure
the cabling emerges toward the interior, thereby protecting it from getting bumped.
Vertical orientation can be easily changed by removing the Camera Head from its
bracket and simply reattaching it to the bracket upside-down, before tightening it to
the Camera Head clip.
For binocular recording, the Camera Head bracket needs to be tightened to the
Camera Head clip at a 45 degree angle. To angle the Camera Head, undo the
thumbscrew of the Camera Head Clip and align the holes on the Camera Head
Bracket with the guide pins on the bracket (see Section 7.3 for detailed steps).
2) Determine which lens is most appropriate. Based on the eye-to-camera distance, use
the Lens Guide (Table 2) to determine the most appropriate lens. Screw the small
end of the lens into the threaded Camera Head.
3) Check the Camera Head and Illuminator Separation. The further away the mount is
from the eye, the greater the ideal separation of the camera and illuminator. On the
top of the mount are numerically marked distance scales that indicate the
appropriate locations on the Mounting Bar for the inner edges of the Camera Head
and Illuminator, based on different eye-to-camera distances measured in cm.
Loosen the knobs holding the Camera Head and Illuminator Clips to the Mounting
Bar, adjust the clip positions so the inner edges align with the appropriate distance
and then tighten the knobs.
4) Focus the Illuminator. The illuminator has a lens on it that will focus the infrared
light at different distances. Without removing the black thumbscrews (circled in
Figure 7-8 left) on the underside of the illuminator – loosen them so that the
illuminator cover will slide back and forth to reveal an illuminator distance scale.
Sliding the cover forward will reveal markings on the scale from 60 cm at the closest
eye-to-camera distance to 150 cm at the furthest (see sticker in Figure 7-8 right).
Adjust the cover so that its edge aligns with the marking that approximates your
eye-to-camera distance and then tighten the black thumbscrews.

Figure 7-8: Focusing the Illuminator

Long Range Mount Installation
2005-2010 SR Research Ltd.
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