Installation and System Cabling
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2005-2010 SR Research Ltd.
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3. Cable to connect the analog PCI card to the breakout board.
2.4.5.2
Analog Card Wiring
The analog card allows position information and pupil size to be output as analog voltages. The
card connects to a breakout board using a thick cable, and the breakout board in turn has a
number of BNC connectors attached to it. Each BNC connector has a label. See Table 1 for
details of the information carried on each line.
To reduce noise it is recommended that the breakout board be encased in an RF shielded and
insulated box.
For detailed information regarding configuration and use of the analog card please see
Appendix A of the EyeLink 1000 User Manual.
2.4.6 Camera Lens Selection
The EyeLink 1000 Mounts come with a number of different lenses to be used for unique eye
tracking situations. Table 2 lists recommended lenses for a range of eye-to-camera distances as
a function of the type of mount being used.
In all cases, eye-to-camera distance is listed in cm and measured from the surface that the lens
screws into (on the Standard Camera or the Fiber Optic Camera Head) to the bridge of the
participant’s nose.
Lens
Aperture Size
Tower/
Primate
Mount
Desktop Mount or LCD Arm
Mount
Desktop Mount
Long Range Mount
Monocular
with Head
Support
Remote Mode
Binocular
Monocular/Binocular
16 mm
(Short Handle or Small Wheel)
-
-
50-70 cm
-
-
25 mm
(Long Handle or Large Wheel)
IDEAL
-
-
50-60 cm
-
35 mm
-
50-70 cm
-
60-70 cm
60-70 cm
50 mm
-
-
-
-
70-100 cm
75 mm
-
-
-
-
100-150 cm
Table 2. Lens Guide for Different Viewing Distances
Continue on to the section pertaining to the mounting option that you
are installing:
Tower Mount –
3 “Tower Mount Installation”
Desktop Mount –
4 “Desktop Mount Installation”
LCD Arm Mount –
5 “LCD Arm Mount Installation”
Primate Mount –
6 “Primate Mount Installation”
Long Range Mount – 7 “Long Range Mount Installation”
