14
Installation and System Cabling
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2005-2010 SR Research Ltd.
back of the Host PC as indicated by the label “EyeLink Button Box”. Use an optional USB
extender cable if the game pad needs to have a cord longer than one meter.
NOTE:
If you have a USB Button Box, it must be directly connected to a
USB port on the Host PC and cannot be connected through a USB hub.
Use of an Optional Parallel Port Expansion Card.
The EyeLink Host PC can be used with
an optional Parallel Port Expansion Card from SR Research. While the default configuration
expects the VPixx Button Box or Modified gravis Destroyer Gamepad to be plugged into the
motherboard’s parallel port, it is possible to use these with the expansion card by copying and
renaming the {EYELINK Drive}:\ELCL\EXE\BUTTONS.EXP file as {EYELINK
Drive}:\ELCL\EXE\BUTTONS.INI – which configures the expansion port as the default.
BNC Connector Label
Eye Data
Line
0
Monocular: X
DAC0
Binocular: Left X
1
Monocular: Y
DAC1
Binocular: Left Y
2
Monocular: Pupil Size
DAC2
Binocular: Left Pupil Size
3
Monocular: -
DAC3
Binocular: Right X
4
Monocular: -
DAC4
Binocular: Right Y
5
Monocular: -
DAC5
Binocular: Right Pupil Size
STST
Strobe Line
STST
Table 1: Analog Card BNC Connector Information
2.4.5 Analog Card Installation
If an optional Data Translation analog card was purchased with your system it will require
additional cabling steps.
2.4.5.1
Analog Card Pre-installation Checklist
If an analog card option was purchased, you should also have:
1. Full length PCI Analog card (already seated in the Host PC if your system comes
preconfigured).
2. Analog breakout board with BNC connectors.
