appendix C
131
Geodesic Sensor Net Technical Manual
S-MAN-200-GSNR-001 • January 31, 2007
APPENDIX C
GSN PINOUTS
Electrical connections between system components are achieved with cables and
connectors. This appendix is a technical reference containing the pinouts for the
system connectors.
Terminology
When one connector is plugged into another, the metal parts that establish electrical
continuity between the connectors are called contacts. A connector that has only male
contacts is called a plug; one with only female contacts is a
socket
or receptacle. Strictly
speaking, a pin is a male contact, but for ease of communication the term pinout is used
to denote a scheme for naming the contacts of a connector, whether it is a plug or a
receptacle.
Abbreviations
• GND = earth ground
• COM = isolated common
• REF = reference
• AMP = amplifier
• GSN = Geodesic Sensor Net
Note: The 32-channel HCGSN for the GES 120 and 140 contains no separate reference
sensor because it is designed to interface with the Neurotravel amplifier. In this Net model,
the average signal on channels 1 and 2 (also known as Fp1 and Fp2) form the reference.
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