2: HCGSN
30
Geodesic Sensor Net Technical Manual
S-MAN-200-GSNR-001 • January 31, 2007
The 32-channel HCGSN in the GES 120 and 140 is designed for the Neurotravel
amplifier; it cannot interface with the Net Amps 200 amplifier used in the GES 200 or
250 or with the Net Amps 300 amplifier used in the GES 300.
Application and care of the HCGSN are similar to those of the GSN 200. Before
applying the Net, please read Chapter 7, "Rinsing and Disinfecting,” to learn how to
disinfect and dry the GSN after each use. Step-by-step instructions on how to apply
the Net are given in Chapter 6, "Applying the GSN.”
Figure 2-2 shows the parts of the HCGSN. Each sensor is wired to an individual pin
on the Hypertronics connector.
The HCGSN features ear and eye electrode bands on both sides of the face to evenly
adjust the position and tension of the electrodes near the ears and eyes. It also
includes a wire wrap to keep the wires from tangling (similar in function to the
sliding wire guide of the GSN 200). In addition, HCGSNs with more than 32 channels
feature a Y clip that is secured onto the subject’s collar to relieve the strain of the wires
on the Net structure.
Figure 2-2. HCGSN (128-channel model)
Hypertronics
connector
Sensor
array
Cord lock for chin strap
Wire wrap
Y clip
Ear electrode strap
(large bead)
Eye electrode strap
(small bead)
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