Replace The Hood Without Crimping The Wires - Geodesic Sensor Net Technical Manual

9: Replacing GSN Parts
Perimeter Locations
Perimeter locations for the 128-channel GSN 200 are sensor numbers 1, 8, 14, 17, 22,
26, 33, 39, 44, 49, 114, 120, 121, 125–128, and common. Use electrodes labeled
"perimeter" on any of these locations.
Proceed as for a standard electrode, but do not pull on the electrode wire to
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insert the assembly into the sensor housing. Rather, twist or push electrode up
from the bottom, holding the cap on top of the pedestal in place, and push the
electrode fully into place by gently pressing up with a thumbnail. Trim the
sponge to 0.5 cm. and proceed normally.
When changing electrodes 44 and 120, go very slowly so you will not dislodge
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the cap. Ease the contact through the hole. Pull back the chin strap elastic to
provide more room, if necessary.
Reassemble the Equipment
Hold the connector in one hand, allowing the Net to hang downward. With the
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other hand gather the wires together about 1–2 cm. below the connector post.
Place the original clear plastic tubing around the gathered area and bind with
electrical tape. Place the bundle in the strain relief opening.
Slide the strain relief retainer into place and tighten down firmly with the two
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long screws. Replace the hood, making sure that all the wires are inside the
hood and that you do not crimp any of the wires between the hood and the
cage (Figure 9-14). Replace the handle.
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Figure 9-14. Replace the hood without crimping the wires
Geodesic Sensor Net Technical Manual
S-MAN-200-GSNR-001 • January 31, 2007