Geodesic Sensor Net - Before Replacing a Sensor

11: Troubleshooting
113
Geodesic Sensor Net Technical Manual S-MAN-200-GSNR-001 • January 31, 2007
Before Replacing a Sensor
Before you rush to replace a sensor, consider the possibility that the real problem
might be with the single reference sensor or the single common sensor of the GSN.
If you experience multiple and inconsistent sensor problems with a Net, the problem
might be due to faulty reference and/or common sensors.
Try replacing both of these before replacing large numbers of other sensors.
Miscellaneous
GSN 200 Lead Tangles
To prevent or remedy tangled GSN 200 leads,
subscribe to the following protocol.
• When removing the GSN 200 from the
subject, peel back the Net and allow it to
turn inside out, then allow sensors to drop
flat. This prevents tangling.
• Do not allow the connector or sensor array to pass through the lead bundle
during handling or storage of the GSN 200.
• Immediately solve any tangles. Do not let problems accumulate.
• Use a wire with the previous number or the following number as a guide
during electrode replacement in the GSN 200.
• Use the sliding wire guide (see Figure 3-2 on page 40) properly. Slide the guide
toward the sensor end of the Net any time the GSN 200 is
not being applied to a
subject. When applying the GSN 200 to a subject, slide the wire guide toward
the connector end of the Net.