User & Service Manual Xltek EMU 128 Headbox
12
Testing the EMU128 Headbox
The EMU128 Headbox hardware is:
•
Fully assembled, tested and calibrated prior to being shipped to you.
•
Designed to work with XLTEK NeuroWorks software.
The following sections describe how to use NeuroWorks with the EMU128 Headbox to
perform a channel test.
Note: A minute electric current is transferred during an impedance check. To protect grid
patients, impedance checks are disabled for the EMU128 Headbox.
EMU128 Headbox Calibration and Verification
There is no need to calibrate the NeuroWorks Software or the EMU128 Headbox. All
calibration is done at the factory before the system is shipped. To verify that the
EMU128 Headbox system is correctly calibrated, perform the following procedure:
1. Connect the EMU128 Headbox to the acquisition station, then connect the
acquisition station to an XLTEK DT computer. Turn on the system.
2. Start XLTEK Database (XLDB).
3. To start a new study, click New.
4. Choose Edit->Settings->Acquisition (tab).
5. In the Acquisition tab, set the Reference Electrode to Common.
6. Design four bipolar montages that take the difference of adjacent channels within
each 32-channel group, for example, C1-C2, C2-C3, C3-C4, C32-C1.
7. Apply a sine wave of 50 microvolts, peak-to-peak amplitude, 10 Hz to all channels of
the group using a signal generator.
8. Set the LFF filter to 0.1, the HFF filter to OFF and the Notch filter to OFF.
9. Apply each montage in turn.
10. Verify that no sine wave is greater than 50 microvolts peak-to-peak. 50 microvolts
represents gain match to 1%.
For more information on setting up a montage, see Creating a Montage in the
NeuroWorks Settings book of the online help. To open the online help, choose
Help->XLTEK NeuroWorks EEG Help.
To Next Page
Loading...
Need help?
General
