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Thymatron
®
System IV Instructions for Use
50
MID FREQ
Median EEG frequency
% DELTA
Relative EEG power in the delta bandwidth
When EEG FREQ is enabled with one of these options, baseline EEG collection has been obtained and the
“READY” message appears, the values are continuously displayed in the 8-character L.E.D. After several
seconds, the “READY” is replaced with the letter “R” to the right of the EEG values being displayed.
PRINTER PAPER SPEED SELECTION
The Thymatron® System IV is shipped with the paper speed set to 25 mm/sec. Alternate paper speeds of 10
mm/sec and 50 mm/sec may be selected
or the printing turned off entirely,
as follows.
FLEXDIAL™ PRINTOUT: PRINT 10, PRINT 25, PRINT 50
TURN OFF PRINTING ENTIRELY
FLEXDIAL™ PRINTOUT: PRINTOFF
POWER SPECTRAL ANALYSIS (FFT) SELECTION
After the paper speed has been selected by
rotating
and then
pressing
the
FlexDial™,
the FFT option (“ON” or
“OFF”) flash-displays. FFT (“Fast Fourier Transform”) is an algorithm for extracting frequency information
from the EEG signal to perform a
Power Spectral Analysis
that displays the EEG frequencies in various
bandwidths for advanced clinical or research purposes. The Thymatron® System IV is shipped with the FFT
printout disabled; to enable this feature:
FLEXDIAL™ PRINTOUT: FFT ON, FFT OFF
USER SPECIFIED FLEXDIAL™ SELECTIONS
This feature allows the user to save and then recall up to 8 user-specified
FlexDial™
selections in the
Thymatron® System IV memory. Individual doctors’ preferred range of
FlexDial™
settings can be saved as
“USER” selections, or specific
FlexDial™
settings within a factory program can be saved, (e.g., turn channel 4
“OFF” and “UPLOAD” automatically.) Once the different user-specified selections have been made and locked
in by
pressing
the IMPEDANCE TEST button or the START/STOP button, they may be saved as a USER
selection as follows:
FLEXDIAL™ SAVE USR : SAVE US1-SAVE US8
After they have been saved, these user-specified selections can be recalled using the “SETTING” function of the
FlexDial™
shell by selecting from the options “SET US1” through “SET US8”.
Be sure to remember or write
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