MAGSTIM RAPID2 Operating Manual page 44

Magstim Rapid
2
3576-23-09
Start time for line 1 has to be zero. The start time on the other lines should be detennined using the
following equation, start time= previous line (start time+ duration+ wait time).
Power 0 - 1 CH)' ) -,, at a resolution of 1
' . !-·,1.
Frequency 1 - 100 Hz at a resolution of lHz.
Note the settable power to frequency values is determined by the system configuration, see user manual
for Rapid system for more details.
Duration 0.1 - 10.0 seconds at a resolution of0.l seconds.
Number of pulses 1 - 1000 at a resolution of l.
Wait time 1.0 - 60.0 seconds at a resolution of 0.1 seconds.
Note all time periods are specified in multiples of tenths of a second i.e. if a time period of 6.5 seconds
is required then a value of 65 is entered between the commas.
MEP 0. This line contains the MEP data column headings.
M:EPS x. These lines contain a single reading for each trace stored in the file.
Trace l colmm1 contains the lVIEP wavef<mn that was displayed on the UI for channel 1 when the "save
traces'' button on the single pulse screen on the UI was selected and the exported file was open for
modification. Each of the 300 data values is ,vithin the range 0 - 255.
Trace 2 column contains the MEP waveform that was displayed on the UI for charu1el 2 when the "save
traces" button on the single pulse screen on the UI was selected and the exported file was open for
modification. Each of the 300 data values is within the range 0 - 255.
To detennine the actual voltage recorded for each lVIEP data value, the value has to be scaled according
to the voltage range that was selected at the tin1e the reading was made. The voltage range setting for
each channel is recorded on the "MEP Configuration" data line of the file.
MEP Configuration. This line contains the details of how the MEP was configured ,vhen the MEP
waveforms were saved using "save traces" button on the single pulse screen on the UL The meaning
for each value are as follows:
Time base index, possible values and meanings are as follow:
0 = 20 ms; l = 50 ms; 2 = 100 ms: 3 = 200 ms; 4 = 500 ms.
Channel 1 voltage range index, possible values and meanings are as fi.1llows:
0 = ±150µV; l = ±300~tV; 2 = ±600µV; 3 = ±1.5mV; 4 = ±3mV: 5 = ±6mV:
6 = ±15mV: 7 = ±30mV.
Charu1el 2 voltage range index, possible values and meanings are as follows:
0 = ±150~!V; l = ±300~tV: 2 = ±600µV: 3 = ±1.SmV: 4 = ±3mV: 5 =±6mV;
6 = ±15mV; 7 = ±30mV.
Special feature, always 0.
Filters index, possible values and meanings are as follows:
0 = 2Hz - l0KHz; 1 = 20Hz - l0KHz.
Note: The information stored on the SD Card is of the text fonnat, comma delimited. The file can be
imp011ed into any text editor to view or to modify the contents. The files may also be imp011ed into
spreadsheets, make sure the delimited option is highlighted and the file origin is set to "Arial- western
European"
The MAGSTIM Company LTD
41
November 2009