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Ver. 2.41
CardioCare2000 Operation Manual
Filter Setting
AC power noise, base line drift caused by breathing , EMG signal can be recorded along with
the output ECG signal. To set the AC noise filter, move to
“FLT” menu to call up “AC” menu
and press
key.
key toggles between off, 50hz, 60hz. Off indicates that filter does
not suppress ac interference. As for 50Hz or 60Hz, filter suppresses 50Hz or 60Hz AC power
noise. In case of battery power, ECG signal is clear only with Off setting because AC noise
interference hardly exist. The selection is 50Hz for most of Europe and 60Hz for USA and other
countries. The selected setting is shown on the bottom line of the output form indicated by Cut
off AC.
Base line drift is caused by patient breath. Base line drift filter can be set by pressing
key.
BASE
key switches on or off. On or off indicates base lien filter is applied or not. The
selected setting is shown on the bottom line of the output form indicated by
‘0.1hz-‘ as for filter
on and
‘0hz-‘ as for filter off.
EMG signal is induced from muscle and internal organs of the patient.
For clear ECG signal output, it is necessary to eliminate EMG signal interference.
EMG filter can be set by pressing MUSC
key. MUSC
key switches on or off. On
or off indicates EMG filter is applied or not. The selected setting is shown on the bottom line of
the output form indicated by Cut off EMG.
Low pass filter can be selected to optimize ECG signal after applying above three filters and if
ECG signal is still interfered. To set the low pass filter, move the menu to
“FLT” to call up “LPF”
menu and press
key.
key toggles between off, 40hz, 100hz, 150hz. As for 40Hz,
it indicates filter suppresses higher frequency than 40Hz. The selected setting is shown on the
bottom line of the output form indicated by
‘-250hz-‘ as for off, by’-40hz’ as for 40hz, by’-100hz’
as for 100hz, by
’-150hz’ as for 150hz.
To apply filter could result in ECG distortion. So, filter should be appropriately applied to reduce
the fluctuation without affecting the ECG signal when output signal is badly interfered only.
For your reference, base line file and ac filter should be always active and EMG filter can be
applied appropriately. It is recommended for LPF to set 150Hz during diagnosis.
Summary of Contents for CardioCare 2000
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