System Settings
4-6
Figure 4-2 Common Settings screen
[AC Filter]: [50Hz], [60Hz] and [OFF]
AC filter is used to resist the interference of the AC power supply to avoid
the reducing or distortion of the ECG signal.
[EMG Filter]:[ 25Hz], [35Hz], [45Hz] and [OFF]
EMG filter is used to resist the interference on the ECG signal caused by
strong muscle vibration.
[DFT Filter]: [0.05Hz], [0.10Hz], [0.20Hz] ,[0.50Hz] and [OFF]
Drift filter is used to resist the drift of baseline and ensure the ECG signal is
on the baseline in the recording process.
[Lowpass Filter]: [75Hz], [100Hz] ,[150Hz ]and [OFF]
Lowpass filter is used to limit the bandwidth of the input signal and reduce
the signal with the frequency higher than the set cutoff frequency. The cutoff
frequencies the user can select are 75Hz, 100Hz ,150Hz and OFF.
When [EMG Filter], [DFT Filter] and [Lowpass Filter] are set to
[OFF] and [AC Filter] is enabled, the waveform can be displayed
without distortion.
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