Product Manual

SE-1200 Series Electrocardiograph User Manual System Setup
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DFT Filter greatly reduces the baseline fluctuations without affecting the ECG signals. The
purpose of this filter is to keep the ECG signals on the baseline of the printout. The set value is
the low limit of the frequency range, including 0.05Hz, 0.15Hz, 0.25Hz, 0.32Hz, 0.5Hz and
0.67Hz.
11.2.3 Setting EMG Filter
Press Tab or Shift + Tab to move the cursor to the EMG Filter list box in the Filter Setup
window. Press the Up or Down arrow to highlight an option.
EMG Filter suppresses disturbance caused by strong muscle tremor. The cutoff frequency can be
set to 25Hz, 35Hz or 45Hz. Select Off to turn off the function.
11.2.4 Setting Lowpass Filter
Press Tab or Shift + Tab to move the cursor to the Lowpass Filter list box. Press the Up or
Down arrow to highlight an option.
Lowpass Filter restricts the bandwidth of input signals. The cutoff frequency can be set to 150Hz,
100Hz or 75Hz. All the input signals whose frequency is higher than the set cutoff frequency will
be attenuated.
NOTE:
1. Only when EMG Filter is set to Off, can the setting of Lowpass Filter be effective.
2. To the patient with a pacemaker, the EMG filter should be set to Off and the Lowpass
filter should be set to 150Hz; or else, the amplitude of the pulses may decrease, the
width may increase, and the diagnosis results may not include the pacemaker
information.