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Measurement option will be used again, you shall refer to User Setting Menu and change the
Measurement option to "Enable".
EMG Filter: Press to toggle between On and Off. This filter is used to reject muscular noise. If
EMG is set On, "+M" will be displayed on the screen.
EMG filter is a low pass filter which varies based on time and the signal slope .The filter bandwidth
varies from one sample to another sample proportional to the signal slope.
To remove ECG signal noise, take the following steps:
1- At first remove any noise sources (for more details, please refer to Troubleshooting chapter)
2- If after taking above action the noise is not rejected, set On EMG filter.
Using 25 Hz and EMG filters together may cause variation in
ECG signal amplitude.
Note: After any change occured in User Setting Menu ,when you want to exit from this menu, a
message will appear on the screen asking you whether to save changes or not.
3- If the signal is still noisy, use low pass filter.
4- Using LOW PASS FILTERS :25,35,75 Hz may decrease the amplitude of QRS
Complex.
After setting On EMG filter wait a few seconds to record.
Figure 3-10 Confirmation Menu
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