ECG Monitoring
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2) Select [Setup] tab.
3) Set [Waveform Speed].
8.4.8.5 Set ECG Filter Mode
1) Select the ECG parameter area or waveform area to enter [ECG] menu.
2) Select [Setup] tab.
3) Set [Filter].
[Diagnostic]: Select it when there is a special need for diagnostic quality. In this mode, you can see the
changes in waves, such as the notch of R wave, ST segment elevation or depression.
[Monitor]: Select it for normal monitoring.
[Surgery]: Select it for high-frequency or low-frequency interference of signals. High-frequency
interference usually causes high-amplitude sharp pulses, making ECG signals irregular. Low-frequency
interference usually leads to baseline drift or thicker baseline. The use of [Surgery] mode in an operating
room can reduce artifacts and interference from electrosurgical equipment. However, the use of this
mode under normal monitoring may inhabit the display of QRS complex.
[ST]: Select it for ST segment analysis.
8.4.8.6 Set Notch Filter
The Notch filter can inhibit the 50Hz or 60Hz frequency component in the signals acquired. When the filter mode is
not Diagnosis, the system will turn on [Notch Filter] automatically; when the filter mode is [Diagnosis], [Notch Filter]
can be turned on or off as needed.
1) Select the ECG parameter area or waveform area to enter [ECG] menu.
2) Select [Setup] tab.
3) Set [Notch Filter] as follows:
[Strong]: Select it when the wave jitters frequently (e.g., the wave has burrs).
[Weak]: Select it when the wave jitters infrequently.
[Off]: Notch filtering will not be performed.
8.4.8.7 Set Notch Filter Frequency
You can set the Notch filter frequency according to the local power supply frequency. Steps are as follows:
1) Select [Main Menu] hot key → [System] → [Maintenance], enter the maintenance password and click the
Enter key.
2) Select [Module] tab → [ECG] tab.
3) Set [Notch Filter] to [50Hz] or [60Hz] according to the grid power supply frequency.
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