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When monitoring with a 12-lead set, you can also choose the screen type as [ECG 12-Lead
Full-Screen].
When the screen type is set to [Normal Screen], cascaded ECG waveforms can be displayed.
To cascade ECG waveforms:
1. Select the [Screens] Quickkey[Screen Setup].
2. Select [ECG1 Casc.] in the second row. A cascaded waveform is displayed in two
waveform positions.
8.5.5 Changing the ECG Filter Settings
The ECG filter setting defines how ECG waves are smoothed. To change the filter setting,
select [Filter] from [ECG Setup] and then select the appropriate setting.
 [Monitor]: Use under normal measurement conditions.
 [Diagnostic]: Use when diagnostic quality is required. The unfiltered ECG wave is
displayed so that changes such as R-wave notching or discrete elevation or depression of
the ST segment are visible.
 [Surgery]: Use when the signal is distorted by high frequency or low frequency
interference. High frequency interference usually results in large amplitude spikes
making the ECG signal look irregular. Low frequency interference usually leads to
wandering or rough baseline. In the operating room, the surgery filter reduces artifacts
and interference from electrosurgical units. Under normal measurement conditions,
selecting [Surgery] may suppress the QRS complexes too much and then interfere with
ECG analysis.
 [ST]: Use when ST monitoring is applied.
WARNING
z The [Diagnostic] filter is recommended when monitoring a patient in an
environment with slight interference only.
8.5.6 Setting the Notch Filter
The notch filter removes the line frequency interference. Only when [Filter] is set to
[Diagnostic], the [Notch Filter] is adjustable.
1. Select the ECG parameter window or waveform area to enter its setup menu. Then
select [Others >>].
2. Set [Notch Filter] to [On] or [Off].
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