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BeneVision N1 Patient Monitor Operator’s Manual
8.5.3.5
Setting the ECG Filter
To set the ECG waveform filter mode, follow this procedure:
1.
Select the ECG numeric area or waveform area to enter the
ECG
menu.
2.
Select the
Setup
tab.
3.
Set
Filter
.
◆
Diagnostic
: use when diagnostic quality ECG is required. The unfiltered ECG waveform is displayed so
that changes such as R-wave notching or discrete elevation or depression of the ST segment are
visible.
◆
Monitor
: use under normal measurement conditions.
◆
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. The surgery filter reduces
artifacts and interference from electrosurgical units. Under normal measurement conditions,
selecting
Surgery
may suppress certain features or details of the QRS complexes.
◆
ST
: recommended for ST monitoring.
8.5.3.6
Switching On or Off the Notch Filter
The notch filter removes the line frequency interference. To switch on or off the notch filter, follow this
procedure:
1.
Select the ECG numeric area or waveform area to enter the
ECG
menu.
2.
Select the
Setup
tab.
3.
Switch on or off
Notch Filter
.
NOTE
•
The notch filter can only be switched on or off when ECG Filter is set to Diagnostic. In other filter
modes, the notch filter is always on.
8.5.3.7
Setting Notch Filter Frequency
Set notch filter frequency according to the power line frequency of your country. To set notch filter frequency,
follow this procedure:
1.
Select the
Main Menu
quick key
→
from the
System
column select
Maintenance
→
input the required
password
→
select .
2.
Select the
Other
tab.
3.
Set
Notch Frequency
to
50 Hz
or
60 Hz
according to the power line frequency.
8.5.4
Disabling the Smart Lead Off Function
The monitor provides the smart lead off function . When the lead of the first ECG wave is detached but another
lead is available, the monitor automatically switches to the available lead to recalculate heart rate, and to analyze
and detect arrhythmias. When you reconnect the detached leads, the monitor automatically switches back to
the original lead.
The smart lead off function is enabled by default. To disable this function, follow this procedure:
1.
Select the ECG numeric area or waveform area to enter the
ECG
menu.
2.
Select the
Setup
tab.
3.
Switch off
Smart Lead
.
8.5.5
Setting the Priority of the ECG Lead Off Alarm
To set the priority of the ECG lead off alarm, follow this procedure:
