Mindray iMEC8 Vet, Operator'S Manual

Page: 73 / 202

8-7
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.The notch filter removes the line frequency interference. When [ Filter ] is not set to [ Diagnostic ], the notch
filter always stays on. When [
Filter
] is set to [
Diagnostic
], you can switch the notch filter on or off as required.
1. Select the ECG parameter window or waveform area to enter its setup menu. Then select [
Others >>
].
2. Set [ Notch Filter ] to

[ Strong ] when there is strong interference (such as spikes) with the waveform.

[ Weak ] when there is weak interference with the waveform.

[ Off ] to turn the notch filter off.
Set notch frequency according to the electric power frequency of your country. Follow this procedure:
1. When [ Notch Filter ] is set on, select [ Main Menu ]
→
[ Maintenance >> ]
→
[ User Maintenance >> ]
→
enter the
required password.
2. Select [
Others >>
]
→
[
Notch Freq.
] and then select [
50Hz
] or [
60Hz
] according to the power line frequency.
8.5.7 Changing the Pacer Reject Settings
Select [
ECG Setup
]
→
[
Others>>
]
→
[
Pacer Reject
], and toggle between [
On
] and [
Off
].
When [ Paced ] is set to [ Yes ]:

When [ Pacer Reject ] is switched on, the pace pulses are not counted as extra QRS complexes.

The pace pulse marks “|” are shown on the ECG wave when pace pulses are detected.
When [
Paced ] is set to [ No ], the pace markers are not shown on the ECG wave, and the options of [ Pacer Reject ] are
invalid.
8.5.8 Changing ECG Wave Settings
In the [ ECG Setup ] menu:

You can select [ ECG ], [ ECG1 ], or [ ECG2 ] to select a lead to view. The waveform of the selected lead should have the
following characteristics:

The QRS should be either completely above or below the baseline and it should not be biphasic.

The QRS should be tall and narrow.

The P-waves and T-waves should be less than 0.2mV.

If the wave is too small or clipped, you can change its size by selecting an appropriate [
Gain
] setting. If you select
[ Auto ] from [ Gain ], the monitor will automatically adjust the size of the ECG waves. In normal screen, only the
selected ECG wave’s size is adjusted. In other screens, all ECG wave sizes are adjusted simultaneously.

You can change the wave sweep speed by selecting [
Sweep
] and then selecting the appropriate setting.