User manual

The Configuration Menu
4-3
Chapter 4: Configuring
Your Cardiograph
You can set the filters to be used for both Auto and Rhythm reports.
Auto Report:
• The 0.5 Hz Baseline Wander filter suppresses the greatest amount of baseline
wander. However, this filter may alter the ECG's ST segment.
• The 0.15 Hz Baseline Wander filter provides some baseline wander suppression
without distorting the ECG’s ST segment.
• The 0.05 Hz Baseline Wander filter delivers the highest fidelity signal, but pro-
vides the least baseline wander suppression.
• The 40 Hz Noise filter offers maximum noise suppressions, but reduces the fidel-
ity of the signal.
• The 100 Hz Noise filter provides some noise suppressions while offering an accu-
rate signal representation.
• The 150 Hz Noise filter delivers the highest fidelity signal, but provides the least
high-frequency noise suppression.
• The Artifact filter may be enabled to remove small-amplitude, high-frequency sig-
nals, characteristic of muscle tremor.
The AC filter, which screens out ECG artifact caused by AC power line
interference, is built into the cardiograph and cannot be disabled.
The filter status message “F” appears in the upper-right corner of the display when
the artifact filter is enabled.
If accurate ST segment contours are required for ECGs, do not use the 0.5 Hz
baseline wander filter. This filter suppresses baseline wander to the extent that it
may alter the ST segment. Instead, configure your cardiograph to use the 0.15 Hz or
0.05 Hz baseline wander filter. Regardless of filter used, the rhythm characteristics
of the ECG are accurately recorded.
CAUTION