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8.9. Display freezing
Display freezing function
The waveform display can be frozen by touching the middle of the screen with one finger. A
The waveform display can be frozen by touching the middle of the screen with one finger. A
The waveform display can be frozen by touching the middle of the screen with one finger. A
yellow line marking the boundary between old and the new data appears. The samples on the
marking the boundary between old and the new data appears. The samples on the
marking the boundary between old and the new data appears. The samples on the
left side of the marker are always the newest, moving towards older samples from the marker
left side of the marker are always the newest, moving towards older samples from the marker
left side of the marker are always the newest, moving towards older samples from the marker
to the left edge of the screen. The older samples continue on the right edge of the screen,
to the left edge of the screen. The older samples continue on the right edge of the s
to the left edge of the screen. The older samples continue on the right edge of the s
ending with the oldest on the right side of the marker.
ending with the oldest on the right side of the marker.
Touching the middle of the screen again clears the screen, and starts the monitoring.
Touching the middle of the screen again clears the screen, and starts the monitoring.
Touching the middle of the screen again clears the screen, and starts the monitoring.
8.10. Filter activation
There are three types of filters in the device: baseline filter, mains noise filter, and muscle
There are three types of filters in the device: baseline filter, mains noise filter, an
There are three types of filters in the device: baseline filter, mains noise filter, an
noise filter.
The mains noise and muscle noise filters can be turned on or off by using the
The mains noise and muscle noise filters can be turned on or off by using the
The mains noise and muscle noise filters can be turned on or off by using the
the touch screen (touching the icons). The status of the filters is indicated by the symbols
the touch screen (touching the icons). The status of the filters is indicated by the symbols
the touch screen (touching the icons). The status of the filters is indicated by the symbols
located on the right side of the display.
located on the right side of the
The baseline filter is designed to eliminate the vertical drift of the ECG signal.
line filter is designed to eliminate the vertical drift of the ECG signal.
line filter is designed to eliminate the vertical drift of the ECG signal.
There is one baseline filter for printing and storage, and another one for the display. The
There is one baseline filter for printing and storage, and another one for the display. The
There is one baseline filter for printing and storage, and another one for the display. The
former is a higher quality, FIR filter, with a 2.5 second delay. The latter has no delay,
former is a higher quality, FIR filter, with a 2.5 second delay. The latter has no delay,
former is a higher quality, FIR filter, with a 2.5 second delay. The latter has no delay, but
distorts the ECG signal more. The baseline filter for the display can be turned on or off only
distorts the ECG signal more. The baseline filter for the display can be turned on or off only
distorts the ECG signal more. The baseline filter for the display can be turned on or off only
by touching the respective icon on the touch screen.
by touching the respective icon on the touch screen.
The FIR filter for printing and storage can be activated under Setup/Filters/Baseline
The FIR filter for printing and storage can be activated under
mains noise filter frequency (50 or 60 Hz) can be set under
filter frequency (50 or 60 Hz) can be set under Setup/Filters
done prior to use, with respect to the local mains frequency.
done prior to use, with respect to the local mains frequency.
The display baseline filter, mains noise filter, and muscle noise filter indicators are located
The display baseline filter, mains noise filter, and muscle noise filter indicators are located
The display baseline filter, mains noise filter, and muscle noise filter indicators are located
one below the other (in the given order) on the screen. Activation is signalled by an inverse,
one below the other (in the given order) on the screen. Activation is signalled by an inverse,
one below the other (in the given order) on the screen. Activation is signalled by an inverse,
yellow indicator symbol.
Due to the two kinds of baseline filters
Due to the two kinds of baseline filters, there may be slight differences between the ECG
curves on the printout and the display.
curves on the printout and the display.
Caution!
The cutoff-frequency of the display baseline filter is 0.5Hz,
frequency of the display baseline filter is 0.5Hz, therefore the online ECG
waveform on the display is not suitable for morphological evaluation after filter activation.
waveform on the display is not suitable for morphological evaluation after filter activation.
waveform on the display is not suitable for morphological evaluation after filter activation.
The printed or stored records are adequate in all cases.
The printed or stored records are adequate in all cases.
Filter indicators:
Display baseline filter (turned
Display baseline filter (turned off)
Mains noise filter (turned
Muscle noise filter (turned
Muscle noise filter (turned off)
R-6730-EN02-E
HS112 C-1 User Manual
activation
, there may be slight differences between the ECG
turned on)
Setup/Filters/Baseline. The
Setup/Filters. This should be
therefore the online ECG
button or
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