GE HEALTHCARE MAC 2000, Operator'S Manual

Page: 92 / 226

RR Analysis
RR Analysis Settings Window (cont'd.)
Field Description
Gain [mm/mV] Sets the magnitude of the ECG signal. Measurement
is in millimeters per millivolt (mm/mV) and includes
the following options:
• 2.5 mm/mV
• 5 mm/mV
• 10 mm/mV
• 20 mm/mV
• 40 mm/mV
• Automatic
The larger the selected measurement, the larger the
waveform. Only the representation of the waveform
changes; signal strength is not affected.
NOTE:
If Automatic is selected, the system calculates
the best gain based on the peak-to-peak
amplitudes of all displayed leads and the selected
display format.
Speed [mm/s] Changes the speed of the waveform on the display
and printout. Changing the speed also changes
the speed at which the wiper bar moves across the
display.
Measurement is in millimeters per second (mm/s) and
includes the following options:
• 12.5 mm/s
• 25 mm/s
• 50 mm/s
Low Pass Filter [Hz] Eliminates noise in the waveform by restricting which
frequencies are included. Frequencies are measured
in Hertz (Hz) and include the following options:
• 20 Hz
• 40 Hz
• 100 Hz
• 150 Hz
Selecting a frequency eliminates signals that exceed
that frequency. The smaller the frequency selected,
the more signal is filtered out. For example, a filter of
40 Hz displays only signals at 40 Hz or less; signals
greater than 40 Hz will be ignored.
ADS
Enables or disables ADS (Anti Drift System).
Rhythm Record
Enables/disables the printing of the rhythm lead
waveform on the report.
RR Table
Enables/disables the printing of the RR table on the
report.
92 MAC™ 2000 2053535-002K