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Recording a Resting ECG ECG Options This system provides several options for configuring an ECG. The options, presented as option keys across the bottom of the display, are listed in the following tables. ECG Options–First Row Option Description Patient Data Opens the patient data entry window. 25 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: • 25 mm/s NOTE: The initial measurement displayed is set in System Configuration > Resting ECG Setup. • 50 mm/s • 12.5 mm/s - 5 mm/s • 12.5 mm/s When the option includes two speeds (12.5 mm/s - 5 mm/s), the first speed is for the display and the second speed is for the printout. Changing the measurement here does not change the measurement set in System Configuration. 10 mm/mV. NOTE: The initial measurement displayed is set in System Configuration > Resting ECG Setup. Changes the magnitude of the ECG signal on the display or in the report. Measurement is in millimeters per millivolt (mm/mV) and includes the following options: • 5 mm/mV • 10 mm/mV • 20 mm/mV • 40 mm/mV • 2.5 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. Changing the measurement here does not change the measurement set in System Configuration. 2053535-002C MAC™ 2000 ECG Analysis System 69