GE MAC 2000 Operator's Manual

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Table 10-1 Stress Option Keys – First Row (Table continued)Option DescriptionSweep Speed Changes the speed of the waveform on the display and printout. Changing the meas-urement also changes the speed of the wiper bar on the display.The measurement is in millimeters per second (mm/s) and includes the followingoptions:• 25 mm/s• 50 mm/s• 12.5 mm/s - 5 mm/s• 12.5 mm/sWhen the option includes two measurements (12.5 mm/s - 5 mm/s), the first speed isfor the display and the second speed is for the printout.Gain Changes the magnitude of the ECG signal on the display or in the report. The measure-ment 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• AutomaticThe larger the selected measurement, the larger the waveform. Only the representa-tion of the waveform changes; signal strength is not affected.NOTEIf Automatic is selected, the system calculates the best gain based onthe peak-to-peak amplitudes of all the displayed leads and the selecteddisplay format.Low Pass Filter Toggles through the Low Pass Filter options: 20 Hz, 40 Hz, 100 Hz, and 150 Hz. Itdefaults to the setting selected on the Stress Setup window. (See 12.4.1 Stress ECGSettings on page 121 for more information.)If the ADS filter type was selected in Stress Setup, this softkey is displayed regardlessof whether the filter is on or off. If the FRF filter type was selected in Stress Setup, thissoftkey is displayed only if the filter is off.ECG Filter Type Toggles on and off the ECG filter type (ADS or FRF) selected on the Stress Setupwindow. In addition, if the FRF filter type was selected, toggling the filter off alsodisplays the Low Pass Filter softkey.More Toggles between the first and second row of options.Table 10-2 Stress Text Option Keys — Second RowOption DescriptionPace Enhance Increases the readability of pacemaker ECGs. Options are On and Off.Continues on the next pageOperator Manual 10.1 Stress Mode Interface2053535-002 Revision T MAC 2000 ECG Analysis System 91/198