Welch Allyn CP 50 Plus 12-lead resting electrocardiograph - User Manual - Manual (Page 20)

To view the device information
1. Touch the menu button.
2. Touch Settings > System > About or Upgrade.
Verifying proper operation
To ensure the accuracy of test data, you should verify proper operation of the
electrocardiograph before it is used for the first time with patients. You should reverify
proper operation once a year.
To verify proper operation
1. Use an ECG simulator to acquire and print a standard 12-lead ECG of known
amplitude and rate.
2. Look for the following indications of proper operation:
• Printing should be dark and even across the page.
• There should be no evidence of print-head dot failure (no printing breaks forming
horizontal streaks).
• Thermal paper should move smoothly and consistently during printing.
• The waveforms should have no distortion or excessive noise.
• The amplitude and rate of the waveforms should match the input value from the
ECG simulator.
• Z-fold thermal paper should stop with perforations near the tear bar, indicating
proper cue-sensor operation.
3. If you see any indications of improper operation, call Welch Allyn Technical Support.
16 Setup CP 50™ and CP 50 Plus™ 12-lead resting electrocardiograph