• Where the integrity of external protective earth conductor arrangement is in doubt, the CP 20 shall be operated
from its internal electrical power source.
• All signal input and output (I/O) connectors are intended for connection of only devices complying with IEC
60601-1, or other IEC standards (e.g. IEC 60950), as appropriate to the device. Connecting additional devices
to the CP 20 may increase chassis and/or patient leakage currents. To maintain operator and patient safety,
consideration should be given to the requirements of IEC 60601-1-1, and leakage currents should be measured
to confirm no electric shock hazard exists.
• The CP 20 has not been designed for use with high-frequency (HF) surgical equipment and does not provide a
protective means against hazards to the patient.
• The quality of the signal produced by the electrocardiograph may be adversely affected by the use of other
medical equipment, including but not limited to defibrillators and ultrasound machines.
vi
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