Electromagnetic Compatibility (EMC) Specifications
PageWriter TC 70 Cardiograph Service Manual A-9
WARNING The use of accessories and cables other than those specified in the Philips PageWriter
TC70 system service and user documentation can result in increased emissions or
decreased immunity of the system.
WARNING The PageWriter TC70 cardiograph should not be used next to or stacked on top of other
equipment. If you must stack the product, you must check that normal operation is
possible in the necessary configuration before the product is used.
Reducing Electromagnetic Interference
The PageWriter TC70 cardiograph and accessories may become sensitive to interference from
other RF energy sources including power lines. RF energy sources include other medical
devices, wireless devices, information technology equipment, and radio/television
transmission. Should interference be encountered, as demonstrated by artifact on the ECG
trace, unintended change on operating state, or unit lockup, attempt to locate the source by
assessing:
if the interference is intermittent or constant?
does the interference occur only in certain locations?
does the interference occur only when in close proximity to certain medical devices?
does the ECG signal quality change dramatically when the AC power cord is unplugged?
Once the source of the interference is located, attempt to attenuate the EMC coupling path by
distancing the cardiograph from the source of the interference as much as possible. If further
assistance is needed, contact the Philips Response Center nearest you.
Table A-1 Guidance and Manufacturer’s Declaration: Electromagnetic Emissions
The PageWriter TC70 cardiograph is intended for use in the electromagnetic environment
specified in the table below. The customer or the user of the PageWriter TC70 cardiograph
should assure that it is used in such an environment.
Emissions Test Compliance Electromagnetic Environment: guidance
RF Emissions
CISPR 11
Group 1 The PageWriter TC70 cardiograph uses RF energy
only for its internal function. Therefore, its RF
emissions are very low are not likely to cause any
interference in nearby electronic equipment.
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