Philips M1353A, M1351A manual Avoiding, Interference, Can be done to mitigate the problem

Electromagnetic Compatibility

Avoiding	When electromagnetic interference (EMI) is encountered there are a number of things that
Interference	can be done to mitigate the problem.

1.Eliminate the source. Possible sources of EMI can be turned off or moved away to reduce their strength.

2.Attenuate the coupling. If the coupling path is through the patient cables the interference may be reduced by moving and/or rearranging the cables to a different location of the monitor. If the coupling path is through the power cord, plugging the monitor into a different mains circuit may help.

3.Connect the equipotential terminal of the monitor to the corresponding terminal of your mains installation.

4.Add external attenuators. If EMI becomes an unusually difficult problem, external devices such as an isolation transformer or a transient suppressor may help. A Philips customer engineer can assist you in determining the need for external devices.

174 Appendix B Safety and Environment