Emc - TTI CPX200 Service Manual

This power supply has been designed to meet the requirements of the EMC Directive
89/336/EEC.
Compliance was demonstrated by meeting the test limits of the following standards:
Emissions
EN50081-1 (1992) Generic emission standard for residential commercial and light
industry. Test methods and limits used were:
a) EN55022 Conducted, Class B
b) EN55022 Radiated, Class B
Immunity
EN50082-1 (1992) Generic immunity standard for residential, commercial and light
industry. Test methods and limits used were:
a) EN60801-2 (1993) Electrostatic Discharge, 8 kV air discharge.
b) IEC801-3 (1984) RF Field, 3 V/m.
c) IEC801-4 (1988) Fast Transient, 1 kV peak (AC line) and 0.5kV peak (DC outputs).
Note that electrostatic discharge direct to the output terminals will not damage the instrument but
may trip the Overvoltage Protection (OVP), turning the output off, see Protection section.
Note also that if the power supply is operated in a high RF field, the RF signal will be picked up
on unscreened leads between the supply and the load. If the load is likely to be sensitive to such
signals, connect it to the supply using screened leads.
Cautions
To ensure continued compliance with the EMC directive the following precautions
should be observed:
a) after opening the case for any reason ensure that all signal and ground connections
are remade correctly before replacing the cover. Always ensure all case screws are
correctly refitted and tightened.
b) In the event of part replacement becoming necessary, only use components of an
identical type, see the Service Manual.

EMC

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