652u and 655u User’s Manual
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CE-Compliance & Noise Considerations 4-3
Emissions/Immunity Conditions
The specific immunity conditions for CE compliance vary by product; but general immunity conditions
include:
Cables must be shielded, braid-type with metal-shelled connectors. Input terminal connections are to
be made with shielded wire. The shield should be connected to the chassis ground with the hardware
provided.
The host computer must be properly grounded.
In low-level analog applications some inaccuracy is to be expected when I/O leads are exposed to
RF fields or transients over 3 or 10 V/m as noted on the Declaration of Conformity.
CE Rules of Thumb for 652u and 655u
IOtech 652u and 655u are CE Compliant at the time they leave the factory and should remain in compliance
as long as the conditions stated on the
Declaration of Conformity
continue to be met.
A few general rules of thumb:
Use short cables.
When possible use shielded cables.
When assembling or disassembling components, take ESD precautions,
including the use of grounded wrist straps.
Ensure that the host computer is CE Compliant.
Review the most recent
Declaration of Conformity
for your 652u and/or 655u .
Ensure all system components are properly grounded.
