SC-USB USB to CS I/O Opto-isolated Interface
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If you experience any problems using this software, please report this to
Campbell Scientific, giving full details with any solution if available, for
possible inclusion in a future release of this User Guide.
6.3 Electronic Interference
Electronic emissions emanating from the SC-USB interface itself are very low.
However, while verifying this during the development of the SC-USB,
Campbell Scientific became aware that many PCs have poor filtering of
emissions from their USB ports.
These emissions become apparent when a cable is plugged into the USB port,
as the cable acts as an antenna. If any such PC emissions (coming from the
SC-USB cable) cause problems with other equipment, you may be able to
reduce such noise by adding a clip-on ferrite choke to the SC-USB cable.
Position the choke on the cable close to the USB connector. The size of ferrite
is dependent on the level and frequency of noise emitted by the PC, and so
needs to be selected by trial and error. If in doubt, seek advice from the PC
manufacturer.
