Dear Derek,
      With unshielded cable the emission is less and with shielded cable it
shoots up. From this behavior I guess this is a ground loop issue rather
than a common mode issue.

Sincerely

K.Balasubramanian
Project Leader - Hardware.


                                                                           
             "Derek Walton"                                                
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             10/04/2006 12:08                                      Subject 
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HI All,

I have a system on test that has a single very strong emission at about 125
MHz. Is this an Ethernet related frequency?

It appears to jump 20 dB when the receive end, outside the chamber, is
plugged in. Also, with unshielded cables it's not there. With shielded its
about 30 dB up at the same frequency.

Anyone have suggestions as to the source?

Thanks,

Derek Walton
L F Research
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