Happy New Year All, I have an interesting noise problem brought to me. The noise is a 500-900 mV pulse seen at 50 MHz on a power lead from a DC to DC converter (48V to 5V) to a VME cage. There were two scenarios: first, both the power supply and the cage are earth-grounded, and the pulse is seen at both the power supply and the cage. Second, the cage is left floating, and the pulse is only seen at the power supply. The noise seems to be a ring, and the leads between the supply and cage are fairly long. Has anybody seen something like this before, or does anybody have any suggestions or comments? We have several ideas, but not much time. The frequency and the fact that the pulse reaches almost a volt concerns us greatly. Thanks in advance,
Bob Tims Standards and Compliance [email protected] The opinions expressed in this correspondence in no way reflect the opinions of Ericsson Inc. RCIC - http://www.rcic.com Regulatory Compliance Information Center
