Environmental Monitoring (Environmental Monitoring)F. Nenci, R. Cavalieri - 16:38 Monday 23 May 2011 (29437)
Print this reportWE Coil Driver crate fansWe know from 29406 that the source of 44 and 88Hz dark fringe lines are the CD crate fans.
To reduce their effect we increased the distance from the fan and the CD crate itself, installing a short piece of plastic pipe between the fan and the crate (see red lines in the picture).
We also relocated the 10 ohm series resistor box (and the related cables) from its original position (see green box in the picture below), it was too close to the new fan installation.