I just installed DCC block occupancy detectors and am getting false positives only when the layout is in an operating session with lots of people and trains. When I'm by myself there are no false indications. I'm at a loss what to do, or how to test if the changes have been effective.
I'm using a variant on the VT-5 inductive (transformer-type) occupancy detector (see
During the operating session I saw the occupancy indication change from unoccupied to occupied and then back to unoccupied in about 30 seconds. Most of the time it showed occupied when there was nothing on the track. Now that I'm by myself, it is steadily showing unoccupied.
I had a thought that there might be stray fields. I was going to try using aluminum foil to shield the detector, but then I got to wondering if that would be effective if the fields were magnetic.
Suggestions would be very much appreciated.
I also posed this request to snipped-for-privacy@yahoogroups.com.