Steve Kroop <<info>>
writes:

A filter setting 4 on the 6030 makes it beep while sitting on a
table in indoors partially because of minute changes in pressure that I
mentioned to you but also because, at that setting, the filter is too weak, and
the noise coming from the sensor is interpreted as change in altitude. Like I
mentioned, I have good results with a setting of 3.

From what I can see, the XCtracer is great at beeping exactly when it’s moved,
and stopping its beeps exactly when it does not move, but I am told that the
motion sensors and associated filters can be tricked into giving false
positives. Try this: tip it over 90º a few times quickly, back and forth, put it
on a table: After a while it will start beeping. I know that it is unlikely that
you would be jostled that much in normal flight but the point is standing on the
ground tests with simple uniform motion does not tell the full story. With no
disrespect to new devices, I’d rather have a vario that is one or two beeps
late, but that I can trust and know for sure that nearly every beep indicates
lift.

The sensor electronics in the Connect 1 are even better than the 6030 in terms
of noise. Here, you can really go to the fastest filter setting (used in the
Speed G. profile), and have it still be quiet when sitting on a table. Testing
with an XCtracer show it may be 1/10 of a second later in regular conditions, but
in very weak lift, you can get beeps out of a Connect 1 when the XCtracer
remains quiet.