We have a pair of PS2205 units. From time to time, they appear to hang:
The (WinXP) Device Manager says that they are operating properly, but
neither our application nor Picoscope-6 can open them. When in this state,
I don't hear any relay(?) clicks when the opens are attempted. Unplugging
and re-plugging the units clears the symptom.
The symptom appears rather unpredictably, but I can most reliably
generate it by putting the (PC) host into Hibernate, waiting for
a few minutes, and then waking it up again. I have also seen it after the
units have been sitting idle for a few hours (the PC may or may not have
gone into Standby during that time). I have seen this symptom both when
(a) the units are direct-connected and (b) they are connected through a hub.
Our SDK version is r1_0_0. The picoscope-6 version is 126.96.36.199. The USB
driver is version 188.8.131.52 (04/16/2007).
These units are destined for a remote location, where power-cycling them
(manually) is not a useful option. Is there something we can do to prevent/
correct this symptom?