Be as specific as possible when reporting issues and *ALWAYS* include the full version number of the application you are using and your exact *CAMERA MODEL*
NEVER POST YOUR KEY IN ANY PUBLIC FORUM, INCLUDING THE O'TELESCOPE SUPPORT FORUM ::: IF YOU DO YOUR KEY WILL BE DEACTIVATED WITHOUT NOTICE!
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dts350z
In my ongoing frustration with USB connections, I was thinking about USB 3.0 hubs, and active repeater cables, under the assumption that the USB 2.0 device traffic would be aggregated and sent down the wire at USB 3.0 speeds.
It turns out not to be the case. In fact, USB 3.0 hubs and cables have completely separate data paths and wiring for USB 2.0 traffic, as described here:
http://electronicdesign.com/embedded/what-s-difference-between-usb-20-and-30-hubs
USB 3.0 hubs and cables act identical to USB 2.0 hubs and cables, when all the devices plugged in are USB 2.0, so there is no advantage (unless/until one or more of your devices are USB 3.0).
If anyone has a different understanding please chime in.
Z
PS I'm now experimenting with a 15m (vs. my previous 20m) USB 2.0 active cable to see if it is any more reliable. All my stuff lives outside (under a 24x365 scope cover and usb hubs inside tupperware) and I find I need to spray all the connections with contact cleaner each time, to get reliable connections, and often struggle with one or more devices not working. It's not a bandwidth issue. I can run two canon cameras, a focuser, a filter wheel, the mount (with ASCOM pulse guiding) and PHD2 with SSAG all at the same time without problems, when things are working ;0)
The contact cleaner I'm using is http://www.amazon.com/gp/product/B00006LVEU/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
The connections on the laptop side are also an issue, with one not working at all (hmm... need to re-try with the 15m cable). I attribute this to strain on the usb solder connections on the dell ultrabook motherboard (which I have had replaced once already).
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