Re: Crash in AP ASCOM driver
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I would have to research that a bit to try to come up with a matrix
of all of the configuration scenarios but it would be faster to just try it and
see what happens.
In my experience, poor drivers, bad/oxidized/noisy connections,
noisy/unshielded cables and poor-quality USB devices account for 98% of all
USB and USB/Serial communication problems.
A good, brand-name USB hub (NOT Belkin) and cables might be the
biggest improvement.
And if you can install a native serial port, that might be the best
solution of all. And if you have a laptop, sometimes it is even possible
to add a physical serial port or two with a Mini-PCI card, if you have an open
Mini-PCI slot.
USB can be fast, but it is a cheap, nasty interface with a lot of
limitations.
Christopher Erickson
Consulting Engineer Summit Kinetics Waikoloa, HI 96738 www.summitkinetics.com From: ap-gto@... [mailto:ap-gto@...] Sent: Monday, March 09, 2015 8:05 AM To: ap-gto@... Subject: Re: [ap-gto] Re: Crash in AP ASCOM driver Chris,
I have been thinking about changing my USB-2 hub to a
USB-3 hub. It already plugs into a USB-3 native laptop port, so I think it might
help improve data traffic congestion, with a faster pipeline. I know the devices
are only USB-2, but with a 7-port hub, the speed to the laptop of all that data
mix should improve, and possibly reduce conflicts coming into the hub.
My only concern is whether the existence of just a
single USB-2 device might trigger the USB-3 hub to operate strictly at USB-2
speeds, including sending the mix to the laptop.
Joe
From: mailto:ap-gto@...
Sent: Monday, March 09, 2015 1:07 PM
To: ap-gto@...
Subject: RE: [ap-gto] Re: Crash in AP ASCOM driver Various USB burst data transfer modes can do that. It's a USB
issue.
Best solution might be to install a real serial port and avoid the
USB bus.
Christopher Erickson
Consulting Engineer Summit Kinetics Waikoloa, HI 96738 www.summitkinetics.com
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