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Discussion of precise time and frequency measurement

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time transfer over USB

lists@lazygranch.com

Mon, May 20, 2013 2:06 PM

I suspect the idea is to use a port where no other devices, that is internal, are on the hub.

Like you, I never saw a usb port not on a hub.

-----Original Message-----
From: Jim Lux jimlux@earthlink.net
Sender: time-nuts-bounces@febo.com
Date: Mon, 20 May 2013 06:14:12
To: time-nuts@febo.com
Reply-To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] time transfer over USB

On 5/20/13 2:43 AM, Attila Kinali wrote:

Oh.. and connect the whole thing to a port on the PC that does not
have an internal USB hub.

That's a bit of challenge, I suspect.. A casual look at the PCs I have
around here running windows all seem to have on-mobo hubs when you
check Device Manager. I suspect they are integrated into one of the
peripheral chips.

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I suspect the idea is to use a port where no other devices, that is internal, are on the hub. Like you, I never saw a usb port not on a hub. -----Original Message----- From: Jim Lux <jimlux@earthlink.net> Sender: time-nuts-bounces@febo.com Date: Mon, 20 May 2013 06:14:12 To: <time-nuts@febo.com> Reply-To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] time transfer over USB On 5/20/13 2:43 AM, Attila Kinali wrote: > Oh.. and connect the whole thing to a port on the PC that does _not_ > have an internal USB hub. > That's a bit of challenge, I suspect.. A casual look at the PCs I have around here running windows all seem to have on-mobo hubs when you check Device Manager. I suspect they are integrated into one of the peripheral chips. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Attila Kinali

Mon, May 20, 2013 2:56 PM

On Mon, 20 May 2013 06:14:12 -0700
Jim Lux jimlux@earthlink.net wrote:

On 5/20/13 2:43 AM, Attila Kinali wrote:

Oh.. and connect the whole thing to a port on the PC that does not
have an internal USB hub.

In my experience, it's usually two or 4 ports connected to an internal
hub, where at least one is not on a hub at all. You have to try to find
out which they are. I dont know any similar tool with windows, but
on linux (and i guess *BSD) you can use lsusb to give you a hierarchy
of the USB system on your mainboard. There you can see which ports have
a hub behind them and which dont.

		Attila Kinali

--
The people on 4chan are like brilliant psychologists
who also happen to be insane and gross.
-- unknown

On Mon, 20 May 2013 06:14:12 -0700 Jim Lux <jimlux@earthlink.net> wrote: > On 5/20/13 2:43 AM, Attila Kinali wrote: > > > Oh.. and connect the whole thing to a port on the PC that does _not_ > > have an internal USB hub. > > > That's a bit of challenge, I suspect.. A casual look at the PCs I have > around here running windows all seem to have on-mobo hubs when you > check Device Manager. I suspect they are integrated into one of the > peripheral chips. In my experience, it's usually two or 4 ports connected to an internal hub, where at least one is not on a hub at all. You have to try to find out which they are. I dont know any similar tool with windows, but on linux (and i guess *BSD) you can use lsusb to give you a hierarchy of the USB system on your mainboard. There you can see which ports have a hub behind them and which dont. Attila Kinali -- The people on 4chan are like brilliant psychologists who also happen to be insane and gross. -- unknown