[Pool] External device sync / PPS / USB
David J Taylor
david-taylor at blueyonder.co.uk
Wed Mar 2 17:32:41 UTC 2011
> As long as we’re on this topic, is it important to distinguish serial
> ports that are connected via an internal (or external) USB bus? Does
> this increase jitter? What if there’s other traffic on the USB bus?
Using a Sitecom USB hub which includes a serial port, I made a comparison
Yes, it does increase the jitter. Whilst certainly not as good as a
direct connection, it's considerably better than a LAN-only connection.
Certainly not "a waste of your time and money" if USB is your only choice,
but check whether your motherboard has a serial port header and just needs
the lead to an RS-232 male connector on the back of the PC. Many
SatSignal software - quality software written to your requirements
Email: david-taylor at blueyonder.co.uk
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