If not, just order one of these: http://www.amazon.com/2port-Pci-16c550-Serial-ocard/dp/B00006B8C0
Michael R. Overholser Color Broadband Inc. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David J Taylor Sent: Wednesday, March 02, 2011 9:33 AM To: NTP Pool List Subject: Re: [Pool] External device sync / PPS / USB > 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? > > -- > Daniel Using a Sitecom USB hub which includes a serial port, I made a comparison here, Daniel: http://www.satsignal.eu/ntp/NTP-on-Windows-serial-port.html#usb 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 motherboards do. Cheers, David -- SatSignal software - quality software written to your requirements Web: http://www.satsignal.eu Email: [email protected] _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
