[time-nuts] Re: World's most accurate PC clock!
kirbybq at bellsouth.net
Sun Jul 3 16:27:44 EDT 2005
I have a couple of the TrueTime 560-5900 PCI Generator cards. Basically
they accept 1 PPS or IRIG B sources and lock the cards internal clock to
the source. With 1 PPS input, they claim less than 1 uS sync, and with
IRIG B less than 5 uS. You have to write your own software to access
the clock...they mapped data registers in PCI memory. The card can also
act as a synchronized generator and generate 1 PPS or IRIG-B. They
included some basic software to show it was working and it could be used
to sync the PC clock....every once in a while
Bill Hawkins wrote:
>TrueTime used to make PC boards that would slave to an external
>standard. Don't know if they ran internal time counters and had
>their own time display software.
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