I played with this around five or six years ago but unfortunately my notes from that time are likely to be buried somewhere still waiting to be scanned or indexed. All the necessary information though is in the user and SDK manuals, connections for the 10MHz external input and EFC output are on the 15 way I/O connector and there's even demo software which I'm pretty sure was all I used to make the necessary adjustments. One manual, pre Symmetricom, even has what looks to be a full set of schematics. I've just run the software again to check but it won't do much if it can't find the card so would need to fire up another PC with a spare slot to check further. I wasn't really happy at the time with my attempts to condition an external Vectron OCXO, it was certainly better than using the internal oscillator but there were some odd jumps and drifts using either which suggested these might be artifacts of the board itself rather than the Vectron OCXO. I've since acquired another BC637PCI, and want to try both again with other oscillators, but that's quite some way down a very long to do list, now reminded though I might take a quick look later:-) In the meantime, I have got copies of manuals and software etc and will get those zipped up today and make them available for download. Regards Nigel GM8PZR
In a message dated 07/02/2014 03:36:46 GMT Standard Time, t...@patoka.org writes: Hello, Does anybody seen any links to the information how to implement external OCXO to Symmetricom PCI TFP BC635/BC637 ? -- WBW, V.P. _______________________________________________ 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. _______________________________________________ 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.