On Thu, August 31, 2006 16:10, Rob Kimberley said: > I wonder if anyone can help me out here. > > Looking for an IRIG-B Reader/Generator that can read IRIG-B and Generate > IRIG-B + 1 day. i.e. output is always exactly 1 day ahead of input. Must > be > able to start at an input of 000:00:00:00 (DDD:HH:MM:SS). > > Have scouted round most of the usual suppliers, but no luck so far.
Two semi wild ideas... There is a audio (sound card) IRIG-B refclock driver for NTP. Dr Mill has also written a sound card IRIG-B generator. Sync a computer with the audio driver or a conventional irig-B reader. Hack the software generator to output the code 1 day ahead. Take one IRIG-B reader to decode the incoming stream. Let the 1PPS output from that first card be a 1PPS input to a GPS steered IRIG-B generator. Do not connect the GPS recevier/antenna (Acutime or equivalent) to the card. Instead figure out which messages the timing card listens to emulate those messages with a day added. Feed the simulated messages to the GPS input from a computer serial port. A less fun one... >From the bc635cpp application help. "The function allows the user to add an offset to the IRIG B signal being produced by the bc635/637PCI device. This functionality is useful for driving IRIG B display units so local time appears on them. Allowed values are 12 through +12." Two daisy chained bancomm/datum/symmetricom cards each adding 12hours to the timecode, should seem to fit your demands. Did I miss something? Good luck! Björn PS btw... Have drivers for the GPS20 cards. Just need some time to update them for the rather late linux kernel version I run. DS > > For a UK customer of mine, so must be 240VAC working and have CE approval. > Ideally new, but can accept used if in good condition. > > Cheers > > Rob Kimberley > > _______________________________________________ > time-nuts mailing list > [email protected] > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
