gha...@gmail.com said: > You mention "low cost units which require you to add a power connector, > etc". Could you recommend any that can be bought online? With RS-232, > please?
There are two obvious choices. A bit of googling may find more details and/or other boards. ---------- The new favorite is the Sure demo board. http://www.sureelectronics.net/goods.php?id=99 http://www.sureelectronics.net/goods.php?id=98 (The version with the Bluetooth is cheaper than the one without. ??) http://www.satsignal.eu/ntp/Sure-GPS.htm ---------- The old standby is the Garmin GPS-18x-LVC. Garmin makes several versions of the GPS-18x. http://www8.garmin.com/manuals/GPS18x_TechnicalSpecifications.pdf Be sure to get the LVC version. The others don't have a PPS. I got mine from Provantage for roughly $70. http://www.provantage.com/garmin-010-00321-36~AGRMO006.htm Setup info: http://time.qnan.org/ http://www.satsignal.eu/ntp/FreeBSD-GPS-PPS.htm The GPS-18 (no x) is the older version. You probably can't find it for sale. It's much less sensitive, but gave much better timing over the serial port. ---------- The GlobalSat MR350P is another option. It comes with a PS2 connector, but you can chop that off. Their adapter cable doesn't include the PPS. http://www.usglobalsat.com/p-58-mr-350p-bulkhead.aspx http://www.usglobalsat.com/store/download/58/mr350p_ds_ug.pdf That PPS is only 1 uSec wide which may be too narrow for some/most systems to capture. They sell a couple of adapter cables, but none of them support PPS. You can stretch the PPS signal with the TAPR FatPPS. http://www.tapr.org/kits_fatpps.html -- These are my opinions. I hate spam. _______________________________________________ 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.