Hi... I currently use a Conexant (Rockwell) Jupiter GPS receiver to calibrate a standalone Oscilloquartz B541 OXCO as a local frequency standard, and, while being less accurate that a professionnal GPS slaved frequency standard, it far overmeets my needs.
The beauty with the Conexant Jupiter is that it features a GPS precise 10kPPS (10kHz squarewave) signal, which is by far easier to work with than the well known 1PPS TIMEMARK found on most GPS receivers. My problem with the 10kPPS signal is that it doesn't lockup at each time the GPS receiver gets a fix if the backup battery is plugged-in. If i remove the backup battery, the 10kPPS signal locks-up everytime i cycle the receiver's power and get a fix. One more thing: The fix is good regardless of the 10kPPS lock condition... This screws me up! My temporary solution is to use the receiver without the battery backup, but this gives me a lenghty TTFF problem: The receiver takes a lot more time to get a fix if i don't plug-in the battery. Have you worked with this receiver and the 10 kPPS signal? Is there a way i could get sure this signal locks-up with the GPS clocks? When the receiver's 10kPPS doesn't lockup, it runs at 9998.8365 - 9998.8404 PPS, which is far more away than the initial (turn-on) out-of-lock (10000.02PPS) condition. Thanks for your attention... Normand Martel VE2UM Montreal, Canada __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts