Re: [time-nuts] Capture of leapsecond on HP 58503A time and frequency reference receiver
Reposting the output in a fixed width font. It looked fixed on my other client. I note the clock says "Time _ +1 leap second pending" at 23:59:60, which one can argue is wrong. *Status reports a couple of times before the leap second. * scpi > SYSTEM:STATUS? --- Receiver Status --- SYNCHRONIZATION . [ Outputs Valid ] SmartClock Mode ___ Reference Outputs ___ >> Locked to GPS TFOM 3 FFOM 0 Recovery 1PPS TI +8.7 ns relative to GPS Holdover HOLD THR 1.000 us Power-up Holdover Uncertainty Predict 11.1 us/initial 24 hrs ACQUISITION [ GPS 1PPS Valid ] Tracking: 6 Not Tracking: 2 Time _ +1 leap second pending PRN El Az SS PRN El AzUTC 23:56:00 31 Dec 2016 16 12 287 45 2 12 37GPS 1PPS Synchronized to UTC 21 28 171 6623 11 323ANT DLY 0 ns 25 44 106 101 Position 26 40 290 123 MODE Hold 29 73 68 114 31 61 236 85 LAT N 51:39:04.132 LON E 0:46:36.343 ELEV MASK 10 deg HGT +44.72 m (MSL) HEALTH MONITOR . [ OK ] Self Test: OKInt Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK scpi > SYSTEM:STATUS? --- Receiver Status --- SYNCHRONIZATION . [ Outputs Valid ] SmartClock Mode ___ Reference Outputs ___ >> Locked to GPS TFOM 3 FFOM 0 Recovery 1PPS TI +11.4 ns relative to GPS Holdover HOLD THR 1.000 us Power-up Holdover Uncertainty Predict 11.1 us/initial 24 hrs ACQUISITION [ GPS 1PPS Valid ] Tracking: 6 Not Tracking: 2 Time _ +1 leap second pending PRN El Az SS PRN El AzUTC 23:59:00 31 Dec 2016 16 13 288 37 2 11 37GPS 1PPS Synchronized to UTC 21 29 171 9523 11 322ANT DLY 0 ns 25 42 107 110 Position 26 41 290 85 MODE Hold 29 72 67 120 31 61 234 101 LAT N 51:39:04.132 LON E 0:46:36.343 ELEV MASK 10 deg HGT +44.72 m (MSL) HEALTH MONITOR . [ OK ] Self Test: OKInt Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK *Here's the actual leap second. * scpi > SYSTEM:STATUS? --- Receiver Status --- SYNCHRONIZATION . [ Outputs Valid ] SmartClock Mode ___ Reference Outputs ___ >> Locked to GPS TFOM 3 FFOM 0 Recovery 1PPS TI -3.3 ns relative to GPS Holdover HOLD THR 1.000 us Power-up Holdover Uncertainty Predict 11.1 us/initial 24 hrs ACQUISITION [ GPS 1PPS Valid ] Tracking: 6 Not Tracking: 2 Time _ +1 leap second pending PRN El Az SS PRN El AzUTC 23:59:60 31 Dec 2016 16 14 288 51 2 11 37GPS 1PPS Synchronized to UTC 21 30 171 5423 11 322ANT DLY 0 ns 25 42 107 95 Position 26 42 291 73 MODE Hold 29 72 66 124 31 60 233 120 LAT N 51:39:04.132 LON E 0:46:36.343 ELEV MASK 10 deg HGT +44.72 m (MSL) HEALTH MONITOR . [ OK ] Self Test: OKInt Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK *Now one after the leap second. The notice about a
[time-nuts] Capture of leapsecond on HP 58503A time and frequency reference receiver
This was a bit hit and miss. I sent 'SYSTEM:STATUS?' by hand, when I thought it was the right time. I got lucky. There are a couple of outputs before the leapsecond, and one or two after it. I did an audio recording on my Virgin mobile phone. I'll upload that later, after some sleep. Dave scpi > SYSTEM:STATUS? --- Receiver Status --- SYNCHRONIZATION . [ Outputs Valid ] SmartClock Mode ___ Reference Outputs ___ >> Locked to GPS TFOM 3 FFOM 0 Recovery 1PPS TI +8.7 ns relative to GPS Holdover HOLD THR 1.000 us Power-up Holdover Uncertainty Predict 11.1 us/initial 24 hrs ACQUISITION [ GPS 1PPS Valid ] Tracking: 6 Not Tracking: 2 Time _ +1 leap second pending PRN El Az SS PRN El AzUTC 23:56:00 31 Dec 2016 16 12 287 45 2 12 37GPS 1PPS Synchronized to UTC 21 28 171 6623 11 323ANT DLY 0 ns 25 44 106 101 Position 26 40 290 123 MODE Hold 29 73 68 114 31 61 236 85 LAT N 51:39:04.132 LON E 0:46:36.343 ELEV MASK 10 deg HGT +44.72 m (MSL) HEALTH MONITOR . [ OK ] Self Test: OKInt Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK scpi > SYSTEM:STATUS? --- Receiver Status --- SYNCHRONIZATION . [ Outputs Valid ] SmartClock Mode ___ Reference Outputs ___ >> Locked to GPS TFOM 3 FFOM 0 Recovery 1PPS TI +11.4 ns relative to GPS Holdover HOLD THR 1.000 us Power-up Holdover Uncertainty Predict 11.1 us/initial 24 hrs ACQUISITION [ GPS 1PPS Valid ] Tracking: 6 Not Tracking: 2 Time _ +1 leap second pending PRN El Az SS PRN El AzUTC 23:59:00 31 Dec 2016 16 13 288 37 2 11 37GPS 1PPS Synchronized to UTC 21 29 171 9523 11 322ANT DLY 0 ns 25 42 107 110 Position 26 41 290 85 MODE Hold 29 72 67 120 31 61 234 101 LAT N 51:39:04.132 LON E 0:46:36.343 ELEV MASK 10 deg HGT +44.72 m (MSL) HEALTH MONITOR . [ OK ] Self Test: OKInt Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK scpi > SYSTEM:STATUS? --- Receiver Status --- SYNCHRONIZATION . [ Outputs Valid ] SmartClock Mode ___ Reference Outputs ___ >> Locked to GPS TFOM 3 FFOM 0 Recovery 1PPS TI -3.3 ns relative to GPS Holdover HOLD THR 1.000 us Power-up Holdover Uncertainty Predict 11.1 us/initial 24 hrs ACQUISITION [ GPS 1PPS Valid ] Tracking: 6 Not Tracking: 2 Time _ +1 leap second pending PRN El Az SS PRN El AzUTC 23:59:60 31 Dec 2016 16 14 288 51 2 11 37GPS 1PPS Synchronized to UTC 21 30 171 5423 11 322ANT DLY 0 ns 25 42 107 95 Position 26 42 291 73 MODE Hold 29 72 66 124 31 60 233 120 LAT N 51:39:04.132 LON E 0:46:36.343 ELEV MASK 10 deg HGT +44.72 m (MSL) HEALTH MONITOR . [ OK ] Self Test: OKInt Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK scpi > SYSTEM:STATUS?
