Hi SS is signal strength. There is a setting somewhere buried deep in the SCPI to switch the display units.
Bob > On Dec 14, 2014, at 2:40 PM, Dr. David Kirkby (Kirkby Microwave Ltd) > <[email protected]> wrote: > > Hi, > > I'm trying to make sense of the output from the status screen of this GPSDO > > E-113> :SYSTEM:STATUS? > ------------------------------- Receiver Status > ------------------------------- > > SYNCHRONIZATION ............................................. [ Outputs Valid > ] > SmartClock Mode ___________________________ Reference Outputs > _______________ >>> Locked to GPS TFOM 3 FFOM 0 > Recovery 1PPS TI +48.6 ns relative to GPS > Holdover HOLD THR 1.000 us > Power-up Holdover Uncertainty ____________ > Predict 8.5 us/initial 24 hrs > > ACQUISITION ................................................ [ GPS 1PPS Valid > ] > Tracking: 6 ____ Not Tracking: 1 ________ Time > ____________________________ > PRN El Az SS PRN El Az UTC 19:12:37 14 Dec > 2014 > 5 43 191 71 21 13 307 GPS 1PPS Synchronized to UTC > 13 67 96 59 ANT DLY 0 ns > 15 36 290 52 Position ________________________ > 26 81 307 50 MODE Hold > 28 50 108 53 > 30 39 62 45 LAT N 51:39:04.122 > LON E 0:46:36.379 > ELEV MASK 10 deg HGT +44.16 m > (MSL) > HEALTH MONITOR ......................................................... [ OK > ] > Self Test: OK Int Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK > E-113> > > > What does the "SS" mean? According to the 58503A / 59551A *Symmetricom* manual > > http://www.leapsecond.com/museum/hp59551a/097-59551-02-iss-1.pdf > > there should be a "C/N" there, not a "SS". The manual says 50 is the > maximum value for C/N, and 35 is the minimum for stable tracking. The > fact I have four satellites showing an SS of over 50 indicates that I > can't just assume SS=C/N. > > The manual for the 58503B, > > http://www.leapsecond.com/museum/hp58503a/097-58503-13-iss-1.pdf > > which I assume is a later model than the 58503A, says again C/N is > used on the 58503B, but it does say "SS" is used on the 59551A, which > is a quite a different beast - it does not have a 10 MHz output. For > that it says SS ranges from 0 to 255, and that 20-30 is weak. *IF* I > can assume the SS in the 58503A works the same was as SS in the > 59551A, then it looks like I have 6 satellites which are not weak. But > that is a big "IF" > > Does anyone have an HP manual for the 58503A? > > Dr. David Kirkby Ph.D CEng MIET > Kirkby Microwave Ltd > Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT, > UK. > Registered in England and Wales, company number 08914892. > http://www.kirkbymicrowave.co.uk/ > Tel: 07910 441670 / +44 7910 441670 (0900 to 2100 GMT only please) > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
