W9WIS
Waushara County, Wisconsin, USA

The HP Z3801A's frequency accuracy is better then 1 X 10 -9 (better then 1 hz in 10 GHz) and has been measured to 1 X 10 -11 (you do the math). It is comparable to a Rubidium frequency standard ! They make a great laboratory standard and their frequency and timing accuracy can be traced to NIST. The Standard has a 10 MHz BNC output and time pulse output on the rear.
To learn more about the software which generates this data, please visit K8CU at:
www.realhamradio.com


Power-on time
Days Hrs Mins Secs
           HEWLETT-PACKARD,Z3801A,3542A01175,3543-A. Life count: 59461
SYNCHRONIZATION ............................................. [ Outputs Valid ]
SmartClock Mode ___________________________   Reference Outputs _______________
>> Locked to GPS                              TFOM     3             FFOM     0
   Recovery                                   1PPS TI +3.1 ns relative to GPS
   Holdover                                   HOLD THR 1.000 us
   Power-up                                   Holdover Uncertainty ____________
                                              Predict  400 ns/initial 24 hrs
                                                
ACQUISITION ............................................ [ GPS 1PPS CLK Valid ]
Satellite Status __________________________   Time ____________________________
Tracking: 2        Not Tracking: 7            LOCAL    01:00:31     11 Dec 2019
PRN  El  Az   SS   PRN  El  Az  PRN  El  Az   1PPS CLK Synchronized to UTC
 17  62  54   84   * 2  28 224  *24  27 284   ANT DLY  0 ns
 28  40 137   48     3  27  60                Position ________________________
                   * 6  66 210                MODE     Hold
                    12  21 312                
                   *19  74 357                LAT      N  44:07:24.756
                    22  14  42                LON      W  89:04:09.718
ELEV MASK 10 deg   *attempting to track       HGT              +257.18 m  (MSL)
HEALTH MONITOR ......................................................... [ OK ]
Self Test: OK    Int Pwr: OK   Oven Pwr: OK   OCXO: OK   EFC: OK   GPS Rcv: OK