Thanks. Although I'm brand new here, I've seen some posts talking about Lady 
Heather (some with amusing suggestions) and will look into it. Might just be 
what I need. I'm working with NTP right now, using Dimension 4, after having 
discovered D4's history info.
Thanks again, Ron


      From: Mark Sims <[email protected]>
 To: "[email protected]" <[email protected]> 
 Sent: Wednesday, August 3, 2016 8:50 PM
 Subject: [time-nuts] Using the HP 58503a to correct your PC clock
   
Lady Heather has the ability to set the system clock from any just about any 
GPS receiver.  It can set the clock every day, hour, minute, or when system 
time and receiver time diverge by more than "x" milliseconds.  Most stock 
Windows  systems have a clock granularity of +/- 15.6 milliseconds,  so the 
default "time set anytime" divergence threshold is  40 milliseconds.


Lady Heather now talks to SCPI devices and has support for the HP5xxxx devices, 
but I don't have one and have not verified that the program works with them or 
analyzed their time stamp message arrival time offset.  You can get something 
like a cheap Ublox GPS module for less than $20 and they work really well.


------------------


> This has probably been covered in the past, but is there a way correct or 
> control a PC (Windows 7) clock with the HP 58503A GPS receiver?
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