Re: [ntp:questions] PPS as a falseticker!!!

[valizadeh65]

thanks for the reply

i added tos mindist X and changed x from 0.001 to 10 but none of them worked!

any answers for my questions in first post? especially the first one!

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Re: [ntp:questions] NTP+ NMEA +GPS +PPS

[David Taylor]

On 27/08/2014 10:46, valizade...@gmail.com wrote:

Hi  again !
David and Brian, Thank you both for your comments
I tested out the GPS on a win_XP Operating system, and now PPS is seen in 
(ntpq-p).
I am sure now that the problem is related to serialpps driver in 
Win_2008_R2/64bit.

Here are what I have done:
a-  Installed serialpps-20120321-signed
b-  Ensured that \serialpps-20120321-signed\serialpps\x64\serialpps.sys was copied 
to C:\Windows\system32\drivers
c-  Ensured that serialpps.sys is seen in driver file details in COMport 
properties window
d-  Made Environment Variable with Name:  PPSAPI_DLLS and Value:\ 
...\serialpps-ppsapi-provider.dll

1-  Any other way to investigate where the problem arise from? How to make 
sure the serial pps is working or not?

[]

Just to check, what happens if you enter at a command prompt:

  dir %PPSAPI_DLLS%

Is the DLL listed correctly?  On my system I get:

  20/07/2011  03:5169,120 serialpps-ppsapi-provider.dll

The details for the driver on my system are:

  14/05/2012  16:08   102,288 serialpps.sys

I've only tested on the non-server versions of Windows.

--
Cheers,
David
Web: http://www.satsignal.eu

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Re: [ntp:questions] PPS as a falseticker!!!

[David Lord]

valizade...@gmail.com wrote:

thanks for the reply

i added tos mindist X and changed x from 0.001 to 10 but none of them worked!

any answers for my questions in first post? especially the first one!


Hi

The settings needed can depend on your gps device, make, model,
firmware release etc.

For my 'sure' gps as well as tos mindist 0.4 I have:

server 127.127.20.2 mode 18 prefer
fudge 127.127.20.2 stratum 7 time2 0.407 flag1 0 refid GPSb

server 127.127.22.2 minpoll 4 maxpoll 4
fudge 127.127.22.2 flag2 0 flag3 1 refid PPSb

The time2 value was obtained by setting 'noselect' rather
than 'prefer' and monitoring the GPSb offset over a few
days then setting time2 to a value that included that range.


David

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