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PC clock synchronization using GPS
Ken in Regina
If you are using Windows 10 (and possibly earlier versions of Windows) and are connected to the internet all or most of the time the PC will, by default, check regularly with an internet time server and update the clock as needed. The internet time servers are as accurate as GPS signals for synchronizing the PC clock.

In Windows 10 you can check this setting:

1. Launch the Control Panel
2. Click Date & Time
3. You'll get a window with three tabs
4. Click the Internet Time tab
5. Click the Change Settings button to see the exact settings and change them if needed.

...ken...
Navi
Thank you ken for your reply.
My major concern is to synchronize pc time by using gps as the place where i will be, there won't be any possibility of internet connection.
so i want to get the information about time synchronization using gps module.

--Nivedita
Ken in Regina
Is there a GPS module built in to your computer?

If not, do you have an external GPS device?

...ken...
Navi
yes i do have an external gps module which is having an inbuilt antenna
Ken in Regina
Exactly what brand and model do you have?

How does it connect to the computer?

...ken...
Navi
here is the link mentioned below of the gps reciever which i am using

http://www.rhydolabz.com/wiki/?p=229

i am using it on windows xp and i have also read the NMEA data regarding different identifiers (ZDA- time and date) but exactly i am not able detect that how to communicate my pc with this device
also i dont know which software is suitable for this work

i want to connect it through rs 232 port because i do have rs232 port in my system but dont have VCP to access it using USB port
Ken in Regina
It has been a very long time since I used Windows XP or connected a GPS by RS232 port.

Try this:

https://www.coaa.co.uk/gpstime.htm

I remember using it a few years ago and it worked well.

...ken...
Navi
thankyou so much ken

can you please suggest me some more methods to get my project working as i am running out of time.
As i have tested it with two more software (hyperterminal and windmill) windmill is good but i don't have any idea about how to deal with it.
Also i want to ask is there any need of parsing the gps message to get this done?
Ken in Regina
You have not said what your project is so I can't make any suggestions.

...ken...
Navi
it is time synchronisation of pc using rs232 port in embedded C
Ken in Regina
I'm sorry, I thought you just needed an app that would sync your PC clock from a GPS on an RS232 port. I haven't written any serious code since the late 1970s, not long after the original C language was created. What part(s) do you need help with?

...ken...
Navi
right now i just want to know is it possible to sync pc time with gps module without any prior coding?
that is if I just connect the device with RS232 cable then power it with the help of source and configure it with the help of GPSTime,
is there any need of prior data to be send to correct the time of my pc or GPStime will do it.
Marvin Hlavac
Navi, I just installed GPStime. It works. I tested it with my USB GPS receiver BU-353. I inserted the GPS unit into a free USB port on my laptop, went to the Device Manager to see which COM port number was created by the GPS unit, entered the COM port number into the configuration settings of GPStime, clicked the "Start" in GPS time and it told me my clock had been updated. GPStime also allows to set a time offset, so to test it I tried a 5 minute time offset. My laptop was then automatically set to the wrong time by 5 minutes.


GPSTime allows one second accuracy. I use an application called "Dimension 4" which adjusts my laptop with 0.001 second accuracy, but it requires the Internet.
Navi
Quote:
Originally Posted by Marvin Hlavac
Navi, I just installed GPStime. It works. I tested it with my USB GPS receiver BU-353. I inserted the GPS unit into a free USB port on my laptop, went to the Device Manager to see which COM port number was created by the GPS unit, entered the COM port number into the configuration settings of GPStime, clicked the "Start" in GPS time and it told me my clock had been updated. GPStime also allows to set a time offset, so to test it I tried a 5 minute time offset. My laptop was then automatically set to the wrong time by 5 minutes.


GPSTime allows one second accuracy. I use an application called "Dimension 4" which adjusts my laptop with 0.001 second accuracy, but it requires the Internet.
Hello Marvin
the place where i am going to use this has no internet connectivity
so it is not possible for me to use "Dimension 4"
can you please suggest me something else please.
Ken in Regina
Marvin just confirmed that GPStime does exactly what you want so no other suggestion is necessary.

...ken...
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