So my trimble TSC1 Pro XRS (bought in 2000) is getting old I guess and it change byitself the date. I collected data this week, but it indicate from 1998.

I view this info because I can't apply diferential correction. Indeed, the post process file from 1998 aren't avaible anymore.

So I want to change the change the date of the record in *.ssf files.

I tried two different ways : - The office pathinder (4.0) SSF record editor. It doesn't allow to edit the date.

  • I copy and paste all the record from the *.ssf files in notepad ++, then change the date, then change the files extention in *.ssf. But when I open this files in office pathinder, it doesn't open it correctly.

I'm still looking for any option.

  • Any chance you can make one of these files available?
    – Spacedman
    Jun 9, 2018 at 7:31
  • Are you talking about the file date on the SSF file, or the dates of the points contained in it? The file date shouldn't affect differential correction, and the epochs of the GPS data come from the clocks in the GPS satellites, not the TSC1. If the TSC1 is messing up the epochs in the SSF file, I don't know if I'd trust the spatial locations.
    – Dan C
    Jun 11, 2018 at 14:10
  • I'm talking about the point caputred by the GPS, so the dates of the points contained in it. Viewing my points and the coordinates it's not looking so bad. Maybe the date problem it's from the inside clock of the TSC1 witch come from 1st from the satellites, then when the TSC1 it's off or disconnected, it's come from a inside batterie (like PC / motherboard system). This batteries it's about 18 years old, i'm expecting it's dead. That's a 1st point. However i'm still looking for a solution to edit the date of the point. Thanks to your help. Jun 11, 2018 at 18:46
  • Trimlble is editing my files, but not a clue to the methods or ways. Jun 12, 2018 at 13:52

1 Answer 1


I finally found a solution :

  • Open *.ssf files in office pathinder
  • Menu tools> other > check *.ssf files
  • Select the right files
  • Options : check modify GPS week number manually
  • Fill wiht the right GPS week number, that you going to find here : https://www.labsat.co.uk/index.php/en/gps-time-calculator
  • Then you can apply the right post-traitement.

Otherwise my date problem seems to come from my TSC1.

  • Thanks! All the information was pretty useful for my old Trimble Pro-XT
    – aldo_tapia
    Jul 22, 2019 at 19:18

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