[time-nuts] solved: HP 53131A - reset security code

[Mod Mix]

Adrian made me to try something which turned out to work.
It's just a bit tricky:

  * 7 times arrow left gives 7 zeros (0.000000)
  * most left 0 changed to 1 (up arrow: 1.00000)
  * proceed to habe 1.053131
  * change it to 0.05313 (down arrow at first 1 position
  * press Enter
  * Bingo!
    GPS 10 MHz at Ch1 now reads relative to the internal OCXO
    10.000,000.0[01] MHz  ,-)

Thanks to all
Ulli