Ashtech G8 Evaluator

Discussion in 'GPS Technical Discussion' started by oldradarguy, Mar 7, 2018.

  1. oldradarguy


    Mar 7, 2018
    Likes Received:
    Hello, I'm new to this forum.
    Not sure where to post this... I thought Trimble bought Ashtech... or was it Magellan?
    Anyway, I had this old Ashtech G8 lying around in the parts drawer.
    Yeah, it's pretty much an antique.
    I was hoping to get it to work.
    It's installed inside a G8 Evaluator chassis.
    Serial comms seems to be working. The com port is set to 4800 baud.
    I have an active antenna connected to the SMA port.
    I'm sure the almanacs and ephemeris files are all outdated.
    The problem is I can't set the time.
    I installed a new RTC battery.
    $PASHQ,RID returns $PASHR,RID,EX,HA34,*14
    $PASHS,INI returns $PASHR,NAK*30
    $PASHS,ZDA,003700.00,01,01,2018 returns $PASHR,NAK*30
    $PASHQ,ZDA returns $GPZDA,060136.00,22,07,1998,+0000*6D
    oldradarguy, Mar 7, 2018
  2. oldradarguy

    Nuvi-Nebie Moderator

    Aug 16, 2015
    Likes Received:
    Welcome to the forum.
    The problem with early GPSs is that they only had a 20 year 'week counter', some failed to store the correct date after only 10 years, there is some background info. on the (Link Here)
    Nuvi-Nebie, Mar 7, 2018
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