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Teric - Critical pressure and GTR error

Discussion in 'Shearwater Research' started by CWK, Apr 7, 2019.

  1. scubadada

    scubadada Diver Staff Member ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Philadelphia and Boynton Beach
    10,298
    5,649
    113
    Seems odd to me that loss of the comm link would end up giving you a gas pressure of zero and a GTR of zero. I only have experience with an Oceanic VT3 and a VT4. If the comm link is dropped for more than 15 secs, the gas pressure blinks at the last known pressure, a loss of comm link message scrolls, and the GTR (ATR) simply stays at the last known value. As soon as the comm link is reestablished, the new gas pressure and the new ATR are normally displayed. These are shown in the download log display as a red area on the pressure curve. I'll see if I can find one. Seems like if this was common with the Teric, others would have reported it before.

    Here's a VT3 comm link loss at just under 30 minutes
    upload_2019-4-8_16-36-14.png
     
  2. Jay

    Jay Need to dive more!

    # of Dives: 50 - 99
    Location: Melbourne, OZ.
    725
    350
    63
    FWIW I've not had a loss of comms during a dive but on pre-dive it just flashes comms. I would be surprised if it didn't do the same. It only takes tank pressure readings every 5 seconds, and I assume you've left yours on the default 10sec data (logging) rate. The pressure in your chart (post#6) appears not to go to zero either.

    Any chance you're using two transmitters of the same colour?
     
  3. scubadada

    scubadada Diver Staff Member ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Philadelphia and Boynton Beach
    10,298
    5,649
    113
    Hi @CWK

    Out of interest, I went to the dive details corresponding to the dive profile I posted in post #11. To my surprise, gas pressure and air time remaining are both zero. The dive computer does not display zeros, the display is as I described it above.
    upload_2019-4-9_10-28-57.png
     
  4. CWK

    CWK Manta Ray

    # of Dives: 1,000 - 2,499
    Location: Malaysia
    724
    349
    63
    I've had coms failure messages before on the Teric but this is the first time that I've seen the GTR0 and Critical Pressure errors.
     

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