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David Velasco

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Latest activity by David Velasco
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    David Velasco commented,

    Official comment

    Hi Naeem That does seem counter-intuitive, doesn't it?  After all, the deeper the water, the more energy an ADCP needs to put into the water in order to reach the full range.  But recall that the E...

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    David Velasco commented,

    The short answer is yes, these measurements did not meet the automatic QA/QC and are therefore invalid.  As a rule of thumb, for the Eco, if data is present, they are valid.  If absent, then they a...

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    David Velasco commented,

    Official comment

    Hi Leonard Thanks for reaching out to us, and thanks for sending the photos.  Looking at the photos I do have some comments. First, the Eco's frame is Delrin (not aluminum) and obviously cinder blo...

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    David Velasco commented,

    Official comment

    That's a good question, Matthew!  The short answer is "no".  A core concept of the Eco--what allows it to be so user friendly--is that the instrument self-configures.  This covers selections that w...

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    David Velasco commented,

    Official comment

    The three depth layers in the Eco are NOT equally distributed over the entire water column.  In fact, as with any ADCP, they cannot be equally distributed due to sidelobe interference, which is a r...

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    David Velasco commented,

    Official comment

    That is correct.  The depth layers for the Demo Data set cannot be edited.  The reasons are rather complex and have to do with the how the cloud storage system works and how the .eco files are hand...

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    David Velasco commented,

    Official comment

    Hi Jacqueline Rosa!  Thanks for the question.  While we don't have an exact number, you can expect the charge to hold for several months and likely more than a year.  Battery technology has come a ...

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    David Velasco commented,

    Official comment

    I'll answer my own question above, for those who are interested: Bluetooth frequency and power level makes its range underwater VERY short, as in just a few cm.  This is further reduced if it's sea...

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    David Velasco created a post,

    Does the Eco's bluetooth comms work underwater?

    I enjoy not having to deal with cables when talking to my Eco.  However, can I talk to my Eco while it is underwater?