ADRV9002 TES - Limitation of decimal point in datarate

Hi, everyone.

In TES v0.17.0

When I input "507.8125 kSPS" in dataport sample rate, TES is down with error pop-up

I am guessing it's caused by having too many decimal places. but curious what the specific restrictions are.

Sincery,
JaeKyung

  • 0
    •  Analog Employees 
    on Sep 16, 2021 1:56 PM

    Hello JaeKyung,

    I'll look into this for you now. Our decimators and PLLs aren't able to infinitely adjust the resulting sample rate at the interface, so it might well be the case that this is too many decimal places, but I will confirm with the team.

    Best Regards,
    Oisín.

  • 0
    •  Analog Employees 
    on Sep 22, 2021 10:29 AM in reply to OWatkins

    Hello again JaeKyung,

    After conferring with the team, it does seem that this is a GUI bug. It's believed that the device should support this sample rate. I will bring this issue to the SW team now and, if possible, we'll see a bug fix in one of the coming releases of TES.

    Thanks for bringing this to our attention!

    Best Regards,
    Oisín.

  • +1
    •  Analog Employees 
    on Sep 24, 2021 10:30 AM

    Hello again JaeKyung,

    After bringing this issue to the Software Team's attention, they have responded as follows:

    1. GUI may not be able to take 4 decimal places here (minimum 1Hz resolution) but should error elegantly and not hit exception.
    2. There are frequencies that are not supported (Dead-zones). Removing the decimal place and setting all sample rates to 507.812 Ksps will yield a similar error indicating this is a dead zone. Users can achieve 507.81 successfully.

    I hope this clarifies everything! We'll be updating the GUI in short order, however 507.812 kSps does not appear to be a sample rate we can support. 507.81 kSps seems to work fine.

    Best Regards,
    Oisín.

  • Hi Oisin,

    I have a question.

    According UG-1828 (Rev. PrB) page 76, Dead-zone is not include 507.812 Ksps.
    Even if infer items 13 to 16 of the list, 507.812 Ksps is not included in the list.

    Are there any additional dead-zones on this list?

    Sincery,
    JaeKyung.