Posts by SP5GNI

    Hi Andreas

    not sure what do you mean "bring all calibration settings in the Console to zero"

    I was trying to set ad936x_ext_refclk to 0 or leave blank, but it did't help.

    73 Miro


    My old Pluto failed and I have bought a new one ver. D for DigiKey. I have a problem I can not solve though I spend a lot of time on the new device. Looking for ideas...

    I updated firmware to 0.34 version.

    I made sucesfully typical operations:

    fw_setenv attr_name compatible

    fw_setenv attr_val ad9364

    fw_setenv maxcpus

    I switched the clock to external, as I have precision 40MHz source, used succesfully with previous Pluto:

    fw_setenv refclk_source external

    Then I set its frquency:

    fw_setenv ad936x_ext_refclk "<40000000>"

    After rebooting Pluto the result was not good - the receiver frequency was shifted about 9.6 kHz (ie. beacons), and transmit frequency was not aligned with RX frequency. I want to add that I use 25 MHz clock for LNB from the same 10 MHz source as for 40MHz, and with old Pluto it worked perfect.

    After checking the parameter ad936x_ext_refclk I found:

    # fw_printenv ad936x_ext_refclk

    ad936x_ext_refclk=<39999804> !!!!

    I set again fw_setenv ad936x_ext_refclk "<40000000>". Then checked:

    # fw_printenv ad936x_ext_refclk


    Good! But not really. After Pluto rebooting I have got again

    # fw_printenv ad936x_ext_refclk


    I checked many options as:

    fw_setenv ad936x_ext_refclk '<40000000>'

    fw_setenv ad936x_ext_refclk 40000000

    fw_setenv ad936x_ext_refclk_override '<40000000>'

    fw_setenv xo_correction 40000000

    After pluto-reboot reset the value of ad936x_ext_refclk alwys was coming back to <39999804>

    It looks that this idiotic value is factory set and the change is blocked. I don't know why!

    I'm not very skilled in programing, work only under Windows.

    Any idea how to solve the problem?

    Miro SP5GNI