Posts by SP5GNI
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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
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Hello
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
ad936x_ext_refclk=<40000000>
Good! But not really. After Pluto rebooting I have got again
# fw_printenv ad936x_ext_refclk
ad936x_ext_refclk=<39999804>
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