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Retaining programming for SDP-S and ADF4107 eval board

Question asked by zwarren on Jun 25, 2015
Latest reply on Jun 29, 2015 by rbrennan

I am using the EV-ADF411XSD1Z with the SDP-S board, with ADF4107 chip, and on-board 10MHz oscillator.  (Eval board powered with 12V DC)

I program the SDP-S with the ADI PLL software, and it seems to work properly - (produces the expected signals).

I unplug the USB cable, SDP-S goes dark as expected.

PLL board continues to work properly, as expected.

The problem:  turning off the Eval board itself seems to erase the programmed settings - plugging in SDP-S again and writing the latch functions again makes it work.

Is this normal? Or do I have to keep the SDP-S powered on constantly or else reprogram the board every time I want to use it?