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?