DDS ECOs

1
In order to use the PWR_ENABLE pin on the DDS connector, a jumper wire must
be soldered from pin 14 on the DDS connector to the pad of R11 closer to the
edge. R11 itself should not be populated. R11 is directly to the left of the
level shifter on the back. This is necessary because the PWR_ENABLE signal
gets passed through the level shifter which cannot drive the enable signal
low when the power is off.

2
The polarity of the three tantalum capacitors are not marked in silkscreen.
The positive terminal of C11 should be pointing towards the 0.1" right angle
pins, the positive terminal of C23 should be pointing towards C22 and the
positive terminal of C50 should be pointing towards U6

3
The voltage dividers for the power supervisor are incorrect. R21 should be
23Kohms and R25 should be 62Kohms. This must be fixed to get a correct reading
from PWR_GOOD and to get correct indication from the power good LED: D2.