OK ... I have C245 on the middle board, same as you. Tweaking it and ...
Hmmm, it does affect the range (twitchy is an understatement!) but still
no lock. To be continued
Now by the 'frequency control board' do you mean the board that overlaps
the top of the D-Sub connector? I have been a
appear
to be any PPS output either. These also have a cutout to expose the 15
pin connector that is on the base board in front of the physics package.
Paul.
On 2/17/14 11:03 PM, Simon Lyons wrote:
Hello everyone,
I have a 5680 which is failing to lock. My DDS frequency is 8388608Hz,
but it
Hello everyone,
I have a 5680 which is failing to lock. My DDS frequency is 8388608Hz,
but it's sweeping between about 8388638 and 8388740. My unit has 3
levels of PCBs in the DDS/VCO corner and there is no trimcap labeled
C217. Does anyone know how to adjust the sweep center frequency on this