@Labrat101
@Attached are the shematics of version 2.0. (Some resistor values will be modified during first tests)
An eeprom poti for the OCXO voltage and an I²C IO expander are added on the board
I replaced some regulators with THT version to save space on the board and use a heat sink.
I add some sma connctors for HF signals.
Mechanical problems are fixed. (hopefully)
ToDo:
I have to add a connector for controller driven fan.
@ supertrabuco
Yo no hablo español
Very impressive you have given a lot of thought into this .
I Have found another Bug in my FY6800 and its the Cyclone chip .. I still can't get the jitter to hold stable . so I ran some test on the Cyclone vi and its has some faults
ie .. Its ether a fake or a reject version . From reading the Cyclone manual it has a internal DAC control on the input were the xtal enters . there are 4 inputs and are hardware
enabled .
I enabled the pin and added another xtal as an experiment . it fails the test . also all the Jitter and frequency control of the cyclone is out of sinc on my chip.
Which means the chip is not original . I don't know if this is the case with all the FY68.. or just a few .
The original Cyclone chips do not have this problem .. I should have checked this earlier and not chased the rabbit down the hole .
I guess I should have realized this.
How can they produce this unit with high quality or original chips for $80 and make a profit
So I am going to buy the UNI-T UTG962 which is far superior and I have not found any one who can say anything bad .. Other than it Just works out the box
If your project corrects some of the problems your chip maybe be a better version.
Have fun and keep up the good work .