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FeelTech FY6600 60MHz 2-Ch VCO Function Arbitrary Waveform Signal Generator

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RainerB:
Version 2 is now ready.  The LDO's deliver 14V DC ( AC Input >=  200 V ) .
The isolated USB interface worked.
Ajusting of the OCXO with an external Controller and 1PPS from GPS worked.
My FY6800 has no internal frequency offset.
An ajusted TR5212  showed 10.000.000,0 Hz for the readward isolated 10 Mhz Outputs and for Output 1/2 when set to 10 Mhz.
If anybody is interessed in an empty pcb please let me know. I have 4 more here and no use for them.

Now I will add a pcb with an STM32F411 Blackpill  for adding some features :
- Fan controll
- OCXO ajusting with GPS
- Some Ham Radio functions e.g.:https://hamprojects.wordpress.com/2018/10/21/fy-6800-generator-as-beacon/
...

(Of course my modifications didn't fix the 4ns bug) 
Regards
Rainer

RainerB:
I created a new backside with Freecad. The code is attached.

Regards
Rainer

Labrat101:
Wow very nice work.

I abandoned my FY68** . as a total waste of Time . So I Locked it at 40Hz & fitted transistor to the output
 So it is now a 40Hz Cmos pulse Med Strobe . For my wife who suffers from dementia .
 At this stupid low frequency the jitter does not affect the daylight LED strobe .
 
   I have now the UTG962 works without fault without any jitter . Just love it .

All the best and Good luck .
 :popcorn:

battlecoder:

--- Quote from: RainerB on August 17, 2020, 06:39:20 am ---@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

Not sure what you want to say. Google translator doesn't really help.

--- End quote ---

Wonderful job. Looks like a killer replacement for the puny supply that comes inside and I would definitely love to upgrade my FY6600 with something like that.

Btw, what @supertrabuco said is "Pretty interesting project. Particularly all the connectors and external control". Then he asks if it would be possible to do the same for the FY6900, and replace the small switching supply for a linear 5V, 1.5A one.

Labrat101:

--- Quote ---@ battlecoder

Wonderful job. Looks like a killer replacement for the puny supply that comes inside and I would definitely love to upgrade my FY6600 with something like that.

Btw, what @supertrabuco said is "Pretty interesting project. Particularly all the connectors and external control". Then he asks if it would be possible to do the same for the FY6900, and replace the small switching supply for a linear 5V, 1.5A one.
--- End quote ---
The FY66 is upgradable
The FY68 /9  the only 2* real upgrades that would be valid  would be .
A)  Replace the Cyclone chip .  or (B)
B)  Fill with cement paint it a cool colour. Makes a great Door stopper .
*optional use as is .

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