Hi DerKammi,
Couldn't find a overview of the serial commands on the git.
See attached speadsheet
Hi DerKammi,
Couldn't find a overview of the serial commands on the git.
See attached speadsheet
Hi pauluzs,
Thank you for helping.
The "SPI Register" column in your document should be removed as it suggests that there is one register associated to each command.
The serial protocol is only handled by the Front Panel CPU and is transparent for the FPGA.
@DerKamni
The full serial protocol description relased by Feeltech could also be added as well to the repository.
You're right, made a typo in this. Updated the txt file.
Hi DerKammi ,
Looks like your Github post comes up top of the list when I search 'FY6600' now .
With a bit of luck it should draw in a few more people interested in our cause and with it maybe some extra inspiration and technical wizardry too .
But with an external linear 5V psu you can easily omit the known high voltage to earth problem with the JDS6600.
Not sure if that is true. An external switched PSU has the same problem as an internal one. The only thing is you can more easily switch out a cheap one for a better one, but they both will have leakage through the mandatory capacitor.
That is why I wrote an external LINEAR psu. I replaced the external smpsu with a linear one and everything is fine.
Ah, sorry yes, I missed the linear part.
Hi DerKammi ,
Looks like your Github post comes up top of the list when I search 'FY6600' now .
With a bit of luck it should draw in a few more people interested in our cause and with it maybe some extra inspiration and technical wizardry too .
So it does, that is quick. Would be great if we could create that momentum.
Despite the small "bugs" the device has it is worth the price to make some killer custom open source firmware.
I only that FPGA could be... ahh well dreams are for the keeping.
Sure. All my "working" notes are in an excel file. The summary sheet is the pdf file I posted some days ago. Maybe not the best format to put on a github... but I suppose for the moment beeing you can post the pdf file as is...
For the code you can post the FPGA Library (FPGA.c) plus a module I used for testing puposes (Tests.c surprisingly ) This might help understand the FPGA library which should already be understandable by itself. At least I hope
The next module I will post will be the serial protocol which will be less interesting as already documented by Feeltech. Maybe you could also post the original document from Feeltech ...
Can I have the .h files as well? want to have a go with my fresh blue pill boards on Mark his generator this evening.
I have made and change a linear PSU for my FeelTech FY6600 .
Well somebody had a busy weekend
Nicely done in the limited space.
I have made and change a linear PSU for my FeelTech FY6600 .
Nice job Lanvernazal, you did it well.
On my side, because I am a lazy man, my choice was to make some mods on the stock one.
Upgrading some capacitors, switching diodes, earthing the FY6600 with an appropriate socket for the mains input.
Et voila !!
For the German residents, a cheap one (no connection with the seller):
Biete Meßgeräte
(Anzeigen-Nr.: 514605) 2-Kanal DDS Signalgenerator Feeltech FY6600-60
Ich biete einen unbenutzten Signalgenerator vom Typ FY6600 an. Es handelt sich um die 60MHz-Ausführung. Informationen dazu finden sich reichlich im Internet. Das Gerät wurde nur einmal zum Funktionstest eingeschaltet. Es arbeitet mit der Firmware V3.2. Preis 70 Euro inkl. Versand innerhalb von DL.
9.2.18 - 11:06 Uhr Karsten Hansky - DL3HRT
dl3hrt@aatis.de
Cheers,
DC1MC
Has anyone who has gone to a linear PSU done any measurements that demonstrate improvements to stability, distortion, jitter, amplitude vs frequency or any other characteristics? I am mulling the possibility but haven't seen enough justification yet. My limit has been grounding the SMPS common to stop it biting.
I'm waiting for a 15v / 9v R-core transformer to be delivered, then I'll be doing mine - more out of curiosity than anything else, as I'm not convinced it will make much difference - then I'll give you my thoughts. I'll be happy if it reduces the jitter somewhat.
Dave
Thanks Dave, that should be a useful addition to the knowledge bank.
Will you be doing identical before and after tests?
Has anyone who has gone to a linear PSU done any measurements that demonstrate improvements to stability, distortion, jitter, amplitude vs frequency or any other characteristics? I am mulling the possibility but haven't seen enough justification yet. My limit has been grounding the SMPS common to stop it biting.
Well, aside the mains leakage protection a linear and good stabilized power supply will do jack against jitter (digital issue), frequency stability (oscillator) and amplitude vs frequency.
It will do a lot of good on: distortion factor of high signal levels under load, noise factor and make the amplitude more predictable. I mean if you connect a 1Mohm scope probe, you won't see too much of a difference, if you connect a 50ohm spectrum analyzer input and play a bit with the levels you'll see the difference immediately, also one can connect a scope with a 50 input and put the triangular waveform.
Someone here did the measurement and the output voltage of the power supply swings in between 12 to 17V !! volts, in different load and frequency conditions, this can't be healthy for the analogue block.
Cheers,
DC1MC
I don't see the firmware specified anywhere when ordering one. Any way to be sure I get the latest 3.2 firmware?
Order the Kuman-branded version on Amazon (ASIN:
B074TCVPVG). It's coming directly from them ("kumanshop") and as of mid-January their stock had v3.2. Boot screen identifies it as a FY6600. They're a Prime seller, so if it disappoints just send it back. Probably pricier than eBay though.
I ordered one from eBay about 10 days ago and it came with 3.2.1 firmware
3.2.1 ?!?!
A new revision ?
Looks like 3.2.1 to me...
Hmmm, what they did corrected this time, maybe this endless stupid repetitions of all parameters re-programming when you just change one.