Products > Test Equipment

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

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fremen67:

--- Quote from: jleg on September 25, 2019, 05:55:31 pm ---
I just flashed my bricked V3.0 - worked like a charm! Thank you very much for these efforts!
Still didn't get anything from Feeltech - i owe you a beer at least  ;)

--- End quote ---

Thank a lot for the feedback!
It is still in development but what about beeing involved in testing the firmware?  ;)

fisafisa:
Hi
Very good job!
Been reading for a long time until you disappeared.
Now I am very happy to see the project back online.

Any chance of releasing the source code?
I was mulling about porting it over to either a F7 discovery board I have with touch screen
or directly to a Raspbeery pi with a large screen.

In any case
Thanks

soundtec:
I spotted some other slightly odd behaviour relating to the gate setting  and displayed frequency in measure mode , this also seemed to be having some effect on the pc softwares  stability. I also couldnt seem to get anything from the trig input on dc mode .

Please dont feel any need to rush an update on my behalf , all in its own good time will be fine ,
I have a second machine so Im quite happy to play guinea pig with the other .

Miti:

--- Quote from: fremen67 on September 22, 2019, 12:13:40 pm ---It doesn't work with a V3.3 eeprom but as I don't have a V3.3 front panel, I can't see what changed in the FP-FPGA protocol for v3.3.

--- End quote ---

Hi Fremen67 and welcome back! I surely hope that you were just busy and nothing tragic happened.

How may I help to figure out V3.3 and what do I need? My FY6600 is V3.3. I don't have a logic analyzer but I do have a Rigol DS1054Z. Probably not enough, eh?

DaveR:

--- Quote from: soundtec on September 25, 2019, 10:45:32 pm ---I spotted some other slightly odd behaviour relating to the gate setting  and displayed frequency in measure mode , this also seemed to be having some effect on the pc softwares  stability. I also couldnt seem to get anything from the trig input on dc mode .

--- End quote ---

Hi soundtec - it's getting to be just like the good old days again, isn't it?

Try this and see if you can get your Trig IN working:  use your new FremTech 6600 box to send a 20MHz sine wave to the Trig IN of your 6800, and set the amplitude to just under 5v.  It should be measured ok on the 6800 counter with DC coupling.  Now increase the frequency to 40MHz, and the 6800 counter will probably not measure it.  Increase the amplitude until the relays activate and the 6800 will measure the signal again.  Go to 50MHz and the amplitude will need to be set to about 9.1v, and at 54MHz it will need to be about 18.7V.  Mine tops out at just below 56MHz, when the 20v amplitude limit is reached (although the RMS output level is still less than 5v, so still within the stated safe input limit on the 6800).  If you've changed the op amps on your 6800 you should be able to control it with fremen's software and test the Trig IN port on the FremTech (I can't because I still haven't changed the op amps in the 6800, so can't get anywhere near enough amplitude on the signal to activate the counter at anything over about 10MHz).

If you use the front input on the 6800 you should be able to send a two-cycle sine wave from the FremTech and check the counter up to >90MHz.  I've just done this on mine, and went up to 93MHz with 17.15v amplitude set (only 6.2v pp out, 2.1v RMS), so I could probably have got another 3 or 4 MHZ out of it before I hit the 20v limit.  Fremen must have a signal generator which can produce high RMS outputs to push the counter as far as he did.

What irregularities did you spot with the gate and software stability?  I'll see if I can replicate the problem here if you give me some settings to enter.

Regards,
Dave

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