Author Topic: FeelTech FY6800 Signal Generator Free Trial  (Read 5680 times)

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Offline ikrase

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Re: FeelTech FY6800 Signal Generator Free Trial
« Reply #50 on: June 04, 2018, 10:44:31 am »
Allegedly better support, nicer buttons, less power supply trouble
 

Offline lululu

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Re: FeelTech FY6800 Signal Generator Free Trial
« Reply #51 on: June 14, 2018, 04:59:52 am »
So as far as I can see it, the FY6800 can now be purchased regularly. But the company changed its name from "Feeltech" to "FeelElec"??

Now what puzzles me a bit is that I find the FY6800 under several different brands. On Ebay I find it branded as "FeelElec", on Aliexpress you find it as "KMOON", "ZEAST" and "haoba". Are these all the same thing just shipped with a different front sticker? Or are some of these clones of the Feeltech one?

Also, I read many people had problems and even bricked their device running firmware v3.1 and earlier; so I contacted some seller of a "FeelElec FY6800" on Ebay and asked for the precise firmware version of the devices they are shipping and they told me today their firmware version was v1.6!? So are they using a new versioning scheme on this model or what?

About the output amp of the FY6800, does it work reliably on very low impedance? For instance I currently have to modulate a circuit with only 1 Ohm impedance and I wonder if I would blow up the FY6800's output amp with that circuit. I mean I see they are writing in their specs the device would run even short circuited for 60s, any real life confirmation on this one?
 

Offline brainwash

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Re: FeelTech FY6800 Signal Generator Free Trial
« Reply #52 on: June 16, 2018, 10:21:50 am »
To answer the first question, at least KKMOON is a distributor and sometimes rebadges the products. I think I got my old model from them since they fulfill Amazon (DE) orders, avoiding a time-consuming and perhaps costly trip to the customs' authority.
My old model (FY*24*) could drive 4 Ohms (speaker) loads without complaining too. For what I do, though, a 50 Ohm BNC terminator does the job. Not sure why the need for 1-Ohm loads, that's subwoofer-amplifier range.
 

Online rhb

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Re: FeelTech FY6800 Signal Generator Free Trial
« Reply #53 on: June 16, 2018, 11:28:09 am »
Allegedly better support, nicer buttons, less power supply trouble

12 days after supplying shipping addresses (PO Box and street)  for a replacement FP board I got an email saying the addresses were incorrect.  They were not.  No explanation of why they thought that, but now they also wanted a contact number.   I'll believe they have better support when I see evidence of it.

FWIW I got so tired of dealing with it, I bought a Keysight 33622A from their eBay store.

I did *not* brick my V3.1 device.  It still works although the settings are all screwed up and the screen trashed.  It worked fine when I completed the PSU fix and ran it for a couple of hours.  I turned it off and went to bed.  The next morning when I powered it up it borked itself.  That was in November-December of last year.  Despite many efforts I am still waiting as are others.

Until they actually start delivering on customer support, I suggest avoiding like the plague.
 

Offline lululu

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Re: FeelTech FY6800 Signal Generator Free Trial
« Reply #54 on: June 17, 2018, 10:15:44 am »
To answer the first question, at least KKMOON is a distributor and sometimes rebadges the products. I think I got my old model from them since they fulfill Amazon (DE) orders, avoiding a time-consuming and perhaps costly trip to the customs' authority.
My old model (FY*24*) could drive 4 Ohms (speaker) loads without complaining too.

Sounds good! Thanks! I'll give it a try and will purchase one from the east (~25 days delivery it seems). Right now I don't see anybody selling the FY6800 nearby unfortunately.

For what I do, though, a 50 Ohm BNC terminator does the job. Not sure why the need for 1-Ohm loads, that's subwoofer-amplifier range.

Yeah not very common I know; that's a tube amp which I currently have to debug and repair which has a somewhat odd design. It has a coil with only 1 Ohm at the heart of its signal routing (between preamp and power amp section). But ... who cares about internal design details when it sounds great, period.


FWIW I got so tired of dealing with it, I bought a Keysight 33622A from their eBay store.

Mja, considering the price difference I rather give the FY6800 a try. I don't need a signal generator that often. And besides, my oscilloscope is also an Asian one which many people were complaining about, but it is running fine for me for more than 10 years without any issues so far. *fingers crossed*

I just hope the FY6800's PSU won't cause any serious signal noise issue. We will see.
 

Offline cybermaus

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Re: FeelTech FY6800 Signal Generator Free Trial
« Reply #55 on: June 18, 2018, 07:09:36 pm »
I just hope the FY6800's PSU won't cause any serious signal noise issue. We will see.

Well, if you are really running it at 1 Ohm, I think you should more worry about distortions from the drive-OpAmp than from the PSU. You are running it massively out of spec, it's anyone's guess what the waveform will do.

Maybe you should consider this: https://www.ebay.com/itm/121799023133
Not sure how good it is, but at least it is spec'ed >=1 Ohm
(its a special variant of that model, build for low impedance)

Or at the very least use this: https://www.ebay.com/itm/132112656266
Still out of spec, but a bit more in the direction you are thinking of using it.

 


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