Feeltech FY6900 60MHz Arbitrary Function Generator Tryout
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- Опубликовано: 28 июл 2024
- Taking a look at the FeelTech FY6900 Function Generator from Banggood.
FY6900 Dual Channel DDS Function Arbitrary Waveform Signal Generator 60MHZ Affiliate link:
www.banggood.com/custlink/vGK...
Index:
0:00 Intro
2:48 Test Setup
3:55 Max peak-peak voltage test to 60 MHz
8:50 Duty cycle range
10:04 Phase adjust
10:52 Frequency meter/counter
11:22 Firmware glitch on measured frequency
12:27 Burst mode output
13:17 Modulation skim-over
13:32 Sweep mode
14:30 DC Offset Adjust +/- 12V
14:40 Output stage switching above 5V or below 0.501V
16:33 Higher freq. waveforms
19:05 USB Serial Control from com terminal
21:07 Conclusion
This cost effective little function generator makes a good entry level workbench addition.
There are 2 independent outputs plus a frequency meter and counter.
With built in arbitrary waveforms and the ability to download custom user generated patterns over USB, this generator can output up to 24 volts p-p up to 20MHz, or 5 volts p-p up to 60 MHz.
The unit can be controlled from a PC app or text commands over serial USB UART, allowing for automated control in test setups.
It's not intended to be a top of the line unit and it does have some firmware glitches (as of version 1.3.1, the frequency reported on the frequency meter may not always be correct) but for the price, as a learning instrument or a backup unit, it can have its place in the work shop.
FY6900 Page (Manuals, PC software etc, need to fumble around)
en.feelelec.com/index.php?case...
en.feelelec.com/index.php?case...
EEVBlog forum thread
www.eevblog.com/forum/testgea...
FY6900 Technical Details (Summary of various teardowns and investigations) www.radiomuseum.org/forum/dds...
Oscilloscope bandwidth info
siglentna.com/operating-tip/d...
Equipment I regularly use (support the channel by shopping through these affiliate links - I may earn a small commission and it doesn't cost you extra):
Mustool MT315 Digital Microscope www.banggood.com/custlink/KKv...
946C Solder Hot Plate 200mm x 200mm www.banggood.com/custlink/K3D...
ANENG AN8008 True RMS Multimeter www.banggood.com/custlink/KKD...
Minleaf NPS3010W Power Supply www.banggood.com/custlink/KKK...
FY6900 Dual Channel 60MHZ Signal Generator www.banggood.com/custlink/vGK...
Siglent SDS1104X-E 100Mhz Digital Oscilloscope 4 Channels Standard decoder
Amazon.com: amzn.to/36fH1ui
Amazon.ca: amzn.to/36fNWUc
Support me on Patreon: / gadgetreboot
LBRY: lbry.tv/@GadgetReboot 
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Excellent review. I have one in my shopping cart and just needed a review as complete as yours to pull the trigger. Great work
I have one in my shopping cart now, after a year does it still work?
@@mik310s yes it's working great. I don't use it that often but it's worked reliably everytime I fire it up
Thanks pal, just ordered one for £43, bargain for what you get
You gotta be clueless if you think this is a good review..this is lowest common nominator of social media greasing, and a video that dont even take one look at all the features it carries on the backsokets.
good review.!. are you being ironic?.
Fine review thank you. I'm interested in restoring old tube radios. I need the Modulation function for alignment.
Nice review video
Great review!
Thanks!
Please create your presence ALSO on alternative video platforms such as
Bitchute, Rumble, Odysee - since many users such as myself have begun
migration away from utube. I like your work.
I created a Bitchute account a while ago but I'm not sure if I did it correctly. I have been on LBRY since last summer. Haven't looked into Rumble.
I just replaced mine with the 9800 version.
I still have no c,lue as to what I’m doing, but at least I can use it to generate audio tones
and RF . The only dilemma is that the 9800 is less precise on the higher frequencies.
Above 10-15 MHz, it tends to be off a bit.
Not checked with a frequency counter (mine is buried in my moving boxes).
I checked the RF signals generated with my spectrum analyzer.
(HP 8591c)
Thanks for your videos
Is it possible for someone to share the PC software? I had to uninstall mine and I cannot find it online anymore .. 😐
I'm a beginner and I'm curious why are you using that T BNC splitter with the 50 ohm termination. What are the advantages?
Here's some info on using termination www.iitk.ac.in/ibc/BNC_T.pdf The signal generator has an output impedance of 50 ohms (a series 50 ohm resistor) and at "low" frequencies it doesn't matter. When frequency increases high enough that the wiring connections and length of cable etc act as a transmission line, in order to maintain signal integrity, the wiring needs to have the same characteristic 50 ohm impedance of the source signal, and the end of the cable (scope input) needs to be terminated with the 50 ohm characteristic impedance so the system is matched and the transmission line doesn't have signals reflecting back and forth, causing disturbances in the signal, corrupting data, causing voltage spikes etc.
@@GadgetReboot thanks for explaining. so I guess this is not required for those scopes which already have 50 ohm at input from factory
@@andidotro Yeah if those scopes are switched to 50 ohm input mode, that's better than using external termination on a 1meg or higher input scope.
@@GadgetReboot You said this wasn't your main go to option for a generator. What are you using now as primary?
@@andidotro 3 years ago I bought a Rigol DG1022Z (25 MHz 2 channel) www.rigolna.com/products/waveform-generators/dg1000z/
because I only had the old old analog 2 MHz single channel with the knobs and buttons so it was a big upgrade to be able to just enter what I wanted and have it work, plus the many waveform types and other features.
I just wanted something somewhat reputable and affordable although it was over $300 and if I were doing it again now and money were tight, the lower cost Chinese stuff works well enough for home use even if it feels like using a toy.
I want one. I have zero idea what I would do with it, but still. :)
That's how I ended up with most of what I have. But the USB control makes me want this type of unit most of all.
Major drawback of FY6900 generator is that it is not based on hardware DDS, but relies on DDS implementation in FPGA. While providing more options, it runs on 120MHz clock, while DDS chips from Analog devices run on 300-900MHz internal clock, resulting in much smaller jitter. The unit is ok for low frequency
what generator do you recommend on this case?
@@andidotro All cases are different. The FY6900 is good budget device for
If you want to play with automation try my program TestController: www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/
It can control and log this generator and many other devices at the same time.
I opened the post to check it out. That may be useful when I get a siglent scope in a few days (whatever the shipping delay ends up being)
Sometimes the software can also be a useful user interface, at least for the simple functions. This includes defining shortcuts for selecting different setups.
For doing a frequency response curve you need the generator and a scope or wide band voltmeter, then TestController can do the sweep, record the curves and show and show it. You can do both lin and log (TC can also do that with a sound card at either or both ends).
@@henrikjensen3278 I'd like to be able to do some bode plotting. I think I saw it in the siglent scope specs but I wasn't sure if I needed a special interface or user license, but I'll get it going one way or other
With TC amplitude is easy, but I do not believe phase is supported (All scope definitions are done by user, not be me).
Log scales are very easy to do with any device.
If you look in the EEVBLOG thread you will see a guy doing frequency plots with TC and he was the reason for some improvements.