Products > Test Equipment
RD JDS6600 25MHz 2-Channel DDS AW Function Signal Generator
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bugi:
Afaik, the most common "symbol" for peak to peak voltage is "Vpp" (without the t between p's). The amplitude vs Vpp is one of the quirks I have planned to print on a sticker to be on top of the unit.

tjones99 noticed the amplitude/voltage error earlier, but there hasn't be any hints how to adjust it so far.
EmbeddedRT:

--- Quote from: RD Tech on October 27, 2017, 06:10:36 am ---
--- Quote from: xzswq21 on October 26, 2017, 10:47:08 pm ---Hello
I want to buy one 60MHz function generator
but what's the difference between Feleltech, Kuman, JDS, Koolrtron 60MHz function generators?!!
for example I found the below device:
https://www.amazon.com/gp/product/B07596133Q/ref=ask_ql_qh_dp_hza

I don't know what I should do!
actually I should tune my medical board (Step response and Frequency response) and I need such a device   :bullshit:

Best Regards

--- End quote ---
Hi friend
thank you for your message and your question
about Kuman, JDS, Koolrtron, they are from same designer . our engineer and Minghe engineer design the JDS6600. other Kuman and Koolrtron should use the brand.  JDS6600 is newest version.
about the link, it is also new . it is a hand-held, JDS6600 is desktop. data and function are same

--- End quote ---

----------------------

RD Tech - I have, regrettably, already ordered a 30Mhz "koolertron" off Amazon before finding this forum.  There are a few posts with some issues like phase changes when running 2 channels, and the unit powering off by itself after a while.

Is there anyway to determine how old the HW or firmware or SW is in mine - to determine if its worth returning the unit in order to buy one from 'aliexpress' that has more recent updates?

Already found out that mine shut itself off after a while the first time I powered it on and so I'm letting it run again to see if it does that on a regular basis. 

That is going to be a problem if I can't let it run continuously - is that a bug that has been fixed in a newer version?  If so can mine be updated or do I have to return it and buy a newer issued unit?

Thanks for the help and all your info provided to the forum on your product!

ultrarunner2018:
I saw a YouTube vid of JDS6600 teardown, and it was said that the unit has a problem where it will spontaneously shut down after 10-20 minutes of operation.
Is this still a problem with these units? Or did the YouTuber get a bad unit?

I am very hesitant to purchase this unit, based on what I have read on the first page of this thread (sorry, I haven't had time to read the whole thread yet, but will keep on reading) in spite of its low cost and good quality (if questionable), so maybe I will go with a vintage HP or Agilent on Ebay...
I don't need laboratory specs, but I want something that isn't going to annoy and frustrate me to the point that I put it on a shelf somewhere to collect dust while I buy that vintage Ebay item after all... or perhaps just save a bit more $$ and get a Siglent or Rigol model.
Sylvi:
Hi Guys

You can get the JDS6600 in a different physical form as the JDS2900. Here is a link to Aliexpress, which is having a sale on Nov.11 (both are on sale for the same price):

https://www.aliexpress.com/item/JUNTEK-JDS2900-60M-60MHZ-Signal-Generator-Digital-Control-Dual-channel-DDS-Function-Signal-Generator-frequency-meter/32867045945.html?spm=2114.10010108.100009.4.e23747ae4Z9x43&gps-id=pcDetailLeftTopSell&scm=1007.13482.95643.0&scm_id=1007.13482.95643.0&scm-url=1007.13482.95643.0&pvid=c5308da1-6feb-41d0-85e1-2c87c5a3e620

If you look at the different views of this package, there is a lot of ventilation at each end, so maybe the turning-off problem was just thermal?

The rated sine wave 20-20kHz THD is 0.8% but maybe it is actually lower? One would hope.

I looked at OWON's AWGs and the AG1022 is rated at 0.2% and is about twice the price of the JDS. The AG has more memory.

OWON has their XDS-series which is rated at 0.05% sine THD 20-20kHz. I have not seen a price for this one, but stylistically it matches their XDS scopse.

All of the above are 14-bit
kevinateev:
Guys, so i bit the bullet on this one and just posted a command line program for mac to control these devices.  I primarily wanted it for uploading arbitrary waveforms but it will also be handy for defining different configurations.

https://github.com/kpishere/mhs52xxA

Protocol is defined there too.
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