Products > Test Equipment
Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see!
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Cyber7:
@marabut: There's still plenty of old LMX5080 stock in Asia. You can find it on Alibaba, but my company doesn't trade on their supply xchange. I have found it at some distros I deal with, but their minimum is often >$300USD. I got a quote from one vendor at $50 each! :o I have some feelers out to some of my low vol suppliers for 5-10 pcs. If I get lucky, I'd be happy to supply the part.

I sure hope my unit doesn't come with heat sinks bonded to 3 soic-8 parts with silver conductive-epoxy. Looks like a post-engr eval unit to me, otherwise they would have revised the new PCB with proper stress mounts for the heat sinks. Shipping stress alone could rip the parts and pads right off the PCB...ouch! Frankly they should have redesigned the Faraday cans for airflow, lowered the profile above those 3 ICs and placed thermal coupling material in between. Even old C-64's and Apple II's used this design.

There doens't appear to be any thermal compensation on the outputs. Perhaps the output ICs get too hot with the cans in place. It would be interesting to see thermal images of the Faraday cans after 30mins of operation. Someone posted some thermal images of the regulators on the PCB running hot (albeit without forced air from the PSU's  fan).

idpromnut:

--- Quote from: marabut on September 25, 2014, 07:08:30 pm ---
--- Quote ---Can you check (once modded) that you have the option to switch between the LF and HF counter
--- End quote ---
If there weren't "HF counter" option , I wouldn't be able to check if it works without U25 or not, right? >:D

--- End quote ---

I suppose that kinda makes sense :)
marabut:
@Cyber7: I know it is possible to order large quantity of LMX's - but it is not viable option (for me at least).  And I think that engineering eval board would have all parts populated, so probably it's rather an example of budget driven engineering.

@tinhead: how could I refuse the man who started it all... :)

Links to full sized pictures (warning: about 40 MB each!)
Top:
http://i1309.photobucket.com/albums/s629/lionhorse5/top_zps764ba714.png~original
Bottom:
http://i1309.photobucket.com/albums/s629/lionhorse5/bottom_zps7f9b67e3.png~original

Previews attached below:
ulrik:

--- Quote from: marabut on September 19, 2014, 08:50:49 pm ---Some fresh news:
-currently shipped HDG2002B have firmware version 1.00.2(140819.0) , PCB: 1004, FPGA: 12, Keyboard: 3, Kernel: Linux 3.2.35
-U25 place on PCB is not populated, so HF counter doesn't work and upgrade becomes more complicated
-system.inf is now located inside /config/root
-tcxo (or maybe OCXO?) is covered with cap / thermal insulation box

--- End quote ---

I got mine 2 days ago - and it's the very same version as marabut's. And I can confirm "upgradability" to HDG2102C regarding bandwidth  ::)  BTW: Thx to all upgrade-contributors!  :D

HowTo bandwidth upgrade:

* open case (very easy using torx)
* connect your TTL-UART next to USB connector - from USB: unsoldered, UART-TX, UART-RX; GND; 3.3V(not needed)
* use your favorite terminal prog - use setting 115200Baud,8N1
* switch on your Hantek device
* edit system.inf in /config/root (use vi-editor and change "HDG2002B" to "HDG2102C"
* then use "reboot" to restart system; done.
tinhead:

--- Quote from: marabut on September 25, 2014, 09:48:16 pm ---@tinhead: how could I refuse the man

--- End quote ---

hehe, at average, one of my wives is always "refusing"  :)


--- Quote from: marabut on September 25, 2014, 09:48:16 pm ----tcxo (or maybe OCXO?) is covered with cap / thermal insulation box

--- End quote ---

i think there is tcxo and not ocxo soldered (one can see on bottom, these 4 pins from ocxo pinout not soldered).
But if so, that box is of couse still nice to have.


--- Quote from: marabut on September 25, 2014, 09:48:16 pm ---Links to full sized pictures

--- End quote ---

cool, they nice, one can now easy compare to other models, especially these hand soldered parts, e.g. why D5 removed (near R238 / XO box), or why they soldered !2 when the P6/P7 (near usb on top) are anyway not used?
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