Products > Test Equipment
Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see!
markone:
Hello,
just put my hands on HDG2002B purchased on ebay (PCB 1004, SW 1.00.2, FPGA 20, KB 3) and i have important problems like :
- FM modulation does not work, playing with parameters often let the device to BSOD
- sometimes BSODs are followed with a screen asking confirmation for a recovery to default image (that clears the config file hacking)
- no way to maintain screen intensity parameter to the chosen value, it changes continuously
- no way to obtain a correct "last status" recovered at boot time
- gorgeous jitter plus short glitch (about 20ns) before the rising edge (depending on the signal) on sync signal output
- rust on internal shielding edges
I'm wondering if i got a lemon or if this instrument is the pile of **** that it seems to be is not ready to be sold at current FW development stage.
flatlander:
Quote from: Stevie1966 on September 29, 2014, 01:34:30 PM
I have resolved this problem 3 days ago.
You can try the following.
Take away the capacitor C231 and C208. Then change L25 and L17 to 0 ohm.
Wish you luck. ;D
--- End quote ---
On my board (PCB: 1004) these changes, to remove excessive ringing from the outputs, were already done ex factory. They also removed C209 and C232.
Richard_L:
Further to markone's post - is anyone following this thread actually managing to use the Hantek without it freezing or BSODding on a regular basis? From reading through all the posts, it does seem prone to tripping over its own shoelaces when basic waveform parameters are changed, even without the software hack being applied or the hardware being modified.
Also, and it's probably nothing, but from looking at the specs of the HDG20XXB range, there are some parameters that don't improve incrementally with each model - something which might be expected with a pure software implementation of specification limitation, they're bunched into pairs instead, which might perhaps indicate aggregating a few small hardware changes as the models get more expensive?
http://www.hantek.com/en/ProductDetail_149.html
on the parameters tab... see the pairing on:
Frequency characteristic --> arb.
and
Pulse --> pulse
If there's anythingto this, it would suggest that the 20MHz model is the first one that's got tweaked hardware.
I'm torn between buying the HDG2002B and one of the Siglent SDG10XX series. Despite the higher price and lower spec of the Siglents, I'm erring towards one of those because of their apparent greater reliability. The Shenzen & Hong Kong based ebay sellers of the Hanteks say they offer a 3 year warranty but I'm not sure I'd like to test that in a years time.
markone:
--- Quote from: Richard_L on November 22, 2014, 11:47:11 am ---The Shenzen & Hong Kong based ebay sellers of the Hanteks say they offer a 3 year warranty
--- End quote ---
mmmh, i wouldn't bet on it ...
andrija:
--- Quote from: Richard_L on November 22, 2014, 11:47:11 am ---Further to markone's post - is anyone following this thread actually managing to use the Hantek without it freezing or BSODding on a regular basis? From reading through all the posts, it does seem prone to tripping over its own shoelaces when basic waveform parameters are changed, even without the software hack being applied or the hardware being modified.
--- End quote ---
I referred to this as a toy when speaking to my friends and I still do. I certainly had my own share of BSODs but the device is useable. I can't trust its amplitude much after calibrating it and the non-sine waveform is not all that clean after a few MHz so I'd say, think of it as a much better alternative to those cheap DDS generators from EBay. I would certainly go for Siglent if you want something more reliable. I've been trying to buy a used HP/Agilent as an outdated but reliable and precise reference function gen but for some reason prices on EBay have soared in the last two months to laughable levels - you may as well buy a Rigol 4k series for the price they want for those old HPs. I wonder why - did someone do a popular video on one of these recently? Anyhow, if you want a toy this Hantek is fun, if you want something that you can rely on and not fuss over, get something else.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version