| Products > Test Equipment |
| New Hantek DSO2X1X models? |
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| Stealth_Fighter:
Hello. I purchased a new oscilloscope DSO2C10, firmware 3205 - after purchase I backed it up (with DSO Flash) and installed the mod 2D15. He worked for 20 days. Yesterday, when analyzing I2C (3.3V) signals, it stopped responding to buttons. The buttons continue to beep when pressed. I read earlier about the device freezing due to overheating, so I turned off the oscilloscope... But after cooling for 12 hours, everything is the same - it turns on, initializes, test blinks and that's it... Sometimes (at the moment of switching on) I manage to press a button - then I can go to the menu and perform actions within the menu for a long time, after exiting the menu there is no reaction. The buttons continue to beep when pressed. When connecting via USB with the standard program, there is no connection, but there is a USB icon on the oscilloscope... Tell me, please, which way to look? Thank you. |
| Aldo22:
I know I may be a bit overcautious, but this is the first time I've to deal with an *.upk file. I want to run the backup builder. In all the descriptions I read "Run system update". But I don't have anything that says that. I have a menu item "Update Firmware". Is that it? Sorry, I know it sounds ridiculous, but I don't want to make a mistake before I have backed up everything. |
| DavidAlfa:
Yes! :-+ |
| Aldo22:
--- Quote from: DavidAlfa on November 24, 2023, 12:58:07 pm ---Yes! :-+ --- End quote --- Thank you very much! That worked perfectly! The AWG is now also working. :-+ Edit: So, now I think I'm done with the setup and backups for the time being. Overclocking, factory reset daemon, fonts.... all done. You can tell it's not a professional tool, but I find it quite exciting for the price. The built-in AWG makes a very stable and nice 10MHz square wave. I like it. |
| Aldo22:
I did a few tests with my new Hantek. Of course the model is no longer brand new, but perhaps there have been improvements compared to previous versions? There were complaints about the noise level. I can't find anything special about mine. At 5mV/div I see almost no noise and at 2mv/div I can see that it is alive. ;) For me it is not a "show-stopper". (See attached image noise5mV.png, noise2mV.png) The cheap device doesn't fail even at frequencies that are much higher than the bandwidth. It jitters and fluctuates and the amplitude drops, but it doesn't show any "fantasy frequencies". See 200Mhz, 250Mhz from TinySA. (attached image 200Mhz.png, 250Mhz.png) That's impressive! I also found most of the measurements OK for an oscilloscope. I have the following results with the tools at my disposal. 1kHz Square Wave: 5V -> 4.96Vpp 2V -> 2.08Vpp 1V -> 1.04Vpp 500mV -> 504mVpp 100mV -> 104mVpp 50mV -> 52mVpp 40mV -> 39mVpp 10mV -> 10mVpp 5mV -> 4.96mVpp (See attached Image 5mV.png, that's with 50Ohm Load Resistor, so half of it) Signal from Si5351A with descending frequencies. Because the amplitude is not adjustable, I used a 20dB attenuator. 162MHz -> 610mVpp 100MHz -> 620mVpp 80MHz 560mVpp 50MHz -> 570mVpp 30MHz -> 540mVpp 10MHz -> 538mVpp 1MHz -> 516mVpp The signal of course goes from square wave to sine wave above 50Mhz, but the measurements don't seem shockingly deviating to me. What I really don't understand is the amplitude measurement with heavy ripple/overshoot. Actually the Si5351A should output 3.3 volts amplitude. The measurement with the Hantek shows a heavy overshoot (See attached image VAmp.png) I don't think that's a problem per-se, but the amplitude (Vamp) should be much lower than the Vpp? Visually it's correct too, but the specified measurement value (Vamp) isn't correct? If you subtract 1.2 volts, it would be better, right? Strangely enough, my even cheaper Zeeweii seems closer to reality. The attached Image shows exactly the same input signal. (See zeeweii.png) Is it a (another) bug? |
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