Products > Test Equipment
Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see!
smgvbest:
--- Quote from: robert_ on June 24, 2015, 11:00:30 pm ---Ok, looks like the failed calibration is to blame.
Did a quick and dirty cal of Ch2 again, and now it looks much better. I dont know why it crashed on the first attempt.
Amplitude is surprisingly stable even up to 100Mhz, maybe -2db. Flatness is so-so but probably caused by my QaD Cal. I could do much better with some more time and motivation (and using my LeCroy 9354 in my main lab instead of the old 9304 here).
--- End quote ---
@robert
Have you run a selftest on it? I'd be curious if you get the same zoom failure I get as you have a slightly newer version of the firmware.
Could you run the selftest and let me know??
robert_:
Yes, zoom unit 1 still fails on both channels.
smgvbest:
Thank you,
I wonder what they fixed in your release. if anything
fremen67:
--- Quote from: robert_ on June 24, 2015, 10:16:55 pm ---Im having some really bad effects after the upgrade, namely at any frequency beyond 5Mhz, the amplitude goes nuts.
Ch1: looks right below 1V,above that it jumps to 22V
Ch2: about 6x the value set, above 1V (till 20V) fixed 22V
Adding offset also causes total f..up.
With sweep, the amplitude stays stable IF the frequency is set to max. 5Mhz before turning on sweep.
Any idea what causes that, and how to fix it? Some sort of countermeasure?
At the moment, i can just downgrade it again to avoid breaking everything :(
Just remember that i tried to do the DC calibration, and it decided to reboot after a few values. Maybe related... Didnt check the amplitude flatness before that, so i dont know if it ever worked.
PCB 1004.1
SW 1.00.3
FPGA 30
Keyboard 3
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Hi Robert,
You seem to have the latest HW (PCB 1004.1). I think I missed something... What sw version did you have before the upgrade : 1.00.x(yymmdd.0) ? What version exactly do you have now after the upgrade 1.00.3(yymmdd.0)?... and where did you get it from?
If you encounter a problem, performing a complete calibration after an upgrade is the first thing you have to try.
fremen67:
--- Quote from: robert_ on June 25, 2015, 07:11:48 am ---Yes, zoom unit 1 still fails on both channels.
--- End quote ---
Failed also on mine before a complete calibration. If you have some time, try at least on one channel...
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