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| Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see! |
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| fremen67:
--- Quote from: smgvbest on March 07, 2015, 12:58:27 am ---one comment would be if possible make it so the user could enter thier SCPI commands into a dialog so maybe it could support more scopes and maybe a DMM. I have a Rigol DM3068 I could test with for you. --- End quote --- Thank you for your comments. Generic support for new scopes includes SCPI commands modification but also horizontal and vertical scale calculation modification, statistical functions modification,...plus the SCPI commands may also include parameters which are not always at the same place in the commands. That's possible but will require some time to do it. It may be faster to include support for a selection of well distributed scopes (I will include also support for MSO/DS2000A as Flatlander adapted the tool for his MSO2302A). Support for DMM should be easier as it is quite common that SCPI enabled DMM have support compatibility modes with older DMM (with HP 34401a for example). I was trying to buy a used HP 34401a but I find them overpriced in europe. For the same price I could buy a new Rigol 3058E or a Siglent SDM3055. As soon as I have such a DMM, I will include the DMM support in the calibration tool and will come back to you for testing. I may pull the trigger for a SDM3055 because of the large display but I am waiting for a the upcoming review on the signal path blog. |
| fremen67:
--- Quote from: markone on March 07, 2015, 01:32:40 am ---UPDATE : i just completed a manual calibration round for channel one (a huge PITA at best), now self test is GO ! --- End quote --- That's a good news! --- Quote from: markone on March 07, 2015, 01:32:40 am ---@fremen67 : 67 is your year of birth ? --- End quote --- Not far :) but no it's the code number of the area where I live in France (67 = Bas-Rhin - Alsace) |
| fremen67:
--- Quote from: Bryan on March 07, 2015, 08:10:11 pm ---Curious as if the above hack will still work with the current HDG2002B models for sale. --- End quote --- At least it was still the case last month ... https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg600782/#msg600782 |
| smgvbest:
Hi I got a pc setup to run the script and after making the change for 64bit it ran ok. Calibrated both channels and it is doing better but it does still fail that stupid zoom unit test on mine. One thing I notices that was strange it right at 98Mhz I hear it kick in a relay and I get a 482mV offset added in. I can take it out on the scope with AC coupling but in use that changes my signal. not sure where it came from and I don't recall it before calibrating but then again I don't know if I ever had it in the 2V range before Script worked great though from what I can tell. Saved allot of time and hassle |
| fremen67:
--- Quote from: smgvbest on March 08, 2015, 07:16:14 am ---Hi I got a pc setup to run the script and after making the change for 64bit it ran ok. Calibrated both channels and it is doing better but it does still fail that stupid zoom unit test on mine. One thing I notices that was strange it right at 98Mhz I hear it kick in a relay and I get a 482mV offset added in. I can take it out on the scope with AC coupling but in use that changes my signal. not sure where it came from and I don't recall it before calibrating but then again I don't know if I ever had it in the 2V range before Script worked great though from what I can tell. Saved allot of time and hassle --- End quote --- Do you have the offset problem on the channel which fails the selftest only? This offset could be the reason of the selftest failure then. The relay which kicks in just activate an amplifier stage (x4 or x5). So you may have a problem with one amplifier stage... I PMed Bugdozer who has the same hardware as yours to know wether he still has this selftest problem or not after calibration. https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg601354/#msg601354 I finally found a HP34401A for a reasonable price so I will update the calibration tool as soon as I receive it. |
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