Products > Test Equipment
Gw Instek GDS2204E (200MHz 4 channel DSO) review
System Error Message:
well you beat me to a review about it. trying to learn as much as i can with electronics.
One effective way to remove noise is to capture the wave and subtract it but this only works to a maximum of 1M memory, not available for 10M. I noticed that when you have subtract/divide the math works slower, i dont know if this is because of eliminating the noise so the wave seems to vary less or if it is actually slower. It seems that after some use the input noise gets very significant, around 2mV with nothing connected and a -0.2V deviation of voltage values. SPC doesnt fix this but i hope calibration will, i managed to get calibration started by using 2 probes and making sure ground is also connected though i will fully calibrate when i find a way to keep the 2 probes touching without any issue.
If i put the probes on a wooden surface i get other noises too but this isnt a scope issue.
I subtract input wave with probe connected before connecting so that i can see the right waveform and noise coming from what i measure.
The ability to capture 1M worth of wave and perform math with it is quite a nice feature and useful when you are comparing. I wish the scope was heavier, would make it easier to play with all the knobs and buttons.
dcarr:
Thanks for posting a very thorough review.
David
pascal_sweden:
Or why not make a video review on YouTube? If this oscilloscope is really that great, how come that there is no single video review about it on YouTube? (Besides the silly videos from the manufacturer itself)
Appreciate if you can make a video review about your brand new spanking oscilloscope! :)
What about MSO functionality? Can it be expanded with an MSO probe? How many digital channels? 8 or 16?
Which distributor did you buy it from? Is there a distributor in the Benelux?
nctnico:
I guess nobody bothered to do a video review. My problem with a video review is that I don't want to dump a longwinded piece of raw footage on Youtube. I'm quite sure I lack Dave's ability to come up with a coherent story of the cuff like he does. I would like to try and make a video but I'm skeptic about my skills to do that succesfully. I'd need a script, preparation and lots of video editing which all translate in a lot of time I don't have. The text review I posted to begin this thread took me a whopping 6 or 7 weeks to complete.
About your questions: unfortunately no MSO function although it seems the firmware could deal with it because the MSO function buttons are disabled. It appears GW Instek uses one firmware sourcecode for all their scopes which is good because if they fix a bug, they fix it for all models (unless it is model specific) and need less effort for testing. I bought my GDS-2204E from Eleshop.nl. GW Instek has a European office in the Netherlands BTW (no, I don't work there).
pascal_sweden:
That's nice to know about the European office. So it means good warranty procedures.
I am originally from Belgium, so definitely consider that as a plus.
GW-Instek used to have modular slots in the GDS2000A series. It's a pity that they took out that concept in the GDS2000E series.
But do they have an MSO model in the GDS2000E series, or is that only in the GDS2000A and GDS3000 series?
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