Experience with DSO 2074G - Page 1
Forum section: electronics / testgear

author: egonotto
author_rank: Super Contributor
timestamp: April 26, 2017, 07:08:09 pm
content: Hello,I got a used DSO 2074G.It is a 4 channel 70 MHz USB Oscilloscope.Vertikal-sensitivity 10 mV/div - 5 V/divSamplingrate 200MS/s (? pro channel ?)It has also an arbitrary wave generator with200 MS/s 12 bit and 4KSThe PC-Programm is frugal.I have few crashes in the last 24h.Installing the driver was not easy for me.On a USB-hub which I use for some PicoScopes and Analog DiscoveryI was not able to got the driver working.On a USB3 hub it works now.As I don't found much about this scope on internet I think I shouldreport my experience here in the next days.First question: Are the 200MS/s for each channel?Look at the picture 10ns_ch 1 2 3 4.png. All 4 channel are on and it seemsit is 100MS/sIn the picture 10ns_ch 1 2 3.png channel 4 is off and as seems now we have200MS/sTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: April 27, 2017, 07:44:38 pm
content: Hello,it seems that the DSO 2074G is from Hantek (DSO3064A ?)The buffer length per channel can be10 kS1 MS2 MS4 MS8 MS12 MS16 MSThe usage is not easy to see.If you want have 2MS with a sample rate of 10MS/s you have chose 100us/divand buffer length 2MS. Than you get 200ms.You can that data save to a txt-file. But change the time/div not, because this comes in the header of the file. If you change the time/div than you have this wrong in the txt-file and you lose the time informationThe file look like:#CHANNEL:CH3#CLOCK=100uS#SIZE=2097152#UNITS:V1.00390.4392-0.1255-0.7216-1.2549-1.6314-1.8824-1.9451-1.8196-1.5059-1.0667-0.50200.09410.69021.19221.60001.81961.88241.75691.44311.00390.4392-0.1255.....start.png shows the associated display of the scopeTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: April 28, 2017, 09:07:59 pm
content: Hello,now I try the build in generator with a 10 MHz square.It has much jitter as you can see.With sine you got no visible jitter.To be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: May 10, 2017, 02:12:36 pm
content: Hello,the imput amplifier are not good.An offset affects the curveTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: May 13, 2017, 09:30:35 am
content: Hello,some more pictures.At 1kHz square and larger amplitude it shows a disturbed waveform.At 1MHz square it looks ok.To be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: May 14, 2017, 07:12:55 pm
content: Hello,the generator of the DSO 2074G has a sweep function, if you choose sinus.But there a spikes and therefore you can not use itTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: May 14, 2017, 07:50:27 pm
content: Hello,the generator of the DSO 2074G has also a AM functionBut look at the pictureTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: May 14, 2017, 08:08:18 pm
content: Hello,the AM function of the DSO 2074G sometimes workTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: May 22, 2017, 01:39:43 pm
content: Hello,the risetime with only one channel on and with 2 channels on.100MS/s is far too lowThe signal is from RIGOL DS2072 trigger out with risetime shorter than 1.5nsThe same signal with a PicoScope 5243A (official a 100MHz scope)To be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: June 10, 2017, 06:18:16 pm
content: Hello,now a x-y picture.The contrast is badTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: June 24, 2017, 09:59:48 pm
content: Hello,the DSO 2074G can trigger from all active channels with individual timebaseTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: August 01, 2017, 02:54:42 pm
content: Hello,the DSO 2074G has a frequency counter.But for low frequency he is badTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: October 10, 2017, 04:58:47 am
content: Hello,my DSO 2074G problem with the input impedance.The signal is with a 10:1 probe.The same signal with 100mV/div and 50mV/divTo be continuedegonotto

author: egonotto
author_rank: Super Contributor
timestamp: October 25, 2017, 04:17:53 pm
content: Hello,my DSO 2074G has problem with the sync of the generator.In DSO_2074G_arb.jpg you see an arbitrary waveform I have defined.In DSO_2074G_sync.jpg you see the waveform (green) and the sync out(yellow) in the scope.I ask me is the DSO 2074G a scope or is it a adventure game?To be continuedegonotto

author: MrW0lf
author_rank: Frequent Contributor
timestamp: October 26, 2017, 07:17:00 am
content: Quote from: egonotto on October 25, 2017, 04:17:53 pmScope working wrong is happy thing for hobbyist! Any time lacking inspiration what project to do next you can try to sneak around scope limitations