Author Topic: Experience with DSO 2074G  (Read 4504 times)

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Offline egonotto

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Experience with DSO 2074G
« on: April 26, 2017, 07:08:09 pm »
Hello,

I got a used DSO 2074G.

It is a 4 channel 70 MHz USB Oscilloscope.

Vertikal-sensitivity   10 mV/div - 5 V/div
Samplingrate           200MS/s (? pro channel ?)

It has also an arbitrary wave generator with
200 MS/s 12 bit and 4KS

The 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 Discovery
I 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 should
report 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 seems
it is 100MS/s
In the picture 10ns_ch 1 2 3.png channel 4 is off and as seems now we have

200MS/s

To be continued
egonotto

 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #1 on: April 27, 2017, 07:44:38 pm »
Hello,

it seems that the DSO 2074G is from Hantek (DSO3064A ?)

The buffer length per channel can be
10 kS
1   MS
2   MS
4   MS
8   MS
12 MS
16 MS

The usage is not easy to see.

If you want have 2MS with a sample rate of 10MS/s you have chose 100us/div
and 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 information :-\

The file look like:

#CHANNEL:CH3
#CLOCK=100uS
#SIZE=2097152
#UNITS:V

1.0039
0.4392
-0.1255
-0.7216
-1.2549
-1.6314
-1.8824
-1.9451
-1.8196
-1.5059
-1.0667
-0.5020
0.0941
0.6902
1.1922
1.6000
1.8196
1.8824
1.7569
1.4431
1.0039
0.4392
-0.1255
.....

start.png shows the associated display of the scope


To be continued
egonotto

 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #2 on: April 28, 2017, 09:07:59 pm »
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 continued
egonotto
« Last Edit: April 28, 2017, 09:11:52 pm by egonotto »
 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #3 on: May 10, 2017, 02:12:36 pm »
Hello,


the imput amplifier are not good.

An offset affects the curve :(

To be continued
egonotto
« Last Edit: May 10, 2017, 02:14:25 pm by egonotto »
 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #4 on: May 13, 2017, 09:30:35 am »
Hello,

some more pictures.

At 1kHz square and larger amplitude it shows a disturbed waveform.
At 1MHz square it looks ok.


To be continued
egonotto

 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #5 on: May 14, 2017, 07:12:55 pm »
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 it :(

To be continued
egonotto


 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #6 on: May 14, 2017, 07:50:27 pm »
Hello,

the generator of the DSO 2074G has also a AM function
But look at the picture :(

To be continued
egonotto
 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #7 on: May 14, 2017, 08:08:18 pm »
Hello,

the AM function of the DSO 2074G sometimes work :)

To be continued
egonotto
 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #8 on: May 22, 2017, 01:39:43 pm »
Hello,

the risetime with only one channel on and with 2 channels on.
100MS/s is far too low :(

The signal is from RIGOL DS2072 trigger out with risetime shorter than 1.5ns

The same signal with a PicoScope 5243A (official a 100MHz scope)

To be continued
egonotto
« Last Edit: May 22, 2017, 02:04:58 pm by egonotto »
 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #9 on: June 10, 2017, 06:18:16 pm »
Hello,

now a x-y picture.

The contrast is bad :(

To be continued
egonotto
 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #10 on: June 24, 2017, 09:59:48 pm »
Hello,

the DSO 2074G can trigger from all active channels with individual timebase

To be continued
egonotto
 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #11 on: August 01, 2017, 02:54:42 pm »
Hello,

the DSO 2074G has a frequency counter.

But for low frequency he is bad :(



To be continued
egonotto
 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #12 on: October 10, 2017, 04:58:47 am »
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/div


To be continued
egonotto

 

Offline egonotto

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Re: Experience with DSO 2074G
« Reply #13 on: October 25, 2017, 04:17:53 pm »
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 continued
egonotto
 

Offline MrW0lf

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Re: Experience with DSO 2074G
« Reply #14 on: October 26, 2017, 07:17:00 am »
I ask me is the DSO 2074G a scope or is it a adventure game?

Scope working wrong is happy thing for hobbyist! Any time lacking inspiration what project to do next you can try to sneak around scope limitations :-/O
 


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