Electronic Engineer Discuss

Title: Why nobody Help me...????? [Print this page]

Author: Prabath Time: 2017-11-20 17:26
Title: Why nobody Help me...?????
I have posted 2 time before about my New Hantek 6074BE scope ...?

i dont see much support for 6074BE model and nobody helps me...

it has unstable triggring for even clean signals ..? and Channels show random noise..? i am suspecious that my unit might be a Clone...

Comon hantek agent contact me...?

Author: amy Time: 2017-11-21 11:13

Sir,
About the trigger problem, please give me the actual parameter of your waveform. The best give me a picture of the real waveform

Author: Prabath Time: 2017-11-21 12:22
Hi i am iATN forum member...

(World Largest Automotive repair forum)...i have chosen 6074BE model for car repairs...also to introduce the affordable 6074BE to iATN members ...but 6074BE disappointed me..

See my the videos... https://www.youtube.com/channel/UCP4BXIU7iIJkbeP6WyZZq_g

Major problems are

1) Unstable trigger....?????????

2)Random Noise in some channels 60mV to 314mV..?(this could be internal A/D noise having a relay switch instead of digital switch is also bad)

3) Too many software Bugs..

Thank you in Advance..

Author: Prabath Time: 2017-11-21 13:19

amy replied at 2017-11-21 11:13
Sir,
About the trigger problem, please give me the actual parameter of your waveform. The best gi ...

iIt was simple injector waveform engine was at idle 750RPM

Thanks....

Author: amy Time: 2017-11-21 17:07
Sir, please chenge the trigger sweep to normal to test and give me a video to study.
About the noise, in your trigger video I don't see the noise. Are you sure not any of the signals connect to CH1?

Author: Prabath Time: 2017-11-22 12:15
Hi amy...i Changed the trigger to normal still no improvement.... Here is the noise video https://www.youtube.com/watch?v=TBekYlAaqa8
Thanks..

Author: amy Time: 2017-11-22 16:20
First of all, for triggering problems, please change the trigger mode to normal, and then send us video to study.

About the measurement of the current in your video, CH2 has measured the current value of 50.2A in the following picture.
The value become 3.14A later. The signal has been lost.
[attach]1837[/attach] [attach]1839[/attach]

The DC gain accuracy is 3%*full range. You set the volt/div to 100A. The deviation is correct between ±24V.
Even if you don't input the signal, there may be the deviation.

In your another video: https://www.youtube.com/watch?v=lblcbQzKcbc
Your signal is intermittent. The measurement results are updated in real time
And when you change the vertical scale, the waveform can't be display fully.
In the following picture, the vertical scale is 200mA, the full range is only 1.6A. The maximum current of CH2 signal is 1.47A. It is correct.
[attach]1838[/attach]

Author: Prabath Time: 2017-11-22 20:12
Edited by Prabath at 2017-11-23 00:03

Hi Amy..Those are called software & hardware Bugs.... please fix them...

What to do for 312mA Deviation error it is a big problem with amp clamp..

Also trigger is very unstable need a better software routines

Other thing is how can i select record length greater than 4K...?

Thanks..

Author: Prabath Time: 2017-11-23 01:32
What happaning here it behaves wired and freeze http://www.fastswf.com/BaUh27Q

Author: amy Time: 2017-11-23 09:33

Prabath replied at 2017-11-23 01:32
What happaning here it behaves wired and freeze http://www.fastswf.com/BaUh27Q

Sir, you didn't give me the video I wanted about the trigger. I can't help you.

About the deviation error, Would you please confirm the oscilloscope or the current clamp?

The software freeze: I don't know how you operate it, and then it crashes.
I don't just need results. I also need how to crash.

Please refer to the picture to change the length.
[attach]1840[/attach]

PS: Can you describe clearly one by one? Did you see my reply?

Author: Prabath Time: 2017-11-23 19:27

First of all, for triggering problems, please change the trigger mode to normal, and then send us video to study.

Here is requested trigger video http://www.fastswf.com/c56dSXw

Author: Prabath Time: 2017-11-23 20:28

About the deviation error, Would you please confirm the oscilloscope or the current clamp?

deviation error 314mV i see it when nothing connected...

The software freeze: I don't know how you operate it, and then it crashes.
I don't just need results. I also need how to crash.

I does not crash i can click unclick buttons, menus,radio buttons..it just wont execute intended actions it supposed to do...? See the video carefully..

Thanks..

[/quote]

Author: Prabath Time: 2017-11-24 10:40

About the deviation error, Would you please confirm the oscilloscope or the current clamp?

When nothing is connected i see this..?
[attach]1845[/attach]

How to use Buffer recording greater than >4K for storing
http://www.fastswf.com/3epE3bc

Thanks..

Author: amy Time: 2017-11-24 11:38
Edited by amy at 2017-11-24 11:50

Prabath replied at 2017-11-23 19:27
Here is requested trigger video http://www.fastswf.com/c56dSXw

Sir, about the trigger, it is not a bug.
I think there is a short pulse in your signal.
This pulse signal has been detected when triggered. You can view the "Trig'D" on the top left corner of the software. It explains the success of the trigger. And the frequency of triggering is very high.
But the sampling is very low when the tiembase is 20ms. The short pulse has not been collected.

Example, this is the signal I draw in the following picture. There are four short pulses.
[attach]1846[/attach]

Use the DSO6000, edge and auto trigger in the following video. Each trigger was successful. But not every pulse is collected.
[attach]1847[/attach]

In addition, You can use the peak detect to acquire the short pulse.
[attach]1848[/attach]

If you don't want to colloect the short pulse and only want to trigger your main waveform, you can set the trigger mode to pulse and the trigger sweep to normal, and set the pulse width.
[attach]1849[/attach]

For example in this vidoe.
[attach]1850[/attach]

Author: amy Time: 2017-11-24 11:43

Prabath replied at 2017-11-24 10:40
When nothing is connected i see this..?

If it is the noise from the scope, please contact your seller to return factory for repair.

The buffer length only can be set as 4K if you want to record the data.

Author: amy Time: 2017-11-24 11:44

Prabath replied at 2017-11-23 20:28
deviation error 314mV i see it when nothing connected...

I don't know how you operate it before the device crash.

Author: Prabath Time: 2017-11-25 11:35
Edited by Prabath at 2017-11-25 11:41

About trigger..

This is a scope for car repair right....? It was low frequency signal and it was just Car engine coil firing at idle ...

its seems this scope does not have better edge triggering hardware built in this scope... there is also tick tick tick noise coming from inside the scope..(this is not a concern for me but the unusable trigger is)

Becasue of random 314mV noise how do i replace my scope..? i have brought it few week ago from aliexpress.. my serial is 641004141

Thanks..

Author: amy Time: 2017-11-27 16:51

Prabath replied at 2017-11-25 11:35
About trigger..

This is a scope for car repair right....? It was low frequency signal and it was ju ...

Sir, this product is not hardware trigger, it is software trigger.
But on the top left corner of the software, always displays "trig'd", it means it is triggered.

Use my method, maybe you can view the short pulse.
You can't see it, it doesn't mean it doesn't exist.

About the noise, you can contact your seller on aliexpress. He will deal with it.

Author: Prabath Time: 2017-11-27 23:02
Which Hantek Scopes have better Software and Hardware trigger...?

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