Author Topic: Hantek - Tekway - DSO hack - get 200MHz bw for free  (Read 1587539 times)

0 Members and 2 Guests are viewing this topic.

Offline tinhead

  • Super Contributor
  • ***
  • Posts: 1852
  • Country: 00
    • If you like my hacks, send me a donation
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2975 on: February 16, 2019, 09:13:43 pm »
I thought it was mentioned some time ago that the 2ns feature is no longer an indication that the hack worked, or that its 200Mhz.
It comes as default now, but doesnt mean you have 200Mhz enabled.
May be wrong, but I am sure I read that on here from Tinhead

that's right, depending on firmware/hardware/models it can be still e.g. 100MHz BW with 2ns/DIV enabled. I do not track which models/fw/hw are affected, so easiest way is just give a try and measure 200MHz signal connected to input (directly, because with slower models one get slower probes anyway) right before and after hack. It can be simply XO, what so ever, or even diy pulse generator
I don't want to be human! I want to see gamma rays, I want to hear X-rays, and I want to smell dark matter ...
I want to reach out with something other than these prehensile paws and feel the solar wind of a supernova flowing over me.
 

Offline GilbouFR

  • Contributor
  • Posts: 15
  • Country: fr
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2976 on: February 19, 2019, 03:20:48 am »
I don't have the hardware to generate a signal high enough in frequency to test.
I'm learning for now so my use of the DSO is very basic and simple and besides a crappy chinese DSO generator I don't have a proper and proper generator or anything at 200 MHz.
I guess a basic 50 MHz would have been enough for me anyway  ;D
 

Offline indman

  • Regular Contributor
  • *
  • Posts: 170
  • Country: by
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2977 on: February 19, 2019, 06:12:32 am »
Here real characteristics of modern releases of DSO5102P:
Amplitude-frequency characteristic of one (any) channel at the switched-off other channel
1mV/div: 25Mhz (-3dB); 50Mhz (-6dB); 100Mhz (-12dB). Scope of noise 0.4 divisions.
2mV-2V/div:<40Mhz(0dB);70Mhz(+3dB);100Mhz(0dB);120Mhz(-3dB);140MHz(-6dB). Scope of noise 0.1-0.2 divisions.
When giving one signal on 2 channels (through cables of identical length) oscillograms are shifted rather each other on 2ns.
The shift is visible on horizontal sweep of an oscillograph <40ns/div.For this reason mathematical operations have normal (+-10%) to frequency 10Mhz.
The mode (X-Y) normally works only to 20kHz.With the included afterglow to 3Mhz.
As a result - in the 2nd the channel mode the DSO5102P normally works (+-10%) to 10Mhz, in 1nd the channel mode witch measurements (+-10%) to 40Mhz.
As the indicator - to 140Mhz.
CH1 and CH2:Rin=1MOhm;Cin=20pF; Ext.trigger:Rin=1MOhm;Cin=16.5pF
Probes (x1):R=332Ohm;C=96pF;works frequency to 7MHz(-3dB)
Probes (x10):Rin=10MOhm;Cin=16.5pF to frequency 120MHz(-3dB)
« Last Edit: February 19, 2019, 07:07:17 am by indman »
 

Offline gf

  • Regular Contributor
  • *
  • Posts: 95
  • Country: de
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2978 on: February 19, 2019, 06:48:03 am »
When giving one signal on 2 channels (through cables of identical length) oscillograms are shifted rather each other on 2ns.

Seems to be a similar behavior as I noticed on my handheld Hantek 2D72 (but there it is even 50ns, when the time base is >= 10us/div);
https://www.eediscuss.com/forum.php?mod=viewthread&tid=14706
« Last Edit: February 19, 2019, 07:01:27 am by gf »
 

Offline GilbouFR

  • Contributor
  • Posts: 15
  • Country: fr
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2979 on: February 21, 2019, 08:07:48 am »
How can a noobie like me build a 200 MHz generator to test it ?
I have no idea how to
 

Offline tinhead

  • Super Contributor
  • ***
  • Posts: 1852
  • Country: 00
    • If you like my hacks, send me a donation
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2980 on: February 21, 2019, 08:40:07 am »
How can a noobie like me build a 200 MHz generator to test it ?
I have no idea how to

e.g. http://www.eevblog.com/2012/07/06/eevblog-306-jim-williams-pulse-generator/

avalanche pulse generator is what you need, for sure you can use "any" signal generator (uC, CPLD, XO, VCXO, etc.) but it must have rise time with less than 1ns. When using XOs don't forget that their rise time is specified 20/80 and of course with "no load", so when you use e.g. Silabs Sixxx oscillators, they drop the rise time from 350ps to e.g. 1ns at 15pF load (which is the case for the DSO input capacity).
I don't want to be human! I want to see gamma rays, I want to hear X-rays, and I want to smell dark matter ...
I want to reach out with something other than these prehensile paws and feel the solar wind of a supernova flowing over me.
 

Offline Zzippo

  • Contributor
  • Posts: 5
  • Country: it
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2981 on: February 25, 2019, 05:07:57 am »
I don't know if it's the case to use this thread but this seems to be the most famous one about these scopes, the fact is that I think to have found a bad firmware bug and spotted how to replicate it

the bug is the entire scope that freezes after startup, i can tell it's doing that because the Led near the V0 knob is on while powerup (sometimes ALL the Leds are on but it's ok apparently), when it comes to actual wave screen it seems going but there's an "adjust V0 to set brightness" message on the bottom and the moment i touch ANYTHING it freezes immediately for a pair of seconds and reboots with all the memorized setups at default, this happens like once per 10\20 times i turn it on and i always have the fear it bricks totally, i remember it rebooted also once, while messing too fast with a lot of settings, apart this startup problem

recently I press "default setup" before turning it off and apparently it never did that again... honestly the only setting I usually had on was the silly buzzer for button presses (apart regular settings like 20MHz bw filter, 5V per unit vertical, and maybe a faster timebase), probably it fails some settings checksum

my unit is a DSO5102P with fw dso5kp_func_dso5102p20170714... the previous 3.40.0 161227.0 had the same exact issue (sorry the format of the infos i give) i waited some time before posting this considering it may do this trick again but apparently it did not

some apparently say that it may be a bad CMOS memory but at this point i also think it can be a battery-to-line power transition issue... i don't know  :-//

any idea? solutions? similar cases?
 

Offline brainwash

  • Frequent Contributor
  • **
  • Posts: 441
  • Country: de
    • Hack Correlation
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2982 on: March 06, 2019, 10:25:23 am »
For me it's mostly crashing when in split-screen/zoom mode, I haven't been able to identify the exact settings.
I also had issues with the loose screen connector but that usually just results in a white screen, rarely a reboot.
 

Offline Zzippo

  • Contributor
  • Posts: 5
  • Country: it
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2983 on: March 11, 2019, 08:28:12 am »
For me it's mostly crashing when in split-screen/zoom mode, I haven't been able to identify the exact settings.
I also had issues with the loose screen connector but that usually just results in a white screen, rarely a reboot.
good to know about the screen cable... if it becomes white my face will do the same  :phew:
 

Offline martinisonline

  • Newbie
  • Posts: 1
  • Country: pt
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2984 on: April 01, 2019, 12:12:08 pm »
I don't know if it's the case to use this thread but this seems to be the most famous one about these scopes, the fact is that I think to have found a bad firmware bug and spotted how to replicate it

the bug is the entire scope that freezes after startup, i can tell it's doing that because the Led near the V0 knob is on while powerup (sometimes ALL the Leds are on but it's ok apparently), when it comes to actual wave screen it seems going but there's an "adjust V0 to set brightness" message on the bottom and the moment i touch ANYTHING it freezes immediately for a pair of seconds and reboots with all the memorized setups at default, this happens like once per 10\20 times i turn it on and i always have the fear it bricks totally, i remember it rebooted also once, while messing too fast with a lot of settings, apart this startup problem

recently I press "default setup" before turning it off and apparently it never did that again... honestly the only setting I usually had on was the silly buzzer for button presses (apart regular settings like 20MHz bw filter, 5V per unit vertical, and maybe a faster timebase), probably it fails some settings checksum

my unit is a DSO5102P with fw dso5kp_func_dso5102p20170714... the previous 3.40.0 161227.0 had the same exact issue (sorry the format of the infos i give) i waited some time before posting this considering it may do this trick again but apparently it did not

some apparently say that it may be a bad CMOS memory but at this point i also think it can be a battery-to-line power transition issue... i don't know  :-//

any idea? solutions? similar cases?

It happened with me once with the firmware version 180120.0.
Updated to the last firmware (dso5kp_func_dso5102p20190125.up) a couple of days ago. Now only the time will tell if the problem returns.
 

Offline Zzippo

  • Contributor
  • Posts: 5
  • Country: it
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2985 on: April 19, 2019, 08:17:31 am »
I don't know if it's the case to use this thread but this seems to be the most famous one about these scopes, the fact is that I think to have found a bad firmware bug and spotted how to replicate it

the bug is the entire scope that freezes after startup, i can tell it's doing that because the Led near the V0 knob is on while powerup (sometimes ALL the Leds are on but it's ok apparently), when it comes to actual wave screen it seems going but there's an "adjust V0 to set brightness" message on the bottom and the moment i touch ANYTHING it freezes immediately for a pair of seconds and reboots with all the memorized setups at default, this happens like once per 10\20 times i turn it on and i always have the fear it bricks totally, i remember it rebooted also once, while messing too fast with a lot of settings, apart this startup problem

recently I press "default setup" before turning it off and apparently it never did that again... honestly the only setting I usually had on was the silly buzzer for button presses (apart regular settings like 20MHz bw filter, 5V per unit vertical, and maybe a faster timebase), probably it fails some settings checksum

my unit is a DSO5102P with fw dso5kp_func_dso5102p20170714... the previous 3.40.0 161227.0 had the same exact issue (sorry the format of the infos i give) i waited some time before posting this considering it may do this trick again but apparently it did not

some apparently say that it may be a bad CMOS memory but at this point i also think it can be a battery-to-line power transition issue... i don't know  :-//

any idea? solutions? similar cases?

It happened with me once with the firmware version 180120.0.
Updated to the last firmware (dso5kp_func_dso5102p20190125.up) a couple of days ago. Now only the time will tell if the problem returns.

did you have the beeper enabled?
« Last Edit: April 19, 2019, 08:19:03 am by Zzippo »
 

Offline Zzippo

  • Contributor
  • Posts: 5
  • Country: it
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2986 on: April 19, 2019, 08:21:22 am »
anyways... it's not doing that anymore apparently, i press "default setup" every time i turn it off (also a good thing for me)
 

Offline Checksum47

  • Newbie
  • Posts: 4
  • Country: us
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2987 on: April 19, 2019, 12:38:20 pm »
I am looking at getting a USB UART TTY chip and Im a little confused when I go on Eb@y.  There seem to be 4 pin versions, 5 pin, and even 6 pin versions.  And then there seems to be micro-usb and regular usb.  I even saw one seller offering an extra 90 degree header if I chose an upgraded shipping method.  Do I need a 90 degree header?  Would it make the install nicer?  Can someone just provide me a link so I dont buy the wrong usb chip?
 


Offline tinhead

  • Super Contributor
  • ***
  • Posts: 1852
  • Country: 00
    • If you like my hacks, send me a donation
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2989 on: April 19, 2019, 07:17:25 pm »
anyways... it's not doing that anymore apparently, i press "default setup" every time i turn it off (also a good thing for me)

there is general "thing" with these DSO series, when you change settings (any, so default as well), they write it into memory and save 2-5 seconds later. When you turn off while DSO is saving, you might get fancy issues. 
I don't want to be human! I want to see gamma rays, I want to hear X-rays, and I want to smell dark matter ...
I want to reach out with something other than these prehensile paws and feel the solar wind of a supernova flowing over me.
 
The following users thanked this post: Zzippo

Offline Zzippo

  • Contributor
  • Posts: 5
  • Country: it
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2990 on: April 20, 2019, 11:02:47 am »
there is general "thing" with these DSO series, when you change settings (any, so default as well), they write it into memory and save 2-5 seconds later. When you turn off while DSO is saving, you might get fancy issues.

i see....... thanks!

honestly i thought about this as well, beeing used with windows etc we know that there's "behind the curtains" movements at random moments, so i don't force the scope to go fast behind me usually, i've always waited a bit before turning it off after messing with it (of course it shouldn't be like this, it's a bit disappointing, it's not windows, but we are used to "hard to use stuff" ^-^), 5 seconds is a bit "random far" tbh

i'll wait at least 10 secs before turning it off, i've also seen that the power switch simply disconnect mains (and it should be like this in my opinion) so a "bad shutoff" is not impossible, as a PC
 

Offline sergiycoolest

  • Newbie
  • Posts: 2
  • Country: ua
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2991 on: Today at 08:04:45 am »
Hello, to All Members! I am Sergiy from Ukraine. Would you be so kind to help me? My Hantek DSO 4102C after the 1st year of working "unexpectedly died".  Once, after starting, LCD became black. All buttons are working and LEDs are working too.  I checked power supply. All are good: +14,5V; +12V; -8V; +6,4V; +5V; +3,3V. I found control points on the main board (DSO4000C V1.02 2015-03) & checked them.  They are: +14,4V; +12V; -7V; +5V; -5V; +3,3V; +2,5V; +1,8V; +1,3V; +1,25V.  Only +2,5V was absent at all. One SMD SOT23 part was damaged (burned). It marked as (SANE) & seems like precision voltage reference .  I did not find the electrical circuit of Hantek DSO 4102C.  I have the picture of a board. Can someone help me?
 

Offline sergiycoolest

  • Newbie
  • Posts: 2
  • Country: ua
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2992 on: Today at 08:06:38 am »
Hello, to All Members! I am Sergiy from Ukraine. Would you be so kind to help me? My Hantek DSO 4102C after the 1st year of working "unexpectedly died".  Once, after starting, LCD became black. All buttons are working and LEDs are working too.  I checked power supply. All are good: +14,5V; +12V; -8V; +6,4V; +5V; +3,3V. I found control points on the main board (DSO4000C V1.02 2015-03) & checked them.  They are: +14,4V; +12V; -7V; +5V; -5V; +3,3V; +2,5V; +1,8V; +1,3V; +1,25V.  Only +2,5V was absent at all. One SMD SOT23 part was damaged (burned). It marked as (SANE) & seems like precision voltage reference .  I did not find the electrical circuit of Hantek DSO 4102C.  I have the picture of a board. Can someone help me?
 

Online Microcheap

  • Regular Contributor
  • *
  • Posts: 94
  • Country: 00
Re: Hantek - Tekway - DSO hack - get 200MHz bw for free
« Reply #2993 on: Today at 09:05:09 am »
Hi sergiycoolest, welcome to the forum.
I've checked a 4102C board and U21 is indeed a Vref. It's marked R30E (REF3040) http://www.ti.com/lit/ds/symlink/ref3040.pdf

 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf