caramoan tour package

caramoan tour package

« previous next »
Pages: [1]   Go Down

Author Topic: USB DSO Scope Problem (Hantek 2150)  (Read 800 times)

Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

  • Hydroelectric
  • ***
  • Posts: 3439
  • Pogi/Ganda Points: 123
  • Truth suffers, but never dies.
USB DSO Scope Problem (Hantek 2150)
« on: September 11, 2011, 12:25:05 PM »

bat ganito ang display?  ???







ano ba ang remedy nyo, para mag-smooth ang waveform display?
Logged
It's difficult to see the picture when you're inside the frame.

Philippine Electronics Forum

USB DSO Scope Problem (Hantek 2150)
« on: September 11, 2011, 12:25:05 PM »

Offline insomartin

  • Technical People
  • Nuclear Reactor
  • *****
  • Posts: 4825
  • Pogi/Ganda Points: 320
  • Gender: Male
  • Nalulunod lang...
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #1 on: September 11, 2011, 12:34:13 PM »
ok lang yan.  ;D
i ground mo yung TIP. if flat line naman it means may issue ka lang sa grounding.
maingay kasi ang PC pati LCD monitor.
since USB based yan issue talaga ang grounding.

Logged

Philippine Electronics Forum

Re: USB DSO Scope Problem (Hantek 2150)
« Reply #1 on: September 11, 2011, 12:34:13 PM »

Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

  • Hydroelectric
  • ***
  • Posts: 3439
  • Pogi/Ganda Points: 123
  • Truth suffers, but never dies.
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #2 on: September 11, 2011, 01:12:31 PM »
eto yong test leads grounded. (netbook in battery supply only no adaptor)




eto naman yong test leads grounded plus GND option clicked. (netbok in battery suppy only no adaptor)




saan kaya nanggaling ang ripples na ito? stray noise sa testleads o sa mismong usb scope device.  


Logged
It's difficult to see the picture when you're inside the frame.

Philippine Electronics Forum

Re: USB DSO Scope Problem (Hantek 2150)
« Reply #2 on: September 11, 2011, 01:12:31 PM »

Offline zrehtiek/keitherz

  • Lead Acid Battery
  • *******
  • Posts: 772
  • Pogi/Ganda Points: 45
  • Gender: Male
  • PhilRoboKit Anito
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #3 on: September 11, 2011, 01:13:34 PM »
normal lang yan. as sir martin said. noises. so grounding lang. ;D
patouch naman nyan ;D :D
Logged

Philippine Electronics Forum

Re: USB DSO Scope Problem (Hantek 2150)
« Reply #3 on: September 11, 2011, 01:13:34 PM »

Offline rdpzycho

  • Technical People
  • Solar Power Satellite
  • *****
  • Posts: 10724
  • Pogi/Ganda Points: 631
  • Gender: Male
  • Respect Begets Respect
    • rdpzycho
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #4 on: September 11, 2011, 01:45:31 PM »
daming sources ng noise tita piona, normal lang 'yan kahit na sa mga standalone DSO.

kung halimbawa kasing 60MHz 'yung input bandwidth ng oscilloscope, at 1Mohm input impedance, nasa 1mVrms na kaagad ang noise from Thermal Noise.

http://www.daycounter.com/Calculators/Thermal-Noise-Calculator.phtml

kung dahil sa PC mismo 'yung noise, merong mapapansin na pattern diyan.
Logged
‎"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
- Rene Descartes

"For every difficult problem there is always a simple answer and most of them are wrong."
- Clayton Paul

Philippine Electronics Forum

Re: USB DSO Scope Problem (Hantek 2150)
« Reply #4 on: September 11, 2011, 01:45:31 PM »

Offline rdpzycho

  • Technical People
  • Solar Power Satellite
  • *****
  • Posts: 10724
  • Pogi/Ganda Points: 631
  • Gender: Male
  • Respect Begets Respect
    • rdpzycho
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #5 on: September 11, 2011, 01:47:53 PM »
additional note nga pala tita piona, kung merong averaging function 'yung scope, pwedeng i-enable 'yun para medyo maalis 'yung galing sa noise.
Logged
‎"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
- Rene Descartes

"For every difficult problem there is always a simple answer and most of them are wrong."
- Clayton Paul

Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

  • Hydroelectric
  • ***
  • Posts: 3439
  • Pogi/Ganda Points: 123
  • Truth suffers, but never dies.
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #6 on: September 11, 2011, 02:26:51 PM »
tama nga siguro kayo mga sis this scope really needs a grounding tweak


eto yong subtractive signal (middle red) from both channel 1 and 2 with same source, netbook in battery supply only, dso device ground plane not earthed.



eto naman yong subtractive signal ng channel 1 and 2 with same source, netbook on battery supply only, dso ground plane earthed.

Logged
It's difficult to see the picture when you're inside the frame.

Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

  • Hydroelectric
  • ***
  • Posts: 3439
  • Pogi/Ganda Points: 123
  • Truth suffers, but never dies.
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #7 on: September 11, 2011, 02:38:06 PM »
Quote from: rdpzycho on September 11, 2011, 01:45:31 PM
daming sources ng noise tita piona, normal lang 'yan kahit na sa mga standalone DSO.

kung halimbawa kasing 60MHz 'yung input bandwidth ng oscilloscope, at 1Mohm input impedance, nasa 1mVrms na kaagad ang noise from Thermal Noise.

http://www.daycounter.com/Calculators/Thermal-Noise-Calculator.phtml

kung dahil sa PC mismo 'yung noise, merong mapapansin na pattern diyan.

ah okay kuya rd, normal pala talaga ito. i will try 100mhz fluke probe kung may pagbabago sa waveform display.

Quote from: zrehtiek/keitherz on September 11, 2011, 01:13:34 PM
normal lang yan. as sir martin said. noises. so grounding lang. ;D
patouch naman nyan ;D :D

okay thanks, i will try the grounding schemes to minimize this waveform distortion. di pwedeng e touch nakahubad ngayon ang usb scope  ;D ;D ;D

Quote from: insomartin on September 11, 2011, 12:34:13 PM
ok lang yan.  ;D
i ground mo yung TIP. if flat line naman it means may issue ka lang sa grounding.
maingay kasi ang PC pati LCD monitor.
since USB based yan issue talaga ang grounding.


thanks sis, i will put copper shielding sa loob if i have to  ;D


Logged
It's difficult to see the picture when you're inside the frame.

Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

  • Hydroelectric
  • ***
  • Posts: 3439
  • Pogi/Ganda Points: 123
  • Truth suffers, but never dies.
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #8 on: September 11, 2011, 02:43:01 PM »
Quote from: rdpzycho on September 11, 2011, 01:47:53 PM
additional note nga pala tita piona, kung merong averaging function 'yung scope, pwedeng i-enable 'yun para medyo maalis 'yung galing sa noise.

try kong tingnan kuya rd kung meron nitong option na to.
Logged
It's difficult to see the picture when you're inside the frame.

Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

  • Hydroelectric
  • ***
  • Posts: 3439
  • Pogi/Ganda Points: 123
  • Truth suffers, but never dies.
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #9 on: September 11, 2011, 04:03:11 PM »
here we go mga sistah...

netbook supplied with adaptor, dso scope was copper shielded and earthed and signal gen was also earthed.




@ hantek  

pls put thumb screw on your device for easy earthing of your device!  >:(


 :D :D :D
Logged
It's difficult to see the picture when you're inside the frame.

Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

  • Hydroelectric
  • ***
  • Posts: 3439
  • Pogi/Ganda Points: 123
  • Truth suffers, but never dies.
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #10 on: September 11, 2011, 08:50:00 PM »

abaw lenti gid di gyud mawala ni na noise bla!



 ;D ;D ;D
Logged
It's difficult to see the picture when you're inside the frame.

Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

  • Hydroelectric
  • ***
  • Posts: 3439
  • Pogi/Ganda Points: 123
  • Truth suffers, but never dies.
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #11 on: September 13, 2011, 12:45:15 AM »


thats the best i got  ;D

1. pc, lappy, netbook if used, the three prong male plug must be earth grounded.
2. shielding was reinforced with copper shielding.
3. fluke 100mhz scope was used.
4. signal gen must also be earth grounded as provided by the instrument.
5. mpu was reinforced with heatsink.
6. software was upgraded to the latest version.

thanks mga sistah for enlightening me about the grounding. ( red bull sa inyo  ;D )

 :)
Logged
It's difficult to see the picture when you're inside the frame.

Offline zrehtiek/keitherz

  • Lead Acid Battery
  • *******
  • Posts: 772
  • Pogi/Ganda Points: 45
  • Gender: Male
  • PhilRoboKit Anito
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #12 on: September 13, 2011, 01:04:07 AM »
actually maganda na nga yang signal na nakukuha mo sa scope e.
normal na talaga yan sa mga digital scopes. kaya may averaging function mga DSO. ;D
kaya patouch!
Logged

Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

  • Hydroelectric
  • ***
  • Posts: 3439
  • Pogi/Ganda Points: 123
  • Truth suffers, but never dies.
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #13 on: September 13, 2011, 01:23:11 AM »
 ;D ;D ;D

indi kasi ganyan pagnasalab ako gumagamit ng dso nagulat nalang ako ng gamitin ko sa bahay yang padala ni Ferdi na dso scope. nakakailang sa paningin ang mga nagsulsulputan na noise sa waveform.  ;D

no touch na sis, naka selyo na lahat e... ;D

@ rd

thanks sa paalaala nyo sa heat as a noise source.

==========

correction: yong probe nga pala ng fluke 100mhz dso ang ginamit ko.

again salamas sa inyo mga sistah!  :)
Logged
It's difficult to see the picture when you're inside the frame.

Offline nucleus

  • Gas Turbine
  • **
  • Posts: 2573
  • Pogi/Ganda Points: 123
  • Gender: Male
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #14 on: September 13, 2011, 01:39:35 AM »
Quote from: piona on September 13, 2011, 01:23:11 AM
;D ;D ;D

indi kasi ganyan pagnasalab ako gumagamit ng dso nagulat nalang ako ng gamitin ko sa bahay yang padala ni Ferdi na dso scope. nakakailang sa paningin ang mga nagsulsulputan na noise sa waveform.  ;D

no touch na sis, naka selyo na lahat e... ;D

@ rd

thanks sa paalaala nyo sa heat as a noise source.

==========

correction: yong probe nga pala ng fluke 100mhz dso ang ginamit ko.

again salamas sa inyo mga sistah!  :)


may ganyan din si boss ferds ng elab :D mukhang ganyan talaga ang design nyan ::)
Logged
Hi! I'm nucleus and i carry the charge 8)

Hindi ako nandito para makipagkumpitensya kanino man

Offline RaffT

  • Technical People
  • Hydroelectric
  • *****
  • Posts: 3440
  • Pogi/Ganda Points: 103
  • Gender: Male
  • more on R-n-D
    • MY Bots
Re: USB DSO Scope Problem (Hantek 2150)
« Reply #15 on: January 28, 2012, 11:13:14 AM »
@piona,

benta mo nalang yang scope kay kietherz.. para makahawak na tlga siya ;D
Logged
Learning is CooL! BEAM robotics/DIY UCD180/PSP/AC wtmtr/digiESRmtr/PICkit™2 clone/SGTC/SSTC/DR-SSTC

Never argue with an idiot... They'll take you down to their level and beat you with experience

Philippine Electronics Forum

Re: USB DSO Scope Problem (Hantek 2150)
« Reply #15 on: January 28, 2012, 11:13:14 AM »
Pages: [1]   Go Up
« previous next »
 

Privacy Policy

Contact Us: elabph@yahoo.com