2
\$\begingroup\$

With my new DS2072A I compensated the PVP2350 probes according to the instructions at 50 mV/div as chosen by the "Auto" button. Then, when I switch to 100 mV/div there's some overshoot with both probes on both channels.

Test signal at 50 mv/div

Overshoot at 100 mv/div

It's more obivous at 2 ms/div:
50 mV/div, 2 ms/div

100 mV/div, 2 ms/div

  • Is that bad?
  • Is there anything I can do to fix it?
  • Is it a fault of the scope or the probes?
  • Could it be a factory reject smuggled out of the factory and sold by crooks?

I bought it from taobao.com via superbuy.com (a taobao agent who orders from taobao who only ship to China and forwarded it to Austria), so I'm not sure what my warranty options are.

I unlocked the scope to 300 MHz and ran self calibration.
Software version: 00.03.06
Hardware version: 2.3

\$\endgroup\$
4
  • \$\begingroup\$ The scope is not properly compensated./calibrated. The rest, who smuggled the scope and what about warranty is up to you. \$\endgroup\$ Jul 21 '19 at 16:25
  • \$\begingroup\$ Then how do I properly compensate/calibrate it? The instructions say to turn the slit till the wave is square, which I did. When I switched to 100 mV/div it overshoots. BTW, it wasn't smuggled, I declared the real value and paid import tax and fee. \$\endgroup\$
    – darsie
    Jul 21 '19 at 17:33
  • \$\begingroup\$ @darsie, get your story straight ... you are the one that said smuggled out of the factory \$\endgroup\$
    – jsotola
    Jul 22 '19 at 0:31
  • \$\begingroup\$ @jsotola Ahh, right, forgot about that. \$\endgroup\$
    – darsie
    Jul 22 '19 at 6:17
1
\$\begingroup\$

I'm not sure if the answer form Rigol should make me sad or happy:

On 8/14/19 9:46 AM, Seber.Yang@rigol.com wrote:

Dear Sir

Nice to meet you!

After confirmed, it's normal phenomenon, and it don't affect the performance of the oscilloscope, thanks~

\$\endgroup\$
3
  • \$\begingroup\$ You can adjust the compensation of the probes using any voltage setting you like. If you need nice, flat tops at 2mV per division then adjust the compensation at that setting. \$\endgroup\$
    – JRE
    Aug 14 '19 at 11:16
  • \$\begingroup\$ @JRE Yeah, I just considered that a tedious workaround rather than normal. \$\endgroup\$
    – darsie
    Aug 14 '19 at 12:02
  • \$\begingroup\$ You'd love my old D43 then. Pretty much any change of setting means chasing around and readjusting other things. \$\endgroup\$
    – JRE
    Aug 14 '19 at 12:23

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.