Author Topic: Rigol DS2000A - CH1/CH2 difference in noise and mechanical vibration sensibility  (Read 881 times)

0 Members and 1 Guest are viewing this topic.

Offline EdoFede

  • Contributor
  • Posts: 6
  • Country: it
Hi all,
I'm playing around and testing with my new DS2072A scope.

Someone other than me, has noticed different sensibility to noise and mechanical vibration between CH1 and CH2?

I found out by trying to connect two 50 Ohm terminator to the inputs.
CH1 got some spikes with terminator attached, CH2 near-no difference.
(500uV/div)

Without terminators:


With terminators:



Another strange behaviour I've noticed is a big difference in sensibility to mechanical vibration between CH1 and CH2.

Tapping front panel:


Closing top handle:



Not a big issue, but strange, not?

I've also noticed a slight positive DC offset (about 0.2div) on CH1, even after auto-cal run.

Bye,
Edoardo
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 

http://opalkelly.com/