n00b Scope question

[ScottyAU]

Hi all,

I've just got a new bench power supply - and I've been playing around with it with my scope - looking at the noise on/off etc. 

I have a Rigol DS2072 with the 300Mhz "option" - but still on v2 - haven't touched v3.

My question is - I have my bench supply set to 5v. (the setting doesn't matter but let's go with 5v).  If I meter across the outputs with my multimeter I see bang on 5v.  If I connect my scope though - I only see 1v.  If I chance the setting on the bench supply to say 10v - the multimeter sees it just fine - but the scope sees 2v.

What am I doing wrong on the scope to get the scale/output on the scope wrong like this?  (I've tried a restore to defaults with no luck).

Cheers.

Scotty

[tautech]

You say you see 1 or 2 V.
How do you see this?

Are you reading this from the graticules?
Or from some on-screen measurement?

What is your vertical attenuator setting?
Is the Ch input set to match the probe?

[ScottyAU]

I figured it out - I have 10x probes but only had them set to 1x in the channel settings.

Setting it to 10x I now see the correct voltage...

Cheers!

[ScottyAU]

PS - thanks tautech for the reply.

[tautech]

Scotty, have you worked out that to measure ripple, you need to set your channel input to AC coupling and lower V/div. 

[ScottyAU]

I've been playing with different scales on the v/div etc - but i'll set it to AC coupling now - ta for the tip!

[w2aew]

I've been playing with different scales on the v/div etc - but i'll set it to AC coupling now - ta for the tip!

Here's a video of mine that describes scenarios where AC or DC coupling are useful:

[ScottyAU]

I'm still working my way through a lot of your videos w2aew - thanks very much!