Hi!
Since recently I also own a DS2000 series scope (the 200MHz version) and I have some questions and comments too.
Then, some things that confuse me.
In the drawings, the probes that come with the scope have two adjustment screws, for LF / HF or so, one on the plug and one on the probe itself. Mine only have a screw on the plug and the hole on the probe is filled with plastic stuff (but the hole can be seen clearly). Is that normal?
Also about the probes, the hooktip accessoires don't stick to the probes well, they very easily slip off a bit and then you're confused why you don't measure anything. Am I just too stupid to mount them (you just need to push them over the probe front, right?) or is this really a problem?
About the trigger, can I somehow trigger Ch1 and Ch2 seperately? Isn't that a sort of common feature? My old 1970 scope could do that, anyways
It's not a big problem because the memory depth is so huge, but it would still be nice in some situations.
Then, why did Rigol decide not to have a 50 Ohm input on the scope? I found that many of the scopes on the market don't have it. Is it because it's a bit easy to destroy with high-power input?
Anyways, if I plug a BNC T piece directly into the scope input, and terminate one end with a 50 ohm load, and plug my 50 ohm signal into the other, that will basically be a 50 ohm input with still accurate voltage measurements; correct?
Greetings,
Sven
I miss also the alternate trigger that is common on cheapo scoops, i did not found a workaround yet.
And yes about the 50 ohms it is not correct..., the BNC connector has not a high impedance for higher frequencies,
so the voltage on the BNC connector is not wath it is. Mine has 1 Mohm and 18 pf input, and also some inductance.
Even if you have a 50 ohm terminator on the input, the BNC connector has a complex impedance, which gives
wrong readings and also standing waves, as you can see on your plot. I measured on my Rigol 2072, that on 200 Mhz
the voltage drop by just connecting was 3 dB on a cable with T connector and 50 ohm termination, due to complex impedance.
So if possible i am very curious if you can measure then bandwidth on some points like 100-150-200Mhz...??
And the probes are oke for frequencies to 30 Mhz, and for pulse signals. For hihger frequencies you have to
use terminated cables. See also former posts.