I can't find the answer to this in the documentation I just downloaded.
What is the output impedance (source impedance) of the AWG output?
What are the limitations on load impedance for that output?
(Specifically, can it drive 50 ohms?)
Hi,
In the data sheet of the MSO5000, for example, the amplitude of the built-in AWG at 50Ohm and Hi-Z is explicitly described, if it is missing in the data sheet of the DHO900(S), I would first assume that the output is only "Hi-Z".
We do not know until a DHO900S owner has measured the output.
Otherwise, ask Rigol directly.
I'm pretty certain it's 50 Ohms like basically all signal generators. There was a post on the forum (most probably in the "Rigol's New DHO800 Oscilloscope unbox & teardown" thread) that I don't find anymore where two photos of the AWG section were published (basically only a D/A coverter, reconstruction filter and some OPAMPs, PSUs, attenuation and protection circuitry -- the "heavy weight lifting" appears to be handled in the Zynq). Sorry to the owner of the photos whom I cannot give proper credit here (would have posted a link if I had found the message again). But anyway, here are the photos. They clearly show four 49.9 Ohms resistors (two Top and two Bottom-side poulated) which is a dead-hint that it's impedance indeed is 50 Ohms.