Two one-channel oscilloscopes to make a single two-channel oscilloscope?

Thread Starter

Fuintur

Joined Nov 17, 2017
4
I've got this cheap http://akizukidenshi.com/download/ds/jye/UserManual_138_new_s.pdf oscilloscope, and I'm on a budget. For most measurements I need more than one channel (at least two channels, to calculate phase shift V-I across reactive loads for example), so I was wondering, if I bought a second oscilloscope just like the one above, and I connected together the grounds of both of them, could I sort of simulate a two channel oscilloscope?

Thank you,
 

Thread Starter

Fuintur

Joined Nov 17, 2017
4
TP4 from the first board to point A or B in the second board? Besides connecting both grounds, I imagine.


Do you think it's sensible?
Are there any oscilloscopes with these kind of specs

with two channels for 30 €?
What about the auto diagnostics oscilloscopes? Hantek 1008C? That's eight channels for 60€ They only go as far as 250kHz, that is not much, but probably more than enough for me.
 
Last edited:

MrChips

Joined Oct 2, 2009
21,618
TP4 from board #1 to point-B of board #2
This will cause the second board to trigger from the same input signal applied to board #1.

You will have to lift one leg of R15 on board #2 and inject the trigger signal from board #1 into the lifted leg.

DSO138 Trigger Input.jpg
 
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