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Re: some way to get alternating display of two different sweep rates on a 7904A?


John Griessen
 

On 4/13/19 12:45 AM, Dennis Tillman W7PF wrote:
In the setup section of the 7904A manual they explain the 20 possible
vertical and horizontal mode combinations. It starts on pg 2-11 of the 7904A
manual.
Yes, and I am using the checkout steps called preliminary setup: section 2 p 5-7
now to make sure this scope is working well before sending it out.

On 4/13/19 1:44 AM, John Kolb wrote:> Independent sweep speeds easy with the 7844 dual beam scope :)

I know! Wont be selling that one. (yet...)

On 4/13/19 8:06 AM, cmjones01 wrote:> Yes, this is certainly possible on the 4-slot scopes. I do it on my 7904A.
Two timebases in the vertical slots. Horizontal mode set to ALT, vertical
to CHOP I think
Yes, thanks Chris. I'm wanting to show off 1000X speed difference triggered off same edge, so ALT and ALT.
There are some switch settings that don't work though, like A or B trigger source set to other than mode...

Will report back when I get my desired traces. I have these in slots left to right:

7A19, 7A26, 7B71, 7B92A

So far I find in the manual section 2 p 7 "slaved alternate" operation. I'll be testing that my scope does correctly that now.

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