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Gw Instek GDS2204E (200MHz 4 channel DSO) review
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CC555:
Hello,

similar problem with I2C  :(.

100 kHz clock signal, channel 4: SCL, channel 2: SDA, triggering at channel 1 event:

At 2 Ms the oscilloscope is not decoding:


a higher sample rate and it decodes properly:

tautech:
Wouldn't you normally trigger on the clock ?
CC555:

--- Quote from: tautech on December 24, 2017, 06:09:58 am ---Wouldn't you normally trigger on the clock ?

--- End quote ---

The problem would be the same, when you select 10 Mpts the oscilloscope needs a higher sample rate to decode the signal, if you select less memory it decodes at 2Ms/s iirc (I will try it later).

In this case I want to capture the bus at a specific event in my pcb, so I select the channel 1 to trigger the oscillocope on that event.

Thanks for you reply.
rhb:
*&#@!!!

I bought an MSO-2204EA precisely for this task!
nctnico:
I have not heard back from GW Instek's technical support in the EU but I'm pretty sure they are closed for the holidays.
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