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Old 19th May 2013, 01:12 PM   #1
noyan is offline noyan  Turkey
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Default Oscilloscope reading

Hi,
I have bought an oscilloscope for testing my own built kwak clock out. But, i am newbie with the oscilloscope I wonder if the signal out of the Kwak clock is good or not? Can you please review the photographs for me?
Thanks a lot,
Noyan

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хостинг фотографий

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хостинг картинок bmp

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Last edited by noyan; 19th May 2013 at 01:17 PM.
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Old 19th May 2013, 07:12 PM   #2
oshifis is offline oshifis  Hungary
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Did you measure it with a probe?
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Old 19th May 2013, 07:34 PM   #3
noyan is offline noyan  Turkey
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Yes
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Old 19th May 2013, 07:46 PM   #4
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What is the bandwidth spec for the scope?
The frequency looks good.

Edit: Looks to me like a 25MHz scope. See the fundamental and a few harmonics.

jan
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Old 19th May 2013, 07:54 PM   #5
noyan is offline noyan  Turkey
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Oscilloscope is;
UNI-T UTD2102CEL 100MHZ Digital Storage Oscilloscope 7" LCD 1G Sa/s Sampling Rate
Thanks
Noyan
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Old 19th May 2013, 08:01 PM   #6
biju55 is offline biju55  India
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There are lot of videos in the you tube regarding the usage of an oscilloscope . that would help you .
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Old 20th May 2013, 06:21 PM   #7
oshifis is offline oshifis  Hungary
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There seems to be some excessive capacitive load. It might be caused by the probe itself (if the test point is a high impedance out), or inherent to the circuit, or caused by the next stage, or caused by cable capacitance, etc. It is hard to tell without knowing at which point do you measure, and what is the capacitance of your probe.
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Old 20th May 2013, 07:12 PM   #8
AKN is offline AKN  Sweden
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Probe in X1 or X10 mode?
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Old 20th May 2013, 08:14 PM   #9
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It might help if you could post a schematic of the oscillator you build.

jan
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Old 21st May 2013, 01:32 AM   #10
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This always made me wonder-how much bandwidth is required to see the pulse train of the clock? This looks like the fundamental and a few harmonics, like an above poster said. For an 11.2896MHz clock, how much bandwidth?
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