Good Clock Waveform

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rjh
Posts: 2
Joined: 27 Mar 2019, 20:39

Good Clock Waveform

Post by rjh » 10 Apr 2019, 09:43

Hello,

I keep seeing issues with Clock waveforms so thought I would post a scope plot from my board at that stage.

Please note that I've limited the bandwidth to 20MHz to simulate what a low cost scope may show.

Cheers,

Richard
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gigatron_clock.jpeg
gigatron_clock.jpeg (75.43 KiB) Viewed 483 times

gesari
Posts: 32
Joined: 11 Apr 2019, 07:15
Location: Valladolid, Spain
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Re: Good Clock Waveform

Post by gesari » 15 Apr 2019, 13:25

It doesn't look much square.
If U1 is replaced from a 74HCT04 to a 74HC04 I think you can get a better square wave.

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marcelk
Posts: 400
Joined: 13 May 2018, 08:26

Re: Good Clock Waveform

Post by marcelk » 15 Apr 2019, 16:11

It looks how it should be. Symmetrical would be nice for Justin's high resolution mode. But I haven't looked after the 74HC04 issue any further.

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