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Date: Wed, 31 Jan 2018 15:36:47 +0000
From: Chris Wilson <dead.fets@gmail.com>
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Content preview: Hello Andy, That's good to know and the lead lengths are a
bit (possibly a lot...) excessive, so grounds are scattered. I have a few
DIP dividers to play with on the breadboard so I don't scrap another PCB
getting it to perfection. Thanks, divider next then hopefully it will all
be OK when it's built up properly! The MF one does a very good job for what
it cost. [...]
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Subject: Re: LF: Softrock RX divider IC problem, unexpected frequency out
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Hello Andy,
That's good to know and the lead lengths are a bit (possibly a lot...)
excessive, so grounds are scattered. I have a few DIP dividers to play
with on the breadboard so I don't scrap another PCB getting it to
perfection. Thanks, divider next then hopefully it will all be OK when
it's built up properly! The MF one does a very good job for what it cost.
Wednesday, January 31, 2018, 3:31:16 PM, you wrote:
> If you only have supply of 0/5V you cannot have a negative '0' level. Â
> If your scope shows it, then it is possible your scope ground is
> not connected properly yo the -ve rail but instead to somehting
> further back showing a small 0.5V drop
> or teh scope needs setting up
> Don't worry about it. The wqaveform looks perfect - very nearly
> 1:1 square wave - its what happens when you do a design properly
> Now worry about sorting out the divider.
> Andy
--
Best regards,
Chris mailto:dead.fets@gmail.com