Recent content by Chrispp

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    Calculating DC Offset for 19 High Bits Followed by Low Bit

    If I have a string of 19 continuous bits 'high' followed by a bit 'low', how do I calculate the DC Offset if the pattern is repeated? Is it just [(19 - 1)*(the amplitude)]/(20)? Thanks for the help. Chris
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    Passing SD and HD video through a HPF

    As a follow-up from before, I've had another discussion recently with the boss as he was away at a trade show for the past few days. All I think he did was confuse me a little bit more, so any help is still greatly appreciated. He told me that we are talking about exactly the same driver for...
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    Passing SD and HD video through a HPF

    So tomorrow is d-day. Based on the information I was given (apparently not much) is this what I should relay to my boss? It seems to me that he would have probably have realized that different chip drivers will cause a different output resistance, resulting in weird capacitance values..., but...
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    Passing SD and HD video through a HPF

    I do not know exactly where the capacitor is because I have no exactly been told. ALL I was given from my boss was the diagram of a HPF, and the equation f = (2*pi*R*C)^-1. He then told me he was using PLL test for both SD and HD video and came up with results that anything lower then 1uF kills...
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    Passing SD and HD video through a HPF

    I believe we are using different chips to drive the signals in this case, as I know we do on a couple of different boards. I will have to check into specifics on Monday. Thanks for the help everyone, and enjoy your weekend :) Chris
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    Passing SD and HD video through a HPF

    Thanks for the help so far, Here's a link to some of the parts that are in consideration: http://www.gennum.com/video/vtt.htm The tolerance is infact dealing with a desired opening of the eye diagram. The characteristics of the transmission lines are identical and has already been checked...
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    Passing SD and HD video through a HPF

    Hey there, thanks for the reply. So the whole question came about when my boss came to me with a little project asking why this might be the case. I do not know the details of the experiment that they were doing but he just asked for possible reasons why this could be happening, in any...
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    Passing SD and HD video through a HPF

    Good morning I have been browsing this forum for quite sometime finding very valuable information, but now I have a question of my own. The very basic principles of RC HPF's tell us that all else equal the frequency and the value of the capacitance are inversely related. This suggests that the...
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