[TechAssist] Re: Delay line
- From: "Jerome Silverman" <greentron@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 30 Jun 2005 20:47:46 -0400
If the impedances are not matched, you get reflections that show up as
ghosts, and if the output polarity is not correct and its being used in a
comb filter it will increase the noise instead of cancelling it. Some delays
are just used to equalize the luma and chroma processing times.
Jerry Silverman
Greentron Inc
4 Newland Ave Greenville SC 29609
Fax/Phone 864 232 3889
greentron@xxxxxxx
----- Original Message -----
From: "Paul" <dntwntv@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, June 30, 2005 3:25 PM
Subject: [TechAssist] Re: Delay line
> That is why I am not sure if I can find anything that will work that isn't
original.Of those parameters that you mentioned,the time and attenuation I
would say, are the most important.
>
Paul
> J Silverman <greentron@xxxxxxx> wrote:
> There are about four parameters for a delay line. The delay time, the
input
> and output impedance, the attenuation, and the output polarity.
> Jerry Silverman
> Greentron Inc
> 4 Newland Ave
> Greenville SC 29609
> Fax/Phone 864 232 3889
> mail to: greentron@xxxxxxx
> ----- Original Message -----
> From: "Paul"
> To:
> Sent: Thursday, June 30, 2005 2:11 PM
> Subject: [TechAssist] Re: Delay line
>
>
> > Ed
> > The delay line in this set was damaged by beer spilled in it. The delay
> line has an open in it now. I can jump the open and the picture is good.
The
> question I have is this. There are three delay lines in this set they are
> all different nanosecond values. Doesn't this matter as to the amount of
> delay time? I have experimented using different caps to jump with and a
> .68mfd seems to work the best but there seems to be something breaking
down
> after a while. I am afraid of over stessing something else and creating
more
> problems.
> >
> Paul
> > Ed Gaidies wrote:
> > Paul..
> >
> > I don' think there is much difference between one Delay Line over
> > another. Especially if you use a scrapped one from a Mits, about the
> > same vintage.
> >
> > Physical size restrictions would be the only problem.
> >
> > I won't ask why you would want to change it, unless it was damaged.
> >
> > Just meant to delay video from chroma...check your scrap pile.
> >
> > -Ed-
> > On Jun 29, 2005, at 7:18 PM, Paul wrote:
> >
> > > Is there such a thing as after market dealy lines? I need a NLA
> > > mitsubishi 245ns delay.
> > > P/N337P189010. It is for a
> > > CS27201.
> > > Paul
> > >
> > > Paul ,B
> > > Central TV&Video
> > > 911W Grand Ave
> > > Grover Beach Ca.
> > > (805)481-8084
> > >
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> > Paul ,B
> > Central TV&Video
> > 911W Grand Ave
> > Grover Beach Ca.
> > (805)481-8084
> >
>
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> Paul ,B
> Central TV&Video
> 911W Grand Ave
> Grover Beach Ca.
> (805)481-8084
>
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