RE: Re: Mv1000 camera issue

["Dave McLaughlin" <dave@xxxxxxx>]

Hi All,
=A0
Correct me if I am wrong (and I bet you will) but won't the 75 ohm
termination plug do the same thing. The input to the MV1000 is designed to
be high impedance so that you can daisy chain onto another device. I assume
this is the case, because of the termination plugs. You need to use these
with the T pieces.
=A0
Dave...
=A0

-----Original Message-----
From: Keith Doxey [mailto:ukha@xxxxxxx]
Sent: 02 June 2003 19:01
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Re: Mv1000 camera issue


The only effect of going too low is that the signal would be attenuated to
such a level that the picture would be dark and possibly unstable.

Keith

www.diyha.co.uk
www.kat5.tv


> -----Original Message-----
> From: Steve Cooper [mailto:steve.cooper@xxxxxxx]
> Sent: 02 June 2003 18:38
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Re: Mv1000 camera issue
>
>
> --- In ukha_d@xxxxxxx, "Keith Doxey" <ukha@d...>
wrote:
> > It may be that the input to the MV1000 is AC coupled and the
camera
> requires
> > a DC termination.
> >
> > Try connecting a resistor in parallel across the input. Start
with
> 1Kohm and
> > work down until you get a decent picture without too much
> attenuation of the
> > signal.
> >
>
> Keith to the rescue again, if you put a 2 x 220ohm resistors (i.e.
> 440ohms which is what I had handy) across the signal and ground the
> cameras work fine.=A0 Worked ok with a 220 or 100ohm on it's own but
> not sure what effect this would have longer term (Keith?).=A0 I'm
> guessing it should be as high as possible 1Kohm gives distortion
> though.
>
> Also make sure you get a signal on a TV first if you are using scart
> to scart connector as some of the ground pins may not be commoned
> together.
>
> S.


=A0


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