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RE: Re: Mv1000 camera issue


  • To: <ukha_d@xxxxxxx>
  • Subject: RE: Re: Mv1000 camera issue
  • From: "Keith Doxey" <ukha@xxxxxxx>
  • Date: Mon, 2 Jun 2003 19:00:50 +0100
  • Mailing-list: list ukha_d@xxxxxxx; contact ukha_d-owner@xxxxxxx
  • Reply-to: ukha_d@xxxxxxx

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.  Worked ok with a 220 or 100ohm on it's own but
> not sure what effect this would have longer term (Keith?).  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.



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