[sane-devel] LiDE 90 half ccd

[Guillaume Gastebois]

> Hello,
> 
> OK, if i understand test values you proposed gives :
> 
> 0xf f0 3f
> bit of 0x79    ! 0x78          !0x77! 0x79
> 0 1 2 3 4 5 6 7!0 1 2 3 4 5 6 7!0 1!0 1 2 3 4 5 6...
> 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 ....
> ___________            ________________________
>            |__________|                        |____
see entropy result on : http://ggastebois.free.fr/lide90_snoop/3f03f.pnm

> 
> 0xff 80 1f
> bit of 0x79    ! 0x78          !0x77! 0x79
> 0 1 2 3 4 5 6 7!0 1 2 3 4 5 6 7!0 1!0 1 2 3 4 5 6...
> 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 ....
> _________                     _______________
>          |___________________|               |______
> 
same as before

> 0xff c0 0f
> bit of 0x79    ! 0x78          !0x77! 0x79
> 0 1 2 3 4 5 6 7!0 1 2 3 4 5 6 7!0 1!0 1 2 3 4 5 6...
> 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 ....
> _______                     _______________
>        |___________________|               |________
> 
same as before

> 0x0 01 c7
> bit of 0x79    ! 0x78          !0x77! 0x79
> 0 1 2 3 4 5 6 7!0 1 2 3 4 5 6 7!0 1!0 1 2 3 4 5 6...
> 1 1 1 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1...
> _____       _____                   _____       __
>      |_____|     |_________________|     |_____|
> 
gray image with horizontal black lines

> I'll give them a try.
> 
> Do you think 0x7D is needing tuning ? (what are CCD CP and CCD RS ?)
> 
> Regards
> Guillaume

I'll now try with clk1 and clk4.

Regards
Guillaume