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 .... ___________ ________________________ |__________| |____ 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 .... _________ _______________ |___________________| |______ 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 .... _______ _______________ |___________________| |________ 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... _____ _____ _____ __ |_____| |_________________| |_____| I'll give them a try. Do you think 0x7D is needing tuning ? (what are CCD CP and CCD RS ?) Regards Guillaume