ALV-7002, ALV-7004 and ALV-7004/FAST Hardware Features - Two/fourfold Multiple Tau Digital Correlation Scheme (16/8), Auto Correlation and Cross Correlation - TWO (ALV-7002) OR FOUR (ALV-7004 and ALV-7004/FAST) INDEPENDENT CORRELATORS, all correlation functions are computed at 100% real-time using one of the following correlation modes ALV-7002: AUTO0, AUTO1 or CROSS 0/1, CROSS 1/0 - ALV-7004 and ALV-7004/FAST: AUTO0, AUTO1, AUTO2, AUTO3 or AUTO0, AUTO1, CROSS 0/1, CROSS 1/0 or AUTO2, AUTO3, CROSS 2/3, CROSS 3/2 or CROSS 0/1, CROSS 1/0, CROSS 2/3, CROSS 3/2 - 100 ns initial sampling time (ALV-7002), 100 ns ... 219902,4 s lag time range 25 ns initial sampling time (ALV-7004), 25 ns ... 54975,6 s lag time range 3.125 ns initial sampling time (ALV-7004/FAST), 3.125 ns ... 54975,6 s lag time range Additional user selectable 100 ns initial STC “compatibility mode” for auto correlation experiments for ALV-7004 and ALV-7004/FAST. - max. 2 x 312 correlation channels (ALV-7002) max. 4 x 312 correlation channels (ALV-7004) max. 4 x 336 correlation channels (ALV-7004/FAST) - “Symmetric Normalization”, individual channel and sampling time block monitor channels for every correlation channel (but the first 16) and sampling time group - ALV-7002 : 35 Mcps sustained (90 Mcps peak) max. input count rates, no scaling required ALV-7004 and ALV-7004/FAST : 80 Mcps sustained (160 Mcps peak) max. input count rates, no scaling required