Turning a variable into a digital

[mikee boy]

I record when the brakes are applied by taking the feed from the brake pressure switch but this gives a value between 9 and 14 volts. How do I manupulate this so my graphs are flat-topped rather than frilly as a result of voltage variation. i.e. I' like everything > 4v to be 1, and everything below to be 0.

Thanks in advance

Mike

[DaveTurner]

Use the 'IF' operator, i.e. in the calibration for the channel use the scaling (IF x>4,1,0) then when ever the voltage is above 4v you get a 1, otherwise you get a 0 output.

[mikee boy]

Awesome Dave

Thanks

[pault]

Can you give the exact syntax for the IF? It doesn't come up in my install.

Thanks,
Paul

[DaveTurner]

From the local help:

IF: eg IF(b, case1, case2), If b is not 0, then it returns case1, else it returns case2.