Digital I/O
6009 analogue to digital conversion
Hi Dave_Wex,
you're actually talking about an algorithm to interrogate the analog acquired signal and find out a pulse width.
There's a couple of ways to do this.
First, timing is the key. Open up one of the analog input examples, and you can then take the signal acquired, search it for values where it first goes over the 2.5V mark, and then for the first time it drops back below.
A possible algorithm in LV 7.1 is below.
This requires at least 2 pulses to work for the top algorithm, one pulse for the second algorith (only works with a single pulse acquired), and only analyses the first pulse fpr the bottom algorithm
Please let me know if that helps
Sacha Emery
National Instruments (UK)
you're actually talking about an algorithm to interrogate the analog acquired signal and find out a pulse width.
There's a couple of ways to do this.
First, timing is the key. Open up one of the analog input examples, and you can then take the signal acquired, search it for values where it first goes over the 2.5V mark, and then for the first time it drops back below.
A possible algorithm in LV 7.1 is below.
This requires at least 2 pulses to work for the top algorithm, one pulse for the second algorith (only works with a single pulse acquired), and only analyses the first pulse fpr the bottom algorithm
Please let me know if that helps
Sacha Emery
National Instruments (UK)
