Pulse width and Freq measurement with SX48. How ?

RS_Jim

Good evening,
I don't have a scope but would like to do some pulse width measurement along with the frequency of the pulse.· Is the counter/timer in the SX-48 a workable solution?· I know how to make it do a pwm pulse but am not sure about using the timer functions.· the pulses I am trying to measure are in the 200 to 400 KHz region.
Jim

Post Edited By Moderator (Bean (Hitt Consulting)) : 8/29/2008 11:13:38 AM GMT

Velocit

According to the SX/B documentation, the COUNT command should work just fine. I'm not sure exactly what kind of waves you'll be measuring, but assuming a 50% DC at 400kHz, the SX would need to be running at at least 40MHz.

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-Paul

Bean

Yes, use COUNT to get the frequency and PULSIN to get the width.

Bean.

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·

Professorwiz

When you use the·PULSIN from something like an RC receiver, are you supposed to put current limiting resistors in series with it?· Similar question for the·COUNT command.

RS_Jim

Ok, I have used PULSIN but some of my pulse widths seem to be less than the 10 Microseconds that it is expecting as a minumum pulse width for the command.
Jim