Stewart Campbell <[email protected]> writes: > Hi, > I am using the extra four inputs on the TeleMega to provide logging > of my servo PWM commands on my Vertical Trajectory System. I was > wondering what filtering you have on those inputs and what the logging > rate is please?
It sounds like you're just using the extra pyro channels as inputs? Not exactly what we designed it to do; but I can't see why it wouldn't work? > I see there is no capacitor for filtering the input, just a voltage > divider, so I assume you are using an IIR filter (or Kalman?) of some > sort since the logging trace is quite clean :-) No filtering at all. We log the raw data. > . I am trying to figure > out if I should be able to see signals in the region of 2.5Hz (give or > take) or perhaps a little faster, or be able to estimate any attenuation > or phase shift I might be seeing. Well, we sample at 100Hz, but only log once ever 32 samples. If you want to hack up the firmware, you can get it to log at 100Hz quite easily. -- -keith
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