I am working with a piezo gyro that puts out a bit of noise/jitter in =
its output.  I have a couple of different op-amp filter circuits I've =
thrown together to see how well they clean up the output of the gyro, =
but at the same time not screw with the bandwidth of the gyro's output.  =
The gyro puts out approximately 2.5v at a steady state, and goes up/down =
from there depending on the direction of rotation.  I have been trying =
to measure the noise level of the output with my scope without success; =
I assume it is because I don't have anything to trigger off of.  My =
guess is that I need a function generator (which I don't have at the =
moment, but one is on the way) tied into the external trigger input of =
the scope and "sample" that way.  Can anyone tell me that I'm correct in =
my thinking?  What frequency should I use to sample the output?
=20
Also, it seems my scope is a bit out of calibration (Tek 475).  I have =
just located some manuals on ebay; is it difficult for one to calibrate =
this scope, or should I be looking to send the scope off somewhere to be =
calibrated?
=20
thanks,
=20
Bob

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