On Fri, Nov 17, 2006 at 07:13:05PM -0800, Oussama Sekkat wrote:
I am still trying to measure the digital output noise (from the LFRX_A
daughterboard).
[and later:]
I fixed it now by making it a source instead. Thanks.
My output reading from the logic analyzer is now the following constant 16
bit value:
0000 1111 1100 0011
This seems to me a too high of a value since I shouldn't be receiving any
signal. On top of > that, none of the bits are toggling, which doesn't
make sense if it was just noise.
Any ideas on what's going on here?
How is the input to your LFRX connected? The response goes down to DC and
will only be (near) zero with a 50-ohm (at DC) source resistance. Does your
output reading depend on the PGA setting?
-- Don Ward
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