Has anyone used the thunderbolt PPS output with a N8UR FatPPS? I'm seeing
a large (+-100-300us) amount of jitter on the output of the FatPPS. This same
setup works fine with the input from z3801a (using a PECL/TTL converter)
or the Fury (even though the Fury's pulse is wide enough to begin with).
Is there something special about the thunderbolt PPS output? I noticed it
seemed to require 50ohm termination to get a clean signal when I connected
it to a counter (5334a) with a 3 foot cable.
I'm using the FatPPS in conjunction with a soekris 4501 with the tmrin mod.
Scott
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