[time-nuts] z3801a gps signal reflection and EFC woes
SAIDJACK at aol.com
SAIDJACK at aol.com
Thu Dec 3 01:41:18 UTC 2009
Hi guys,
I wonder if anyone has ever replaced the 1PPS output of the oncore with an
external 1PPS from say an M12M receiver.
I would suspect all else being the same that the Z3801A would work much
better, and not have the problems Mike is seeing?
bye,
Said
In a message dated 12/2/2009 04:46:58 Pacific Standard Time,
michael.cook at wanadoo.fr writes:
You can see that the EFC immediately tries to follow the value calculated
during the incident, regardless of any historical data the box is holding,
if any. I haven't yet checked to see how much the violent swing in EFC
effects the 10MHz output, but I suppose there must be some.
I have tried 2 different VPs , but they appear to be suffering the same
issue. Both have different firmware levels.
Anyone seen this and know of a way of limiting the effect? I have thought
about moving the Z3801A to my south balcony, where I shouldn't see so many
reflections, or better, to the appartment roof, but that needs permission
from the management.
Mike
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