OK Marki, I have a Z3816 with a possible bad 5 MHz oscillator. Maybe I can
swap out the GPS rcvr. I have to see if they are compatible. Does anyone out
there know?
Tnx,
George
----- Original Message -----
From: "Mark C. Stephens" <ma...@non-stop.com.au>
To: "Discussion of precise time and frequency measurement"
<time-nuts@febo.com>
Sent: Monday, July 22, 2013 12:32 PM
Subject: RE: [time-nuts] Z3801A Freq jumping
George,
Looking at your graph, as far as I can see, the EFC jumps appear to be
tied to the TI
From the graph, your hitting +/- ~750ns. Normally, one sees +/- ~50ns. nax
(although one particular basket case I have goes up into the milliseconds
occasionally,
It is a defective GPS module, I have proved this by swapping the module
with another unit and the fault follows the GPS module.)
I am not sure of the mechanics of how the EFC follows TI, perhaps one of
the other members can chime in?
-marki
-----Original Message-----
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of George Sintchak
Sent: Tuesday, 23 July 2013 1:30 AM
To: time-nuts@febo.com
Subject: [time-nuts] Z3801A Freq jumping
Hello all - Not sure what's happening to my Z3801A. Doesn't unlock, but
EFC jumping all over.
Is my oven controller dieing? I did a reacquire satellites abt 10 days
ago - no difference.
See plot below of the last ~36 days. Any thing to try - restart from cold,
etc ???
George
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