when comparing bottom sides of ref0 and ref1 boards IC U207 near antenna
input of ref1 seems to be missing.
Goetz
-------- Original-Nachricht --------
Betreff: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812...
Datum: Sun, 26 Oct 2014 22:24:29 +0000
Von: Anthony Roby <ar...@antamy.com>
Antwort an: Discussion of precise time and frequency measurement
<time-nuts@febo.com>
An: Discussion of precise time and frequency measurement
<time-nuts@febo.com>
Hal - there's nothing coming out of those connectors. I'll explore
again once I can get my GPS connected to the unit and see if that
changes anything.
-----Original Message-----
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Hal Murray
Sent: Sunday, October 26, 2014 4:11 PM
To: Bob Stewart; Discussion of precise time and frequency measurement
Cc: hmur...@megapathdsl.net
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812...
b...@evoria.net said:
Thanks for more pics. Was there any indication of where the 10MHz
gets its signal? Could you see a trace, or did I miss that in the
pics? I'm a bit too ham-fisted to go prodding around in mine, so I've
left it closed after an initial urge to see the top of the board.
If you look carefully at the pictures showing the bottom of the
connector area on the 10 MHz and Antenna connectors you can see that the
connectors don't share any mounting/connecting holes on the PCB.
If you want 10 MHz out of the unit with the GPS module, you can get it
from the center pin of the unused connector. (You may have to add other
parts to get 10 MHz over there.)
An alternative migh be to move the antenna connector on the GPS module
from the bottom to the top, then use a pigtail lead to the panel. That
may not work. From the pictures, it looks like power to the antenna is
added to the trace on the bottom of the board.
--
These are my opinions. I hate spam.
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