The only unit I know about that uses the Furuno receiver is the Z3805.
The earlier standards used the Motorola Oncores. My Z3816 has a UT+
version. Another post tonight says the Z3801 uses the VT version, which
sounds right. These Z38xx's have some similarities but also significant
differences between each other.
The time order in which these references were produced (older to newer)
is: 3801, 3816, 3805. That aligns with the different GPS receivers that
were used inside.
Robert Benward wrote:
Hi Rex,
One more question: I understand some of the Z3801A were equipped with
the Furuno 16ch GPS. Do you know the model of this GPS, or was it only
for the Z3805A or the Z3816A?
Thanks,
Bob
----- Original Message ----- From: "Rex" <[email protected]>
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Sent: Tuesday, June 01, 2010 8:28 PM
Subject: Re: [time-nuts] Motorola GPS Z3801A
Robert Benward wrote:
Hi,
Does anyone have the pinouts for the Motorola GPS within the
Z3801A? It's a ten pin header and I would like to intercept the
data stream to see if it's working. Also, I read about some of the
Motorolas putting out binary data, not NEMA protocol.
Thanks,
Bob
The Oncore interface diagram on Didier's page should be enough to see
which pins are which:
http://www.ko4bb.com/cgi-bin/manuals.pl?dir=05%29_GPS_Timing
For the details, here's a link to a nice clean Oncore manual:
http://gpsd.berlios.de/vendor-docs/motorola/
Chapter 6 of that manual is a description of the Oncore commands that
are used by these receivers. Yes, it is a mixture of ASCII commands
with binary data.
I forget which receiver(s) the Z3801A used. My Z3816a has a UT+ but
it is a little more recent than the 3801's. Someone here, no doubt,
remembers.
A few years back there were a bunch of posts to this list with
reference documents for the various Oncores that HP or Symmetricom
used in the timing receivers. Lots of detail of firmware versions and
differences between the Oncore receivers. I don't have a link now.
Maybe others do.
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