[time-nuts] Lassen IQ receiver
rdarlington at gmail.com
Sat Oct 11 06:29:07 UTC 2008
As far as alternating, you'll get the various NMEA strings in the order you
choose (and the strings you choose) once a second. You won't get one, then
the other, then back to the first. It'll be several all at once, and that
block will repeat once a second. I suppose you could select just the two
you want, but they'd come in on the same data burst, repeating once a
<1 second pause>
<1 second pause>
I don't know for sure if you can have port 1 setup with a particular set of
NMEA data strings and port 2 setup with a different set. Assuming you can't
do that (meaning they have to be the same NMEA data), you can probably have
both ports spit out everything you'd need and ignore what you don't need in
On Sat, Oct 11, 2008 at 12:12 AM, Morris Odell <vilgotch at bigpond.net.au>wrote:
> Thanks for the reply Bob!
> Does this mean it's not possible to get two alternating NMEA messages from
> the same port? I have all the Trimble (IQ_chat and IQ_monitor) utilities
> use port 1 to communicate with a PC using TSIP. I have port 2 connected to
> microcontroller and I want to get both strings alternating with each other
> so I can translate them into a different serial code for a particular
> application. Alternatively the TAIP message TM has all the info I need in
> one sentence, but I can't seem to make it appear :-(
> It's definitely an IQ not a SQ.
> > From: "Robert Darlington" <rdarlington at gmail.com>
> > I use them for non-time keeping things. You need to use the
> > tool to configure the ports so that they both spit out NMEA, and the
> > particular NMEA strings you want to see, and then save the configuration.
> > Otherwise you get NMEA out of one port and the Trimble binary format out
> > of
> > the other. Do you have a copy of the software? You can find it here:
> > http://www.trimble.com/embeddedsystems/lasseniq.aspx?dtID=support
> > Also, make sure you have the IQ and not the SQ. The SQ only has one port
> > but is otherwise pin compatible.
> > On Fri, Oct 10, 2008 at 8:36 PM, Morris Odell
> > <vilgotch at bigpond.net.au>wrote:
> >> Hi all,
> >> I'm using a Trimble Lassen IQ receiver for a Shera style GPSDO. That
> >> works OK but I would also like to get serial data from the receiver's
> >> output
> >> port #2.
> >> The receiver seems to respond to commands sent to port #1 but the
> >> outputs don't seem to appear.
> >> Specifically I want to get two NMEA messages, GGA and ZDA, or
> >> alternatively
> >> the TAIP TM timing message. No matter how I instruct the receiver I
> >> see two NMEA messages, just the first one on the list I've sent to the
> >> receiver. The TAIP doen't seem to work at all.
> >> Am I missing something here? Has anyone had any success with this
> >> Thanks,
> >> Morris
> > Looking more closely at the software list, I don't see the utility that I
> > use. Whatever it is, it's a DOS based thing or is at least a shell ap
> > with
> > just text. I'll dig up the zip file at work when I'm in the office over
> > the
> > weekend and get it over to you if I still have it. I've used it
> > successfully to configure both ports to dump NMEA with varying output
> > strings.
> > -Bob
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