[time-nuts] Getting my Rockwell D200 GPS to work
Erno Peres
ernieperes at aol.com
Sat Jan 7 14:39:33 UTC 2012
Hi Don,
this type of receiver sometimes need a good 15-20 min to find their place... they are not very sensitive...
also if the receiver comes-up in NMEA mode then they probably used a spec application and it
is much better to config the 20 pin connectors to Rockwell-binary mode and use the " LabMon 49 " software until the receiver alive and then you can config back to NMEA mode.....
Rgds Ernie.
-----Original Message-----
From: shalimr9 <shalimr9 at gmail.com>
To: Time-Nuts <time-nuts at febo.com>
Sent: Sat, Jan 7, 2012 3:21 pm
Subject: Re: [time-nuts] Getting my Rockwell D200 GPS to work
I test all my GPS receivers with a hockey puck type antenna attached to the wall
n my hamshack, which is upstairs, but under the ceiling and the roof and I have
ever had one fail to lock within reasonable time. With this setup, Thunderbolts
ccasionally go on holdover, but never for very long.
Of course, when I plug them in the external Symmetricom antenna, they typically
ee more satellites and don't go into holdover.
I am in Northwest Florida, so probably at a lower latitude than most of you, so
he same setup farther north may not work as well.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-----Original Message-----
rom: Azelio Boriani <azelio.boriani at screen.it>
ender: time-nuts-bounces at febo.com
ate: Sat, 7 Jan 2012 02:00:21
o: Discussion of precise time and frequency measurement<time-nuts at febo.com>
eply-To: Discussion of precise time and frequency measurement
<time-nuts at febo.com>
ubject: Re: [time-nuts] Getting my Rockwell D200 GPS to work
Absolutely yes, the antenna must see the sky, not the ceiling. Even very
ensitive GPS receivers must have a good view of the sky for the first fix,
hen you can bring the antenna indoor. You can try positioning the antenna
ery near a window for just a test but better a good view. The car roof is
kay but you must wait several minutes (12 minutes at most) to let the
eceiver download the almanac.
On Sat, Jan 7, 2012 at 1:54 AM, Don Lewis <dlewis6767 at austin.rr.com> wrote:
> Maybe I didn't take positioning seriously.
The antenna is currently on a shelf above my workbench, ....there is a
ceiling and an upstairs above it. Then the roof.
Is it very critical to be outside in order to 'see' the sky?
I did take it out once and set the antenna on my car roof, ....but still no
satellites.
-Don
-------------------------------------------------------------------------
-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of bownes
Sent: Friday, January 06, 2012 6:49 PM
To: Discussion of precise time and frequency measurement
Cc: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Getting my Rockwell D200 GPS to work
Step one...is the antenna in a location where it can see they sky?
Sorry if it is a stupid question but you already said it was plugged in. :)
On Jan 6, 2012, at 19:24, "Don Lewis" <dlewis6767 at austin.rr.com> wrote:
> Can someone please give me some pointers (my first time with a GPS
module).
>
>
>
> A little hand-holding, pls.
>
>
>
> I bought three of these Rockwell D200 GPS receivers. (It's little GPS PWB
> with an antenna connector and pins for connecting to the RS232- PC)
>
>
>
> All three 'appear' to work the same way (no apparent capture of
satellites).
>
>
>
> Here's what I have:
>
>
>
> 1. VisualGPS installed and running.
> 2. A small USB-RS232 card installed and appears to be operational.
> 3. Small GPS active antenna plugged in.
> 4. VisualGPS monitor just repeatedly displays:
> $GPGGA,,,,,,0,00,,,,,,,*66
> 5. I think I understand this to be NMEA code to mean no satellites
have
> been acquired.
> 6. The Rockwell D200 draws ~180ma (5V) with no antenna and ~190ma with
> the small active antenna plugged in.
>
>
>
> What am I doing wrong? Other than maybe cheap china gps' and antenna???
> But it is what I could afford and thought it would be cheap to learn on.
>
>
>
> Thanks for your help.
>
>
>
> -Don
>
>
>
>
>
>
>
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