[time-nuts] Getting my Rockwell D200 GPS to work

[bownes]

It will certainly help to have visible sky and a metal ground plane. I have mine in a skylight in my office and they still only 'see' about half of the sky due to the slope of the skylight and living on the south side of a hill. 

So, putting one where it actually can see the sky and letting it sit for 20-60 minutes would tell you something more. 


On Jan 6, 2012, at 19:54, "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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