[time-nuts] Garmin GPS17

[mike cook]

A stab in the dark. I don't have one of these.

 The doc I find says that these are supplied with a rechargable lithium cell 
which enables back up of GPS data . It is supposed to last 10yrs, so if 
yours is reaching retirement age it may have gone awol and dropped the 
serial parameters to a state which your monitor is not set too.
So you could try all the baud rates listed in the specs. Use a terminal 
emulator instead of the monitor program, which appears to be a graphic app, 
to see if you getting any data output .

default appears to be 9600,8 bit,no parity

  Serial Interfaces
  a.. Port 1: True RS-232 output, asynchronous serial input compatible with 
RS-232 or TTL voltage levels, RS-232 polarity
  b.. Port 2: Asynchronous serial input only, compatible with RS-232 or TTL 
voltage levels, RS-232 polarity
  c.. Baud Rates
  d.. 300/600/1200/2400/4800/9600/19200
  e..
Serial Formats
  a.. Port 1: Selectable between NMEA 0183 v2.00, NMEA 0183 v3.00, and 
Garmin® binary formats; NMEA 0183 v2.0 (ASCII); Approved output sentences: 
GPALM, GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, GPVTG; Proprietary sentences: 
PGRMB, PGRME, PGRMF, PGRMM, PGRMT, PGRMV

----- Original Message ----- 
From: "Neville Michie" <namichie at gmail.com>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Saturday, October 31, 2009 9:15 AM
Subject: [time-nuts] Garmin GPS17


>
> Hello all,
> I have a Garmin GPS17 HVS which is a GPS receiver/antenna  in one unit.
> When I first bought it I used it to discipline an HP10811 OCXO. One  day 
> it stopped
> responding to its monitor program.
> I got a TBOLT which has kept me busy and now I want to compare it to  the 
> Garmin.
>
> Although I used to be able to run the monitor program and it does not 
> respond any more,
> if you put it under the sky and power it up, after a while you get a  PPS 
> out of it that is
> in phase with the GPS.
>
> So there is somebody home but they have turned out the lights.
>
> The Garmin manuals mention failure to respond if you do the wrong thing,
> Can anyone help me get it going again?
>
> Cheers,
> Neville Michie
>
>
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