[time-nuts] Inexpensive modular gps with 1pps
Sanjeev Gupta
ghane0 at gmail.com
Mon Jan 7 08:00:17 UTC 2013
David, Hal,
Thank you very much for the pointers, and the hand-holding.
I ordered a unit from Sure last month, which arrived last week. I used
David's excellent instructions, and I am happy to report that the unit
(cabled to a 1U Linux server, Debian testing) is working well (or so I
think).
ntpq -pn :
remote refid st t when poll reach delay offset
jitter
==============================================================================
+127.127.28.0 .GPS. 0 l 13 16 377 0.000 -19.214
12.250
*127.127.28.1 .PPS. 0 l 12 16 377 0.000 0.001
0.001
-203.123.48.6 223.255.185.2 2 u 6 64 377 0.107 9.251
0.016
-203.123.48.218 223.255.185.2 2 u 23 64 377 0.160 -6.036
0.045
-118.143.17.82 .MRS. 1 u 29 64 377 88.536 24.006
0.745
#54.251.61.122 158.108.212.149 3 u 18 64 377 7.372 -0.099
1.773
x203.129.68.14 192.168.51.203 2 u 43 64 365 210.371 84.157
0.289
x123.108.109.9 118.143.17.82 2 u 26 64 377 116.259 39.154
0.509
#202.131.74.126 210.0.235.14 3 u 26 64 377 42.854 -1.611
0.610
-192.53.103.104 .PTB. 1 u 53 64 377 353.550 1.066
24.731
-131.188.3.222 .PPS. 1 u 6 64 377 361.439 -7.954
0.625
+133.100.11.8 .GPS. 1 u 10 64 377 105.521 -7.343
1.407
-121.182.147.191 .GPS. 1 u 55 64 377 128.177 3.004
12.558
-2001:df0:232:ee .NICT. 1 u 14 64 377 91.402 0.443
2.651
This server (and others syncing with it) are members of the
sg.pool.ntp.org, and hence hopefully helping others.
The gpsd output is visible here:
http://bit.ly/VwfkAt
To the Time-Nuts in general, thanks a ton.
To David in particular, your instructions are very, very, clear.
My colleague, who soldered the two wires for me, now wants a clock to
display the time in the server room. I shall show him photos of Nixie
clocks :-)
--
Sanjeev Gupta
+65 98551208 http://www.linkedin.com/in/ghane
On Sat, Dec 15, 2012 at 3:15 PM, David J Taylor <
david-taylor at blueyonder.co.uk> wrote:
> Thank you, nice summary.
>
> One of my problems is that I am in Singapore. Soldering is not an issue in
> itself, but I cannot just order transistors and other small components
> online.
>
> You mention "low cost units which require you to add a power connector,
> etc". Could you recommend any that can be bought online? With RS-232,
> please?
>
> Sanjeev Gupta
> ==============================**===========
>
> Sanjeev,
>
> It sounds as if this unit may suit:
>
> http://www.satsignal.eu/ntp/**Sure-GPS.htm<http://www.satsignal.eu/ntp/Sure-GPS.htm>
>
> It has RS-232 (true levels, not CMOS) and requires only two wires to be
> soldered. Order from:
>
> http://www.sureelectronics.**net/goods.php?id=99<http://www.sureelectronics.net/goods.php?id=99>
>
>
> Cheers,
> David
> --
> SatSignal Software - Quality software written to your requirements
> Web: http://www.satsignal.eu
> Email: david-taylor at blueyonder.co.uk
>
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