[ntp:questions] almost decided which new PPS GPS to buy
Ron Frazier (NTP)
timekeepingntplist at c3energy.com
Mon Mar 5 18:23:26 UTC 2012
On 3/5/2012 12:30 PM, Chris Albertson wrote:
> On Sun, Mar 4, 2012 at 8:30 AM, Ron Frazier (NTP)
> <timekeepingntplist at c3energy.com> wrote:
>> C) Get the unit working with NMEA data from the RS-232 port, going to a real
>> serial port. I have to tinker with the motherboard on another computer to
>> do that.
> You can buy a serial port adaptor card are that fits in a PCI slot.
> But this assumes you have a desktop PC with a PCI slot.
> The cards are cheap, they start at about $10. I'm shopping for a four
> port card and they are only a bit over $20. Seems I'm collecting
> serial devices. I have two GPSes, a Motorola "Oncore" and a Trimble
> "Thunderbolt". The Rubidium oscillator needs rs-232 also and I just
> finished a PitTic II. (
> http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:picric )
> I bought an Intel "Atom" powered motherboard. This thing uses so
> little power there is not cooling fan. At my cost for power the 85$
> computer will pay for itself in 2 years. It was cheaper to spend the
> $85 than to use some old free PC.
> Chris Albertson
> Redondo Beach, California
Only one of my PC's is a desktop with slots. The others are laptops.
The desktop does have one serial port with a header on the motherboard.
I think I've about narrowed down the proper adapter to bring that out to
a DB-9 port on the rear panel. I'm going to try that first. Then, if I
need more ports, I might need to add a card like you mentioned. Thanks
for the tip.
What you said about the atom and its power consumption is interesting.
Laptops are also good from a power draw point of view.
(PS - If you email me and don't get a quick response, don't be concerned.
I get about 300 emails per day from alternate energy mailing lists and
such. I don't always see new messages very quickly. If you need a
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timekeepingdude AT c3energy.com
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