Re: [time-nuts] usb gps devices

2012-09-27 Thread Magne Mæhre
On 09/27/2012 12:32 AM, DaveH wrote: This has a 1PPS pin (pin 40) - don't know if it is brought out onto the board but it's there. https://www.sparkfun.com/products/11058 Yes, it is available on one of the edge pads. --Magne ___ time-nuts mailing

[time-nuts] usb gps devices

2012-09-26 Thread Don Latham
Have any of the 'nuts hacked one of the very simple very cheap GPS USB devices for your car top to see if there is an available 1 sec tick inside one of them somewhere? I have one that I intend to look at, but I'll have to get a scope and teenyweeny probe outside to do it, so, if there is a

Re: [time-nuts] usb gps devices

2012-09-26 Thread David
The pulse per second output on the Garmin serial/CMOS interface units is only specified to be within 1 microsecond. I guess they are commonly used to synchronize NTP servers where any extra precision would be lost in network transport anyway. I have been thinking of picking one up cheap to test

Re: [time-nuts] usb gps devices

2012-09-26 Thread Hal Murray
d...@montana.com said: Have any of the 'nuts hacked one of the very simple very cheap GPS USB devices for your car top to see if there is an available 1 sec tick inside one of them somewhere? I took one apart. It had a GPS module with a part number that was easy to look up on the web. Yes,

Re: [time-nuts] usb gps devices

2012-09-26 Thread lists
@febo.com Reply-To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: [time-nuts] usb gps devices Have any of the 'nuts hacked one of the very simple very cheap GPS USB devices for your car top to see if there is an available 1 sec tick inside one of them somewhere

Re: [time-nuts] usb gps devices

2012-09-26 Thread DaveH
, 2012 13:34 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] usb gps devices d...@montana.com said: Have any of the 'nuts hacked one of the very simple very cheap GPS USB devices for your car top to see if there is an available 1 sec tick inside one

Re: [time-nuts] usb gps devices

2012-09-26 Thread dlewis6767
, September 26, 2012 3:31 PM To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] usb gps devices The pulse per second output on the Garmin serial/CMOS interface units is only specified to be within 1 microsecond. I guess they are commonly used