[ntp:questions] Trying to use Dimension 4 time keeper

W. eWatson wolftracks at invalid.com
Wed Sep 11 01:47:19 UTC 2013

>>>> I tried Meinberg for quite some time, but it flops fairly often. As I
>>> flops? What are the symptoms? Also, if time is important why not invest
>>> in a GPS (35 dolalrs or so) with PPS.
>> It moves many seconds in a short time, say a day or two. How is GPS
>> going to help? Does it provide access via a USB port.
> It-- which noun does that "it" point to?
> Sure, you can have gps provide access via a usb port. The Sure GPS even
> has a usb port on board that you can directly connect to. It is not
> great timekeeping but you can probably get it to within .1 sec or so.
> The main problem is that you cannot use the PPS via a usb connection, so
> you have to rely on the timing from the nmea sentences. Run the usb port
> as fast as possible (high baud rate), and after some observation with
> the machine connected to the internet as well, determine what the usb
> data time offset is and subtract it out using the time2 option to the
> driver.
It = GPS. What is PPS?

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