David J Taylor wrote:
John Ackermann N8UR wrote:
Hal Murray wrote:
There is only one GPS receiver and, of course, one PPS hardware
signal. How could the PPS signal be present on one server and
absent on the other in the same time ? This is my problem and I
suspect 50% the hardware on the motherboards and 50% the software
(OS + NTP) !
What is the PPS pulse width coming out of the GPS? A pulse that's too
narrow won't be seen by the PC serial port hardware/software.
[]
John
The GPS18 LVC pulse is 100 ms by default, although it can be programmed
from 20 ms to 980 ms.
That should be more than long enough. So much for that theory...
John
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