Hi Rob,
I tried to find a quick way to obtain graphs, and settled using Excel, actually
collecting some data but I need to bring the thing with me on a travel so It
would take some days to collect like one week of meaningful data in a "stable"
room, with logged temperature. Time permitting, I would implement MRTG/Cacti
whatever.
This is a very short extract so far:
MJD s since mid Clock PPM f RMS
RMS Clock discipline loop time constant
offset Offset
jitter wander
59567 80590.679 -0.000000304 -12.205 0.000000954 0.000141
3
59567 80611.861 0 -12.225 0.000000954 0
3
59567 80619.845 0.000007995 -12.221 0.000002964 0.001384
3
59567 80627.845 0.000006833 -12.218 0.000002803 0.001753
3
59567 80635.845 0.000003494 -12.216 0.000002876 0.001747
3
59567 80643.845 0.000003515 -12.214 0.000002711 0.001743
3
59567 80651.845 0.000002159 -12.213 0.000002581 0.001673
3
59567 80659.845 0.000001592 -12.212 0.000002438 0.001588
3
59567 80667.845 0.000001244 -12.212 0.000002305 0.001501
3
59567 80675.845 0.000001239 -12.211 0.000002182 0.001421
3
59567 80683.845 0.000001557 -12.211 0.000002069 0.001356
3
59567 80691.845 0.000001607 -12.21 0.000001965 0.001298
3
59567 80699.845 0.000001639 -12.209 0.000001868 0.001247
3
59567 80707.845 0.000001634 -12.208 0.00000178 0.0012
3
59567 80715.845 0.000001673 -12.207 0.000001699 0.00116 3
59567 80723.845 0.000002483 -12.206 0.000001624 0.001166
3
59567 80731.845 0.000001907 -12.205 0.000001556 0.001139
3
59567 80739.845 0.000001778 -12.204 0.000001494 0.001109
3
59567 80747.845 0.000001579 -12.204 0.000001438 0.001073
3
59567 80755.845 0.000001903 -12.203 0.000001387 0.001056
3
59567 80763.845 0.000001575 -12.202 0.00000134 0.001024
3
59567 80771.845 0.000002168 -12.201 0.000001298 0.001028
3
59567 80779.845 0.000002064 -12.2 0.00000126 0.001027
3
Clock offset is less than 8us(and decreasing), so how come ntpstat gives clock
accuracy within 2ms?
BTW, I took a peek at PTP, simply overkill for my needs at the moment.
Giuseppe Marullo
IW2JWW - JN45RQ
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