[[ntpgps]]

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ntpgps [2016/02/26 10:02]
admin
ntpgps [2016/02/26 10:19]
admin
Line 83: Line 83:
 mintc=3, offset=0.492, frequency=22.723, sys_jitter=0.044, mintc=3, offset=0.492, frequency=22.723, sys_jitter=0.044,
 clk_jitter=0.000, clk_wander=0.145</code> clk_jitter=0.000, clk_wander=0.145</code>
 +
 +
 +====== To D0 & Thoughts ======
 +Right now my offset and jitter can be improved. This can be done by:
 +  * Disable all but GPGGA
 +  * Push pulse width to 200ms
 +  * Some people don't like, and have trouble with, the 18x LVC:
 +    * http://support.ntp.org/bin/view/Support/ConfiguringGarminRefclocks
 +  * Similar to above:
 +    * http://support.ntp.org/bin/view/Support/ConfiguringNMEARefclocks
 +    * I think it's worth noting that my jitter is WAY lower than being reported there. One guy is setting 5-10ms jitter while I am seeing <0.024ms jitter. Either that guy has a bad unit and is being a negative nancy, or firmware updates have made them notably better.
 +  * Get serial pass-through working on the TS140. This will take some tinkering but should be doable. Latency is my only concern.
ntpgps.txt ยท Last modified: 2020/02/21 12:04 (external edit)
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