We have been running long term tests on a TXO  chip we use for time keeping vs 
line frequency vs NIST time.

Over 4 years the TXO is within 4 minutes
Line Frequency 9 minutes

The TXO is well within specification - and the line frequency is off because we 
lose power in our leafy Boston suburb a lot - and the control fall over to an 
older time keeping chip.




Thomas D. Erb
p:        508-359-4396
f:        508-359-4482
a:        97 West Street, Medfield, MA 02052 USA
e:         t...@electrictime.com
w:        www.electrictime.com
Tower & Street Clocks Since 1928

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