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> Datum lpro 10MHZ rubidium oscillator
Datum lpro 10MHZ rubidium oscillator
OK such as LPRO with the at least 10 year offical warranty of lamp life
so the date of made is the OK
Symmetricom's Irvine operation, originally known as Efratom, was founded in 1972 and purchased by Datum in 1995 from Ball Aerospace. Several industry firsts and patents were established by Efratom and Datum-Irvine......
from above line...we can guess the efratom-datum-symmetricom now...
so the datum label LPRO meanning better life time...
you find the different from the serial number
The LPRO is designed for long operating periods without maintenance (long life Rb lamp, extended crystal control range) with a goal to exceed 10 years. The design provides a stable frequency with good short and long term stability, and excellent spur performance.
PDF format manual for this module
http:// /media/pdf/manuals/man-lpro.pdf
Single 24 Vdc Supply; Wide Operating Supply Range (19 to 32V)
Meets TDMA and GSM Frequency Requirements Without an External Reference or Routine Calibration
following spec from http:// /museum/lpro/ Thank you for tvb
[2005-07-08 09:15:46] 1,013,412 log20696.txt 84451 seconds (= 23 hours)
Stability from Tau 0.1s to Tau 20k
