just test for 24hour later..not very good ,need some more time.
Frequency Drift Rate = -55.37 nHz/sec; -4.784 mHz/day; -5.537E-15/sec; -4.784E-10/day;
MTIE
TDEV
Tau=4.990 sec; Root Allan Variance=3.801E-9
Tau=9.947 sec; Root Allan Variance=2.690E-9
Tau=99.15 sec; Root Allan Variance=8.354E-10
Tau=1.019 ksec; Root Allan Variance=2.752E-10
Tau=10.00 ksec; Root Allan Variance=1.694E-10
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://www.symmetricom.com/media/pdf/manuals/man-lpro.pdf
Key Features
10 MHz Sine Wave
1.5 Inch Total Height
<5e-11/month Aging
Single 24 Vdc Supply; Wide Operating Supply Range (19 to 32V)
Alarm Signal for Rb Unlock
Meets TDMA and GSM Frequency Requirements Without an External Reference or Routine Calibration
CE Compliant
this item is in china .shipping by TNT or DHL to worldwide
shipping payment is $35
Must item arrived within 4 days by TNT
We test all the Rubidium Oscillator before delivery. The pictures
below shows one sample. What you will get is orininal sealed(already
tested and calibrated in our lab)
MY test lab
EFRATOM/DATUM LPRO-101と言うルビジウム原子発振器(Rb-OSC)
LPRO-101 to +7 dBm output level is about that, LPRO-101 and IC-7800 has been adjusted to include a level between the attenuator. IC-7800 is the largest built-in attenuator-21dB has been fixed.
--------------------------------------------------------
following spec from http://www.leapsecond.com/museum/lpro/ Thank you for tvb
Data Files
[2005-07-08 09:15:46] 1,013,412 log20696.txt 84451 seconds (= 23 hours)
Stability from Tau 0.1s to Tau 20k
Comparison
Stability of 4 rubidium frequency standards: