[time-nuts] ADEV values of Thunderbolt PPS and OSC error estimates

Mark Sims holrum at hotmail.com
Sat Jan 10 18:29:30 EST 2009



Another try to see if I can get some stinkin' CR/LF spacing out of hotmail this week.....


>
> Here is two sets of ADEV/OADEV data generated from the PPS and OSC error estimates produced by the Thunderbolt. There is a set from a run where the oscillator was disciplined by GPS and a set where the oscillator was undisciplined. The PPS numbers are probably the best ones to use. Trimble's documentation on exactly what the OSC error values are is rather poor and I am just guessing what they mean and how to convert them into something that can be fed into the ADEV code.
>
>
> #
> # PPS OADEV over 22000 points - sample period=1 secs - disciplined
> # 1 tau 1.4140e-006 (n=21998)
> # 2 tau 1.2248e-006 (n=21996)
> # 5 tau 4.8993e-007 (n=21990)
> # 10 tau 2.4503e-007 (n=21980)
> # 20 tau 1.2258e-007 (n=21960)
> # 50 tau 4.9104e-008 (n=21900)
> # 100 tau 2.4600e-008 (n=21800)
> # 200 tau 1.2359e-008 (n=21600)
> # 500 tau 5.0137e-009 (n=21000)
> # 1000 tau 2.5688e-009 (n=20000)
> # 2000 tau 1.2359e-009 (n=18000)
> # 5000 tau 2.7077e-010 (n=12000)
> # 10000 tau 5.4669e-013 (n=2000)
> #
> # PPS ADEV over 22000 points - sample period=1 secs - disciplined
> # 1 tau 1.4140e-006 (n=21998)
> # 2 tau 1.2235e-006 (n=10998)
> # 5 tau 7.7367e-007 (n=4398)
> # 10 tau 5.4722e-007 (n=2198)
> # 20 tau 2.6497e-010 (n=1098)
> # 50 tau 9.8233e-011 (n=438)
> # 100 tau 5.6151e-011 (n=218)
> # 200 tau 3.9024e-011 (n=108)
> # 500 tau 1.4521e-011 (n=42)
> # 1000 tau 6.3933e-012 (n=20)
> # 2000 tau 4.1976e-012 (n=9)
> #
>
>
>
> #
> # OSC OADEV over 22000 points - sample period=1 secs - disciplined
> # 1 tau 2.2969e-007 (n=21998)
> # 2 tau 1.6255e-007 (n=21996)
> # 5 tau 1.0351e-007 (n=21990)
> # 10 tau 7.4928e-008 (n=21980)
> # 20 tau 5.7408e-008 (n=21960)
> # 50 tau 4.6799e-008 (n=21900)
> # 100 tau 3.4445e-008 (n=21800)
> # 200 tau 1.7323e-008 (n=21600)
> # 500 tau 7.0268e-009 (n=21000)
> # 1000 tau 3.6004e-009 (n=20000)
> # 2000 tau 1.7322e-009 (n=18000)
> # 5000 tau 3.7961e-010 (n=12000)
> # 10000 tau 4.1514e-013 (n=2000)
> #
> # OSC ADEV over 22000 points - sample period=1 secs - disciplined
> # 1 tau 2.2969e-007 (n=21998)
> # 2 tau 1.6263e-007 (n=10998)
> # 5 tau 1.0336e-007 (n=4398)
> # 10 tau 7.4706e-008 (n=2198)
> # 20 tau 5.7006e-008 (n=1098)
> # 50 tau 4.5848e-008 (n=438)
> # 100 tau 3.9821e-008 (n=218)
> # 200 tau 2.8396e-008 (n=108)
> # 500 tau 1.0394e-010 (n=42)
> # 1000 tau 5.2360e-012 (n=20)
> # 2000 tau 2.4501e-012 (n=9)
>
>
> #
> # PPS OADEV over 22000 points - sample period=1 secs - undisciplined
> # 1 tau 7.5658e-010 (n=21998)
> # 2 tau 5.0045e-010 (n=21996)
> # 5 tau 2.8665e-010 (n=21990)
> # 10 tau 1.8127e-010 (n=21980)
> # 20 tau 1.1774e-010 (n=21960)
> # 50 tau 6.8339e-011 (n=21900)
> # 100 tau 4.6184e-011 (n=21800)
> # 200 tau 4.1377e-011 (n=21600)
> # 500 tau 7.4192e-011 (n=21000)
> # 1000 tau 1.0220e-010 (n=20000)
> # 2000 tau 1.1842e-010 (n=18000)
> # 5000 tau 1.2073e-010 (n=12000)
> # 10000 tau 3.7124e-011 (n=2000)
> #
> # PPS ADEV over 22000 points - sample period=1 secs - undisciplined
> # 1 tau 7.5658e-010 (n=21998)
> # 2 tau 5.1193e-010 (n=10998)
> # 5 tau 2.9314e-010 (n=4398)
> # 10 tau 1.8065e-010 (n=2198)
> # 20 tau 1.1872e-010 (n=1098)
> # 50 tau 7.2017e-011 (n=438)
> # 100 tau 4.6293e-011 (n=218)
> # 200 tau 3.9846e-011 (n=108)
> # 500 tau 7.2822e-011 (n=42)
> # 1000 tau 1.0120e-010 (n=20)
> # 2000 tau 1.1514e-010 (n=9)
> #
>
>
>
> # OSC OADEV over 22000 points - sample period=1 secs - undisciplined
> # 1 tau 3.9644e-009 (n=21998)
> # 2 tau 1.9671e-009 (n=21996)
> # 5 tau 7.8264e-010 (n=21990)
> # 10 tau 3.9313e-010 (n=21980)
> # 20 tau 1.9801e-010 (n=21960)
> # 50 tau 7.9931e-011 (n=21900)
> # 100 tau 4.1369e-011 (n=21800)
> # 200 tau 2.5506e-011 (n=21600)
> # 500 tau 2.2498e-011 (n=21000)
> # 1000 tau 2.0910e-011 (n=20000)
> # 2000 tau 1.2765e-011 (n=18000)
> # 5000 tau 7.0420e-012 (n=12000)
> # 10000 tau 1.5081e-012 (n=2000)
> #
> # OSC ADEV over 22000 points - sample period=1 secs - undisciplined
> # 1 tau 3.9644e-009 (n=21998)
> # 2 tau 1.9375e-009 (n=10998)
> # 5 tau 7.9203e-010 (n=4398)
> # 10 tau 3.8195e-010 (n=2198)
> # 20 tau 1.8606e-010 (n=1098)
> # 50 tau 7.7008e-011 (n=438)
> # 100 tau 3.5703e-011 (n=218)
> # 200 tau 2.0731e-011 (n=108)
> # 500 tau 2.1042e-011 (n=42)
> # 1000 tau 1.9238e-011 (n=20)
> # 2000 tau 1.4089e-011 (n=9)
>
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