[time-nuts] 10811A versus 10811-60111

[corby d dawson]

Hi,

I have had the occasion recently to measure the aging and short term
stability of a bunch of oscillators.

Measurements were against an EFOS-2 Hydrogen Maser.

I thought that the results between 10811A (-60109 variant) and the
10811-60111 might be of interest to some.

All oscillators had aging below 5X10-10/day.

As you can see the short term stability of the -60111 compares favorably
with the 10811A.

I'll be making some measurements on the -60158 variants and some motorola
units soon.

Cheers!
Corby Dawson


QUARTZ         1 SEC. 10 SEC. 100 SEC. 1K SEC. (ALL HAD AGING BELOW
5X10-5/DAY)
------------------------------------------------
10811-60109    6.11-12 2.52-12 8.78-12
10811-60109    1.65-12 1.91-12 9.79-12
10811-60109    1.65-12 1.99-12 1.11-12
10811-60109    5.47-12 1.16-12 2.38-12
105 STYLE #T 7.60-13 2.01-12 3.94-12
10811-60111    1.27-12 2.65-12 1.93-12
105 STYLE #2  1.14-12 1.57-12 2.26-12 
105 STYLE #3  1.31-12 1.58-12 2.68-12
10811-60111    3.04-12 5.54-12 1.47-12
105 STYLE #4  1.38-12 3.49-12 4.84-12
10811-60109    2.05-12 2.89-12 3.24-12
10811-60111    1.36-12 1.17-12 1.75-12
105 STYLE #5  1.14-12 2.09-12 2.51-12 
FTS 1200 #1     7.14-13 1.48-12 1.92-12
10543A             2.86-11 1.05-11 1.63-11
FTS 1200 #2     2.99-13 4.30-13 7.69-13 8.65-13
10544A             4.08-12 2.95-12 7.79-12
10811-60111    1.24-12 2.10-12 2.09-12
10811-60111    1.48-12 1.59-12 1.54-12
10544A             1.89-12 2.99-12 5.01-12
105 style #6       2.88-12 2.88-12 7.37-12
105 style #7       9.69-13 2.30-12 3.49-12
10544-60511    8.20-13 2.11-12 2.51-12
Piezo clone        2.57-12 2.23-12 2.17-12
5060A osconly  4.04-12 5.94-12 8.42-12 1.30-11
10811-60111    2.59-12 3.87-12 5.77-12

-60109spec       2.50-12 5.00-12 1.00-11
-60111spec     <1.00-12    *       *
10811Aspec     5.00-12 5.00-12 1.00-11 
*not specified
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