[time-nuts] DDS, OCXO and ADEV

[d0ct0r]

Hello,


I would like to create some charts for ADEV for following setup:

HP5386A counter connected to External REF. (OCXO). The input of counter 
connected to my DDS VFO. The frequency on VFO is 2853000 Hz.

Here is what I got from counter via GPIB:

S +3.505082408E-7
S +3.505082408E-7
S +3.505082408E-7
S +3.505082408E-7
S +3.505082408E-7
S +3.505082408E-7
S +3.505082408E-7
S +3.505082409E-7
S +3.505082408E-7
S +3.505082409E-7
S +3.505082408E-7
S +3.505082408E-7
S +3.505082408E-7

I converted it to following form:

0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082408000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000
0.0000003505082409000000

Then I tried to use ADEV by tvb (long life to Tom!). See attached file 
1b.bmp

And I tried to create the charts for the collected data. See attached 
file 1a.bmp.

But it seems I am doing something wrong. Any advises will be greatly 
appreciated. Thanks !


-- 
WBW,

V.P.
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