The link seems garbled for some reason with it inline so let me try again.

http://www.evoria.net/AE6RV/TIC/TIC2.bmp




>________________________________
> From: Bob Stewart <b...@evoria.net>
>To: Discussion of precise time and frequency measurement <time-nuts@febo.com> 
>Sent: Sunday, March 9, 2014 10:40 AM
>Subject: Re: [time-nuts] New TIC test run
> 
>
>Hi Anders,
>
>I just put the schematic up at http://www.evoria.net/AE6RV/TIC/TIC2.bmp  
>However, there are some caveats: I did not have to use the level shifter 
>Q1/Q2.  I am not yet using VR1.  (Actually the one I bought failed for some 
>reason.)  R4 is actually 2.4K, and C1 is not being used.  The capacitors in 
>the 18F2220 PIC are sufficient without C1.
>
>I'm not sure what you mean by "what is the range".  The ADC is 10 bits wide.  
>The output varies from about 150 to about 500 units over 360 degrees of phase 
>error without the Voltage Ref.  It should be twice that when I get that in and 
>working; though I am worried that it might clip on the high side so...
>
>The red data, as it says on the plot, is the 53345B.  The blue data is from 
>the TIC.  The transfer function is nonlinear, and I have made no effort to 
>correct for this.  
>
>I've had a day to play with it, and I'm amazed at the precision of this thing. 
> It's like taking the 5334B and adjusting the focus knob.  Of course it's not 
>as accurate, due to the way it works, but it will fit my needs well in my 
>GPSDO.
>
>Bob - AE6RV
>
>
>
>>________________________________
>> From: Anders Wallin <anders.e.e.wal...@gmail.com>
>>To: Bob Stewart <b...@evoria.net>; Discussion of precise time and frequency 
>>measurement <time-nuts@febo.com> 
>>Sent: Sunday, March 9, 2014 3:19 AM
>>Subject: Re: [time-nuts] New TIC test run
>> 
>>
>>
>>
>>Do you have the schematic for this online somewhere?
>>what is the range of the interpolator?
>>which TIC is the red/blue points? the blue data looks like it is aliased 
>>somehow, perhaps a number that is truncated/rounded badly?
>>
>>
>>
>>
>>On Sat, Mar 8, 2014 at 9:46 PM, Bob Stewart <b...@evoria.net> wrote:
>>
>>I put my TIC to hardware, and have started testing it.  Here is a sample run 
>>comparing it against the 5334B with an off frequency OCXO.  I've scaled and 
>>rotated to tried to cancel out the length of the cables to the 5334B.  Still 
>>early days with it, yet.
>>>
>>>
>>>http://www.evoria.net/AE6RV/TIC/TICvs5334B.png
>>>
>>>Bob - AE6RV
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>>
>>
>>
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>
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