[time-nuts] Thunderbolt SV and AMU Signal levels

[David Ackrill]

Ulrich Bangert wrote:

> just in order to prevent anybody into believing that
> 
>> Variation of +/- one count in the last digit is normal for 
>> any counter.  It 
>> is caused by a slight shift between the counter gate and the 
>> input signal. 
>> The longer the time between digit changes, the more stable 
>> the phase between 
>> the unknown and the counter gate.
> 
> were some kind of universal truth: This resembles the counter technology
> of some 30-40 years ago and you will not find any counter model of any
> serious manufacturer that uses "gate times" (if this term should be
> allowed at all today) which are uncorrelated to the input signal.

Remember that I am using a counter that is probably of that sort of 
vintage...

It would not have been 'cutting edge' even when I bourght it over 20 
years ago, and it does have diferent gate setting times of 0.01, 0.1 and 
1 second.

As a general purpose counter, it works OK.  At least, for the majority 
of Amateur Radio use where precision and accuracy are not necessarily 
required to really close limits anyway.

Dave (G0DJA)