[time-nuts] Newbie questions

Bruce Griffiths bruce.griffiths at xtra.co.nz
Wed Jan 6 03:51:18 UTC 2010


IE-11 is probably more current notation than using 10E-11 for 1 part in 
1 hundred thousand million.
However this is only to be expected from oder application notes and papers.

Tom Duckworth wrote:
> Warren- No, a 100% error would be 40 GHz. Where did you get 40.4 GHz? 
> That would be 101% and of course 80 GHz is 200%.
>
He's just using the same perverse logic that produced the last set of 
numbers on the application note.

Bruce
> Bruce- Of course you are right about the + symbol for 40.000 000 003 
> GHz (+7.5 parts in 1E-11) but what would you consider current standard 
> notation. We still Use this metric notation in the US. What do you use?
>
> Tom
> Tom Duckworth
> tomduck at comcast.net
> ----- Original Message ----- From: "WarrenS" <warrensjmail-one at yahoo.com>
> To: "Discussion of precise time and frequency measurement" 
> <time-nuts at febo.com>
> Sent: Tuesday, January 05, 2010 1:30 PM
> Subject: Re: [time-nuts] Newbie questions
>
>
>> Interesting
>>
>> So a 100% error (1e2) would then be 40.4GHz and not 80GHz
>> Sounds like some new  math the cost of living department came up with.
>>
>> ws
>>
>> **********
>>
>> Bruce Griffiths bruce.griffiths at xtra.co.nz
>> Tue Jan 5 20:25:05 UTC 2010
>>
>> One should of course be aware that the number notation used is no longer
>> considered correct.
>>
>> Also even after correcting for the non standard notation the last set of
>> numbers is incorrect:
>>
>> eg
>> 40.000 000 003 GHz  is equivalent to an error of  +7.5 parts in 1E11 not
>> 7.5 parts in 1E-11.
>>
>> Bruce
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