[time-nuts] Symmetricom 5115A Phase Noise Allen Deviation TestSet on ePay

Tom Holmes, N8ZM tholmes at woh.rr.com
Wed Apr 7 11:16:59 EDT 2010


Luis...

My wife is a great bargain hunter, and loves to come home and tell me how
much money she has saved on something she just bought. I've been trying to
get her to express the savings in dB$, but she just isn't going for it. Any
mention of the word logarithm sends her into serious inattention to anything
else I say.

I need help! I can't deal with these quantities in non-dB terms!

:-).

Regards,

Tom Holmes, N8ZM
Tipp City, OH
EM79xx

-----Original Message-----
From: Luis Cupido [mailto:cupido at mail.ua.pt] 
Sent: Wednesday, April 07, 2010 10:32 AM
To: tholmes at woh.rr.com; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Symmetricom 5115A Phase Noise Allen Deviation
TestSet on ePay

Hi Tom,

10log

I have no doubts that money=power...
from years of personal experience of little power ;-)

;-).

Luis Cupido.
ct1dmk.


Tom Holmes, N8ZM wrote:
> Hi Luis...
> 
> Is that based on 10Log, or 20Log?
> 
> I'm thinking Money = Power ;-).
> 
> Regards,
> 
> Tom Holmes, N8ZM
> Tipp City, OH
> EM79xx
> 
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Luis Cupido
> Sent: Wednesday, April 07, 2010 9:36 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Symmetricom 5115A Phase Noise Allen Deviation
> TestSet on ePay
> 
> about 16dB down (I think).
> 
> :-)
> 
> lc
> ct1dmk.
> 
> 
> Steve Rooke wrote:
>> Ah! but is it cheaper than US $15,865.00?
>>
>> On 8 April 2010 01:05, Luis Cupido <cupido at mail.ua.pt> wrote:
>>> BTW,
>>>
>>> I have this recently developed for another application
>>>
>>> http://w3ref.cfn.ist.utl.pt/cupido/dl/050.jpg
>>>
>>> it has all it takes to make that type of instrument
>>> with all that performance or better.
>>> (2x100ms/s 16bit ADC, 40k FPGA and USB2 interface).
>>> (both clock and triggers can come externally from low PN
>>> sources)...
>>>
>>> 40ke Cyc III fpga has more than enough multipliers and etc
>>> for the sort of conversions and correlations needed...
>>> and the display and fancy interface would happen in the PC.
>>>
>>> Anyone feels attracted to do some coding ???
>>>
>>> Luis Cupido
>>> ct1dmk.
>>>
>>>
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>>>
>>
>>
> 
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