[time-nuts] Power level reference

[Dick Moore]

My boss at Tektronix, Bob Ragsdale, quoted the "Pulse Amplifier Designer's Law," which he said he learned at the Rad Lab in Livermore:

"If it's big enough, it's too slow.
If it's fast enough, it's too small.
If it's big enough and fast enough, its got rumdiddlies on the top."

Best,
Dick Moore

> ------------------------------
> 
> Message: 9
> Date: Tue, 01 Dec 2009 20:00:58 -0500
> From: mikes at flatsurface.com (Mike S)
> Subject: Re: [time-nuts] OT: Power level reference
> To: jfor at quik.com, Discussion of precise time and frequency
> 	measurement	<time-nuts at febo.com>
> Message-ID: <20091202010202.185C41165C1 at hamburg.alientech.net>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
> 
> At 07:00 PM 12/1/2009, J. Forster wrote...
>> Scopes tend to have non-flat frequency response. I'd consider a 
>> precision
>> load and something like an HP 3400A True RMS meter for up to a hunderd 
>> MHz
>> or so.
> 
> You have to know your equipment. I have a Tek 485 350 MHz analog scope, 
> so I'm confident it's flat into VHF (at least beyond 100 MHz). I've 
> verified it exceeds the 350 MHz spec (i.e. < 3 db down @ 350 MHz) with 
> a tunnel diode pulser.
> 
> 
> 
> 
> 
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> End of time-nuts Digest, Vol 65, Issue 4
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