[Amps] RE: 4CX250B Screen Supplies

[R.Measures]

On Jul 29, 2004, at 1:40 AM, peter.chadwick at Zarlink.Com wrote:

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> Rich said:
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>> With 30Hz or so tone spacing, it's going to
>> take an incredibly capable spectrum analyzer to separate and measure
>> the 3rd and 5th order products.
>
> The HP141T will just about do it to 30dB down or so on the 10Hz RBW
> position. Of course, it needs to be well warmed up, and takes a long 
> time
> on narrow sweep with the persistence up. No good for a sweep tube amp!
>
> The newer HP ones are good, if you can afford them..........we have one
> which turned in with all the bits and pieces at asound $70k.

But that's a reasonable price for an incredibly capable machine.

> Because it's
> menu driven, personally, I find it a horror to drive, preferring the 
> older
> 8566/68 series with lots of dedicated buttons - once you got to know 
> where
> they were, that was very quick.
>
> 'the trouble with spectrum analysers is that they tell you so many 
> things
> that you'd rather not know'
>
Chortle.
  Cheers, Peter.
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Richard L. Measures, AG6K, 805.386.3734.  www.somis.org