[time-nuts] Advice on getting a used Agilent E4432B RF-Generator

Tom Knox actast at hotmail.com
Tue Nov 19 13:55:45 EST 2013


Agilent has a mechanical attenuator option, so perhaps that is the reason. 

Thomas Knox



> Date: Tue, 19 Nov 2013 17:13:56 +0000
> From: drkirkby at gmail.com
> To: time-nuts at febo.com
> Subject: Re: [time-nuts] Advice on getting a used Agilent E4432B RF-Generator
> 
> On 19 November 2013 16:53, cfo <xnews3 at luna.dyndns.dk> wrote:
> > On Tue, 19 Nov 2013 09:35:00 -0700, Tom Knox wrote:
> >
> >> Amazing price, is there a gun involved?
> >>
> >> Thomas Knox
> >
> > No gun , but some previous buys from same seller.
> > And no options installed in the unit.
> >
> > I have just been told that the attenuator is made up of some PIN-Diodes ,
> > and is virtually immune to wear.
> >
> > So i have decided to get the unit.
> >
> > CFO
> 
> If it is made up from PIN diodes, I wonder what the logic of Agilent
> letting you read the number of times they have switched?
> 
> The sig gen I have, which I mentioned on the HP forum earlier, but was
> not sure of the number, is an HP 8665A. I paid about £700 (GBP) for
> that about a year ago, and being a late firmware version, goes to 4.5
> GHz, although its performance is only specified to 4.2 GHz. BUT I do
> have an attenuator issue on that!!! They are clearly mechanical and
> some changes of output level do not occur correctly.
> 
> 
> 
> Dave
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