[R-390] HP 8640B Question

[Cecil Acuff]

Nope...

The display should show the current frequency being generated.....if it's 
all zero's I would say there is a problem.  Mine comes up cold on whatever 
frequency I left it on plus or minus the warm-up drift.  If the lock button 
is depressed it will go straight to a flashing display indicating it is out 
of lock which is common while warming up.  Even then it's not all zeros.

Cecil
----- Original Message ----- 
From: "Barry" <n4buq at knology.net>
To: <r-390 at mailman.qth.net>; "2002tii" <bmw2002tii at nerdshack.com>
Sent: Saturday, February 20, 2010 10:46 AM
Subject: Re: [R-390] HP 8640B Question


> I'm curious about something.  Many of the 8640Bs I see display all zeros -
> apparently on start-up.  Some of the ads state the display simply shows 
> all
> zeros - apparently even when the frequency change knob is exercised.  Is
> this a common?  Is there something one has to do to get the frequency to
> display?
>
> Thanks!
> Barry - N4BUQ
>
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