Hello Roy,
Yes these fans from these old mummies are really too noisy.
I've several counters: two EIP 578, this 5370B and an ADVANTEST 5372P, the
quietest is really the ADVANTEST.
I've also a bunch of other T&M intruments and it's impossible to have all of
these up and running. Really too noisy.
I've no idea yet but I need to find a solution except having some gum into
the ears... ;-))
Best 73's
pf, F5BQP
Message: 5
Date: Wed, 20 May 2009 10:16:07 +0100
From: "Roy Phillips" <[email protected]>
Subject: Re: [time-nuts] 5070B once more....
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Message-ID: <b37f9edc6ec14abe85ef661fe2ae5...@laptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hello Pierre-Fran?ois
A point of personal interest in your email - - The noise of the fan in
the
5070B, this would appear to be a problem with a number of the older items
of
Hewlett Packard, and other manufacturers.
The items are usually fitted with a Papst fan,with a high throughput of
air
running from the power line. Has anybody tried to replace these fans with
a
more modern type (12/24 volt). I'm sure the designers were being very
proper, but I cannot believe that a counter should require such a large
volume of air moving through it ? I have an EIP 545 Counter and an HP
5335A
which both have Papst fans and are very noisy
Any ideas on this.
Roy
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
