[time-nuts] 5370A vs 5370B
Bob Camp
lists at rtty.us
Wed Mar 10 17:42:34 UTC 2010
Hi
Fanless Atom motherboard / solid state disk / wall wart power supply ... DVD
is still the main source of noise.
Of course the bean grinder in the single cup Cappuccino machine drowns out
the DVD pretty effectively.
--------------------
Looks like a 5370B with an intact front panel and some sort of internal
issue(s) just showed up at auction. Hmmm.....
Bob
-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Magnus Danielson
Sent: Wednesday, March 10, 2010 12:31 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] 5370A vs 5370B
Ed Palmer wrote:
> One trick I always use to quiet down a rowdy fan is to replace the
> mounting screws with rubber mounts. This isolates the fan's mechanical
> vibrations from the chassis. The difference is audible - even with a
> good fan. I salvaged some mounts from IBM machines that work great.
> Most of the big online computer retailers have something along these
lines.
The same trick works very well for hard-disks.
Modern quiet computer chassis is very very quiet while using a multitude
of very simple and straightforward tricks like this. Recently built a
server with 8 hard-disks this way. The DVD-player is the noisiest
part... by far. However, we will never really use it after initial
booting, so it is OK.
* rubber suspension of fans
* rubber suspension of hard-disks
* damping on flat surfaces
We got a pair of extra large (and quiet) fans to ensure air-flow.
Slightly more expensive than the standard chassis. Quieter when in the
terminal room than the computer-hall with closed door.
Cheers,
Magnus
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