[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

_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.






More information about the time-nuts mailing list