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#107188 - 24/07/2002 16:39 What's that noise while flashing?
matthew_k
pooh-bah

Registered: 12/02/2002
Posts: 2298
Loc: Berkeley, California
Another upgrade, and I'm once again wondering why doing a kernel upgrade through serial makes my empeg emit a high pitched whine? Both my players do it, but I just can't think of an explanation for it, especially because I never hear it when I upgrade hijack through ethernet.

Anyone know?

Matthew

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#107189 - 24/07/2002 17:13 Re: What's that noise while flashing? [Re: matthew_k]
Daria
carpal tunnel

Registered: 24/01/2002
Posts: 3937
Loc: Providence, RI
Maybe it's the UART? I don't know the noise you mean, but then, there are always enough noisier devices around...

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#107190 - 24/07/2002 23:07 Re: What's that noise while flashing? [Re: matthew_k]
Shonky
pooh-bah

Registered: 12/01/2002
Posts: 2009
Loc: Brisbane, Australia
I don't remember seeing them but I am fairly certain they are there. If so, it's probably the windings on a transformer or a choke. Probably when upgrading the kernel, the empeg chews a little more power than normal.

I wouldn't have thought that programming the flash would increase the current consumption that much though. Re-reading you say it's a UART based thing. In that case it's possibly the UART level converters drawing a little more power.
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Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)

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#107191 - 25/07/2002 00:57 Re: What's that noise while flashing? [Re: matthew_k]
andym
carpal tunnel

Registered: 17/01/2002
Posts: 3996
Loc: Manchester UK
I noticed that too, the noise seems to appear in time with the moving progress bar on the screen whilst programming. The noise has a very short duration, and it seems to do it about once a second during the programming process.
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Cheers,

Andy M

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