Message-ID: <4EDE783B.9000800@hifidelity.com>
Date: Tue, 06 Dec 2011 20:16:59 +0000
From: Steve Dove <dsp@hifidelity.com>
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Subject: Re: LF: Sound blaster issues or maybe a Dell....
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Hi Laurence,

Just a stab: it's unlikely an oscillator is coming up on different 
frequencies but it may be that in one 'mode' it's using the USB device's 
clock and in the other cuddly Widnows is nicely using it's 
sample-rate-converter on you.  How to make it stop doing that I don't 
know - boot order or such?

         Cheers,

                 Steve


On 12/6/2011 7:51 PM, Laurence KL7UK wrote:
> Im using an external 24 bit sound blaster (USB) @ 96k on one of the dell
> pc's in Alaska and not sure if its the PC or the card but it
> occasionally and annoyingly on PC reboot "moves" 20Hz or so (dang it) -
> so here I am looking at DCF39 and in fact its off the scale somewhere
> for a couple of days - that and Stefan may have been visible but I was
> looking/cal'd in the wrong place.
>
> It apparently flips to one rate or another - checking up what it flipped
> to last time comes up with the same cal figure using Argo. Highly
> annoying but not being able to physically throttle the devices
> (electronically or physically!) Im a bit restrained. As an example in
> one state using Argo cal of 1000Hz the offset is 1003.2 and
> alternatively 1023.7 Hz - Not sure if anyone else has seen a simliar
> issue but its annoying - it appears only to "flip" when the PC is
> booted. At the moment its on spec and giving a nice daylight view of
> DCF39 or the 137.777 window - Ill move it down to 136.172 and HGA22
> windows later
>
> Laurence KL7UK Alaska remotely operated from (freezing cold) Oklahoma
>
>
>
>
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