-boun...@flex-radio.biz] On Behalf Of Brett Gazdzinski
Sent: Thursday, October 15, 2009 10:27 PM
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] DPC latency
Can anyone explain how the buffers, sample rate interact with the filters?
I have read the stuff on the flex web page.
What is the diffe
Can anyone explain how the buffers, sample rate interact with the filters?
I have read the stuff on the flex web page.
What is the difference between the audio buffer, which does not seem to
match the firewire buffer sizes except for two, and the buffers in the dsp?
Are they the same?
If I ha
nough about device
driver architecture to make any more than an unsubstantiated guess.
-Tim
-Original Message-
From: Allen Shuff [mailto:allensh...@gmail.com]
Sent: Thursday, October 15, 2009 12:22 PM
To: Tim Ellison
Cc: flexradio@flex-radio.biz
Subject: Re: [Flexradio] DPC latency
Tim,
I
Don,
Tim describes the issues well. Let me emphasize, however, that simply not
running IE or any other app may or may not resolve any issues you may
encounter.
When I got my FLEX-5000, I had an XP machine. I was plagued by DPC's in
excess of 4000us every time the hard drive was accessed, making
process
again. Any ideas why this is the case.
Allen
- Original Message -
From: "Tim Ellison"
To: "Don" ;
Sent: Thursday, October 15, 2009 8:29 AM
Subject: Re: [Flexradio] DPC latency
OK. Here are the issues.
DPCs are a normal part of the operating conditio
: Thursday, October 15, 2009 9:02 AM
To: flexradio@flex-radio.biz
Subject: [Flexradio] DPC latency
How concerned should I be about latency in general? So if I am not running any
software just the DPC Latency Checker program running (and typing this) the
"Absolute Maximum " seems to stay aro
How concerned should I be about latency in general? So if I am not running any
software just the DPC Latency Checker program running (and typing this) the
"Absolute Maximum " seems to stay around 50 µs +/- . That is until I tell the
system to do something. Lets say I start Internet explorer,
From: Tim Ellison
Date: Thu, 15 Oct 2009 Time: 07:37:01
The answer is the laptop is probably up to the task.
Latencies greater than 1500-2000 are getting into the range where
freeze ups can occur, but I think if the FLEX Firewire driver's
Operation Mode is set for SafeMode 1, you will be O
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Ross Stenberg
Sent: Thursday, October 15, 2009 3:44 AM
To: flexradio@flex-radio.biz; Ian Wade G3NRW
Subject: Re: [Flexradio] DPC latency -- upper limit?
At first I replied privately to Ian, but what the heck...let the silent
majority speak again. My low
-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Ian Wade G3NRW
Sent: Thursday, October 15, 2009 2:19 AM
To: flexradio@flex-radio.biz
Subject: [Flexradio] DPC latency -- upper limit?
I'm configuring a laptop ready for a Flex 3000. The Thesycon DPC Latency
Chec
At first I replied privately to Ian, but what the heck...let the silent
majority speak again. My low end PC has an average latency of 1000 uS and
uses nearly 30% of its resources to run the SDR5000 with several other
programs running. Guess what, it runs fine and why is it that some don't
under
I'm configuring a laptop ready for a Flex 3000. The Thesycon DPC Latency
Checker v1.1.0 tells me that the average latency is around 500uS, with
occasional peaks (once every 2-3 minutes or so) to around 1000uS.
(By comparison, my desktop PC latency is around 20 uS, with no nasty
peaks).
As it
Behalf Of Dave Gomberg
Sent: Tuesday, May 19, 2009 9:44 PM
To: flexradio@flex-radio.biz
Subject: [Flexradio] DPC Latency
What is a suggested maximum value when using a F3K at 96KHz bandwidth???
--
Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com
All addresses, phones, etc. at http://
What is a suggested maximum value when using a F3K at 96KHz bandwidth???
--
Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com
All addresses, phones, etc. at http://www.wcf.com/ham/info.html
-
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