This problem was caused by very long duration DPCs and fixed by upgrading his NIC drivers to the latest version and updating Thunderbird from v3 to the newest v5. The software was the triggering event and the NIC driver was the culprit.
John: if you are running Win7 make sure you are using the legacy 1394 Windows driver. The native Win7 1394 driver has very bad performance related issues. Also I find that setting teh FLEX Firewire driver's operation mode to Normal works better than SafeMode1 under Win7 On Wed, Jul 20, 2011 at 4:44 PM, John Swink <[email protected]> wrote: > Phil, > > I experience the same distortion problem on occasion with my > F5K+Rx2+ATU+V/U > and PSDR v2.0.22. The problem has occurred on all bands and all modes. > Clicking the start/stop button always corrects it. > > I run LatencyMon on a regular basis and it has never indicated a problem > when the distortion occurs. Highest DPC is usually between 177 and 210 us, > highest ISR is usually between 65 and 72 us. My computer is a Dell Studio > XPS 9000 with i7 CPU and 8 GB ram, running 64 bit Win7. CPU usage is > between 7% and 20% depending on what other programs are running. > > I do not recall the distortion occurring prior to PSDR v2.0. > > The distortion issue is annoying but since it is easily corrected, I have > not mentioned it previously, although it is nice to know that someone else > has experienced the same condition. > > 73, > John N8WNA > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Phil Theis > Sent: Monday, July 18, 2011 8:40 PM > To: Neal Campbell > Cc: [email protected] > Subject: Re: [FlexEdge] distortion > > Sounds like a good plan, but the program says it only works on vista > and above. I'm using XP > This machine has been working fine for over two years. > 73, > Phil K3TUF > > On 7/18/2011 8:34 PM, Neal Campbell wrote: > > Hi Phil > > > > Sounds like DPCs to me! Google for a program called latencymon and > > download it. Run it and when you hear the distortion, look at it and > > see what the offending driver/program is. > > > > One thing, if you have not disabled windows search you might be having > > those kinds of issues. > > > > 73 > > Neal > > > > On Mon, Jul 18, 2011 at 7:31 PM, Phil Theis <[email protected] > > <mailto:[email protected]>> wrote: > > > > Every now and then distortion creeps into the received audio. > > stop/start always corrects it. CPU utilization is always around > > the 10% level. > > Reboot doesn't help. > > Any ideas? > > Phil K3TUF > > > > _______________________________________________ > > Flexedge mailing list > > [email protected] <mailto:[email protected]> > > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > > This is the FlexRadio Systems e-mail Reflector called FlexEdge. > > It is used for posting topics related to SDR software development > > and experimentalist who are using beta versions of the software. > > > > > > > > > > -- > > Abroham Neal Software > > www.abrohamnealsoftware.com <http://www.abrohamnealsoftware.com> > > Work:(540) 645 5394 > > Mobile:(540) 645 8171 > > > > > > ------------------------------------------------------------------------ > > > > No virus found in this message. > > Checked by AVG - www.avg.com <http://www.avg.com> > > Version: 10.0.1390 / Virus Database: 1516/3772 - Release Date: 07/18/11 > > > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used > for posting topics related to SDR software development and experimentalist > who are using beta versions of the software. > > > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used > for posting topics related to SDR software development and experimentalist > who are using beta versions of the software. > -Tim -- Tim Ellison, W4TME Internet Systems Admin. & Customer Support Engineer FlexRadio Systems™ 4616 W Howard Ln Ste 1-150 Austin, TX 78728 Phone: 512-535-4713 Ext. 223 Email: [email protected] Web: www.flexradio.com [image: logo] *Tune In Excitement™* PowerSDR™ is a trademark of FlexRadio Systems This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
