I have a really nice customer who has been struggling the past month with very high, periodic DPCs that would either create harsh audio or lock up PSDR. He has put many hours into diagnosing this and finally found the culprit:
Google Cloud Print!! Google Cloud Print is a function that allows you to print standard documents (documents that are of a standard format, such that Google Documents could open it) to a printer in your house/office/etc from anywhere as long as you can get on the internet. It sounds super. There are some printers that have this capability built in and if yo are interested in this, please buy one of those printers. The problem is that Google has some software that runs through the Google Chrome browser that lets you use non-Google Cloud Print-capable printers. It has some software that periodically polls your printer and informs "the cloud" that the printer is there and ready for business. This polling happens every 7 minutes and it spikes DPCs up to 5000us when it cycles. Do not use Google Cloud Print on your SDR computer!! The only way to kill this beast is to uninstall Chrome. Just deactivating the function doesn't stop the polling. 73 -- Neal Campbell Owner Abroham Neal LLC Work: +1 540 645 5394 Mobile: +1 540 645 8171 Free Shipping on Computers! _______________________________________________ FlexRadio Systems Mailing List [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
