It is pretty straightforward to add a new command to turn on/off automatic saving of configuration parameters in the next firmware update. ETA is a week or two. Please email [email protected] if you like to be notified when the update is available.
Firmware updates may be downloaded from http://prologix.biz Thanks for all the feedback! Regards, Abdul Prologix -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Samuel D. [x86/CPC] Sent: Monday, July 06, 2009 10:08 AM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] Prologix GPIB-USB vs. GPIB-LAN vs. NI was: AW:Prologix GPIB-USB vs. GPIB-LAN Damn, that's a big flaw. The software I'm working on send three "++addr" commands per second. Only 4 days @24h/day to reach the limit :-/ -----Message d'origine----- De : [email protected] [mailto:[email protected]] De la part de Mark Sims Envoyé : lundi 6 juillet 2009 18:54 À : [email protected] Objet : [time-nuts] Prologix GPIB-USB vs. GPIB-LAN vs. NI was: AW: Prologix GPIB-USB vs. GPIB-LAN The Prologix adapter has a ++addr command for changing the GPIB address. You can select different instruments that way. Unfortunately, the version I looked seems to have a potentially fatal flaw. When you change the ++addr, the device writes the internal microprocessor EEPROM. The EEPROM is speced a 1 million write cycles. If you changed instruments at once a second, in under two weeks the chip could be toast. My app could have worn out the chip in under a day... All this assumes that Prologix did not implement some sort of elaborate wear leveling scheme in their software, but I suspect not. They seem to have intended one to set up the device to talk to one instrument then save that configuration in the chip. Dynamically hammering the thing to death with address changes was not the intention of the ++addr command. I wound up implementing a GPIB controller (with Prologix emulator) with my MegaDonkey touch screen LCD controller. It even included a HPGL/PCL plotter routine to draw instrument plots on the 160x80 LCD. ---------------------------------------- _________________________________________________________________ Windows Live SkyDrive: Get 25 GB of free online storage. http://windowslive.com/online/skydrive?ocid=TXT_TAGLM_WL_SD_25GB_062009 _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
