Hello Matt, It appears your Prologix GPIB-USB controller is in firmware update mode. Please follow these steps:
1. Disconnect USB cable and GPIB cable. If the controller is plugged onto an instrument, unplug it. 2. Connect USB cable. 3. Connect GPIB cable, or plug onto instrument. Let me know if you have more questions. Regards, Abdul Prologix, llc www.prologix.biz -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matt Ettus Sent: Tuesday, June 03, 2008 4:19 PM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Prologix VRBOOT error I just received a Prologix GPIB interface today. At first it was working, but it only works some times when it is connected. The others it sends the following to minicom: "?????????????????VRBOOT???????????" It seems to get commands and try to respond, but it sends weird things. If I send a "++help" it sends S and more question marks. Pressing enter causes it to send more question marks. Powering off and back on doesn't help. Anybody seen this behavior before? Matt _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.