Hi My guess is that your software isn't just looking for a serial port. It's also looking for specific strings back from the GPS. Depending on what you attach, it may or may not give you the strings you need. If you are doing timing, a USB interface will be a major headache.
Most sensor <=> usb issues are a result of the sensor getting a supply voltage from the serial port. The USB serial chips often don't have enough power to do the trick. There are various outfits that sell multi port USB interfaces that allow you to attach a power dongle to them. Often these are the only thing that will get a setup like yours to work. Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Joe Leikhim Sent: Wednesday, March 07, 2012 11:49 AM To: time-nuts@febo.com Subject: [time-nuts] USB Interface, legacy Software I have a software program, no longer supported, which requires two RS232 serial com port interfaces, one to communicate with a sensor (signal strength collection receiver) and the second to accept serial data from a GPS. The laptop computer I am using has only one RS232 Com port which I must use with the sensor due to incompatibility with USB to serial converters I have tried. This leaves the USB for the GPS input. I am assuming that the GPS string should be acceptable as I do nor believe the software needs to handshake with the GPS. I would like to use a "Delorme" USB type receiver on the USB port. Can anyone recommend a software add on that will make this type receiver appear as a standard RS232 Com port to my software? Thanks -- Joe Leikhim Leikhim and Associates Communications Consultants Oviedo, Florida www.Leikhim.com jleik...@leikhim.com 407-982-0446 Note to GMail Account users. Due to an abnormally high volume of spam originating from bogus GMail accounts, I have found it necessary to block certain GMail traffic. Please phone me if you believe your message was not received. _______________________________________________ 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.