I am trying to communicate with an instrument (IL1700 radiometer) connected via RS 232 to a PC running windows 2000 pro and Labview7 Express. In a VISA session, I tried a basic *IDN? query and I got an error BFFF003E. If I try to read from the device, I get some non sense answer (see screenshots attached). Is it a software or hardware problem? does someone know exactly what error BFFF003e means? I also encountered error BFFF0015, where can I find a description of all the visa error using this nomenclature ?