Theres software about for the PC that can do this if you have 2 x serial = ports. Check out download.com - I'm sure I've seen it there Also, check out http://www.fte.com/default.asp Joe -----Original Message----- From: Patric Anveg=E5rd [mailto:patric.anvegard@SYS.TELECA.SE] Sent: 19 June 2002 13:36 To: PICLIST@MITVMA.MIT.EDU Subject: [EE]: RS232 sniffer Hi! I am looking for a RS232 sniffer (or protocol analyser) to be able debug = an application. I have found the dlm150 from Benedict but it is too = expensive... Has anyone seen anything else on the market? It would be = nice if it had a big display showing what is happening on the bus (like = the dlm150). Regards Patric -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body