I'm hoping that someone else with a Fluke 9100 system can answer some questions: Even though the option sticker on the back of my case lists the -004 (programming) option and 4mB of RAM, it looks like someone has pulled them both out. When I hit the EDIT key, I get a "EDIT OPTION NOT INSTALLED" error. Even though I don't have the programmer's keyboard or monitor, I would think it would still enter the EDIT mode without them if the -004 software was really installed. Can anyone that *does* have this option check to see what happens when you try to enter the EDIT mode without the keyboard and monitor attached? It looks like without EDIT mode this thing might be no more powerful than a 9010A. Apparently, you can't even use the RS-232 ports to transfer data unless you get into EDIT mode. Best case, I can save key sequences on floppies and not much more. Or am I (hopefully) missing something? Alex http://www.elektronforge.com ayeckley@elektronforge.com To UNSUBSCRIBE from techtoolslist, send a message with "UNSUBSCRIBE" in the message body to: techtoolslist-request@flippers.com. Please direct other questions, comments, or problems to jrr@flippers.com.