I haven't found this in the documentation for use of the serial port with so I either need a pointer or it isn't documented. 1. The CAT400 must be powered up once so that you can follow the directions "power down, set switch 8, power up and upload or download, power down, reset dip switch, power up. 2. You can download or upload once and then you must go through the above procedure before you can do another upload or download. 3. The required baud rate is not documented and will be set by the program. I tried my Vista laptop with USB serial port and two XP machines with real serial ports before I figured this out. I have not gone back to the Vista machine with the USB serial port so I don't know if it will work. Has anyone else had this experience? Does the same sequence apply if you activate the serial interface with DTMF codes?
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Getting started with ED-400