NXU-2A Operations Manual
6-6 Interoperability Now
I've connected the NXU-2A to my computer serial port as described in Section 3.3 of the
NXU-2A manual, but I can't put the NXU-2A into Command Mode as described in 3.3.1.
What do I do now?
First, if you're using HyperTerminal (the serial terminal program included with Windows) you
need to make sure that you have the flow control set to 'None' in the serial port configuration
menu. In addition, you may have to exit HyperTerminal and start the program again in order for
program configuration changes to take effect. Second, you must follow the instructions in
Section 3.3.1 exactly. Wait 10 seconds and then type three plus signs +++ and nothing else. If
you type more than three plus signs the procedure won't work. Wait a few seconds and try
again. In addition, the three plus signs must be typed within a one second period in order to be
recognized. You may have better results using the NXU-2A Setup Utility which is supplied
with the NXU-2A and allows convenient menu driven setup on Windows computers.
I've configured my terminal program (or the NXU-2A Setup Utility) and followed the
procedure exactly, and I still can't get the 'OK' prompt telling me that the NXU-2A is in
Command Mode. Now what?
If the NXU-2A has been configured previously and the baud rate was changed to something
other than the factory default of 115200 then you'll need to set your terminal program (or the
NXU-2A Setup Utility) to use the new baud rate in order to enter the Command Mode.
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