SMART Board MX Series Installation And Maintenance Manual page 107

Appendix D Managing SMART Board MX series displays using RS-232
Notes
The display won't respond to RS-232 commands when it is in a low power state (soft off). Disable
l
Power saving mode to prevent the display from entering a low power state. See Power saving
mode on page 91.
When you first turn on the display, the RS-232 connector operates in a special diagnostics mode
l
instead of control mode, and the display won't respond to control commands. In addition, the
connected control system or terminal emulation program might receive unexpected data
characters.
Program a connected control system to ignore the unexpected data characters and only send
commands after it receives the command prompt (>).
If you haven't disabled Power saving mode, you'll see the unexpected characters every time you
turn on the display.
Correct
>set input=HDMI1
Incorrect
>set HDMI1
To use the room control system to get information about the display or to adjust display settings, send
commands after receiving a command prompt (>), and then wait for the display's response before
sending another command.
Correct
>get volume
volume=55
>
If you send a command that the room control system doesn't recognize, you receive an invalid
command response.
The example contains an extra space in the volume command.
Incorrect
>set vol ume=65
invalid cmd=set vol ume=65
>
smarttech.com/kb/171555 108