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Runco VX-22i Installation/Operation Manual 63
PRE
L
IMINAR
Y
6.1
RS-232 Connection
and Port Configuration To interface the VX-22i with a home theater automation/control system or a PC running
terminal emulation software, connect it to your control system or PC as shown in Figure
3-15.
U s e a null-modem cable.
If you are u s ing a PC to communicate with the VX-22i:
1. Start a terminal session on your PC using a terminal-emulation program, such as
HyperTerminal.
2. Configure the PC serial port as follows: no parity, 8 data bits, 1 stop bit and no flow
control. Set the baud rate to 19200, to match that of the VX-22i RS-232 port.
3. Press
<Enter>.
You should see a command prompt (>) in the terminal window.
4. Type a command from among those listed in Table 6-1 and press
<Enter>.
6.2
Serial Command
Syntax • Commands are in ASCII format and are not case-sensitive;
on
and
ON
are equivalent.
• For a command that takes no parameters, type the command followed by a carriage
return; for example, to turn on the system, type
ON <Enter>
.
• For a command that takes a parameter, type the command, one or more spaces and
the desired value followed by a carriage return; for example, to switch to the S-Video
input, type
SSRC 1 <Enter>
.
• When you enter a valid command, the VX-22i executes it. When you send an on/off,
input selection, aspect ratio or image preset command, the VX-22i also responds with
an acknowledgment on the command line. For example, when you issue the command
SAR 2,
the VX-22i responds with
Letterbox
on the command line.
• When you enter a misspelled or otherwise invalid command, the VX-22i ignores it and
responds with
Invalid Command
on the command line.
• When you send a command followed by values outside the valid range for that
command, the VX-22i ignores it and responds with
Invalid Parameter
on the
command line.
• When the VX-22i receives an
OFF
command, it will not acknowledge or execute any
commands for approximately 90 seconds afterwards. This is to prevent hot re-strikes
of the lamp, which can damage it.
6
S erial Communication s