Serial Communications

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.Use a null-modem cable.

If you are using 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 6-1and press <Enter>.

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.

6.1

RS-232 Connection and Port Configuration

6.2

Serial Command Syntax

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Runco VX-22I operation manual Serial Communications, If you are using a PC to communicate with