![](/images/new-backgrounds/1269220/269220117x1.webp)
6. Serial Communications
To interface the Crystal Series LCD Display 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
Configure the
6.1
RS-232 Connection and Port Configuration
Table
When you send a valid command, the Crystal Series LCD Display executes it and acknowledges it with a
Table 6-1. Serial Commands
Command |
| Description | |||
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[ |
| S3A |
| 0### | Set audio volume to ### |
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Example: [S3A0075 sets volume to 75 | |||||
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[ |
| +3A |
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| Audio volume up |
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[ |
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| Audio volume down | |
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[ |
| S4A |
| 000# | Main input selection |
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| 0=TV |
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| 1=Input1 |
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| 2=Input2 |
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| 3=Input3 |
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| 5=DVI |
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| 6=RGB |
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Example: | [S4A0006 selects RGB | ||||
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[ |
| S4E |
| 000# | Aspect ratio selection |
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| 0=Standard (4x3) |
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| 1=VirtualWide |
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| 2=Letterbox |
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| 3=Anamorphic |
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Example: | [S4E0002 selects Letterbox | ||||
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[ |
| S4F |
| 0101 | Select Composite Video for Input1 |
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| 0102 | Select |
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| 0201 | Select Composite Video for Input2 |
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| 0202 | Select |
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6.2
Serial Command Syntax
Runco | 49 |