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| RS232 Codes |
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| Main Item | Control | CMD | Type | Value | Reply | Content | CMD | Notes | |
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| 01 | 01 | Full Screen |
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| Scaling | ASP | W/R |
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| 41 53 50 |
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| 02 | 02 | Pillar Box |
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| 04 | 04 | Auto |
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| Display |
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| BRA |
| 00 | 00 | 115200 |
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| Adjustment |
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| Baud Rate |
| W/R | 01 | 01 | 38400 | 42 52 41 |
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| WFS |
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| Adjustment |
| 02 | 02 | 19200 |
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| 03 | 03 | 9600 |
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| 0 | 0 | Set VGA_ONLY |
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| Wakeup | WFS | W/R |
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| 1 | 1 | Set |
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| from Sleep |
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| VGA_DIGITAL_RS232 |
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| 2 | 2 | Set Never_Sleep |
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| 00 | 00 | MENU Key |
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| 01 | 01 | INFO Key |
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| 02 | 02 | UP Key |
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| 03 | 03 | DOWN Key | 52 43 55 |
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| RCU | W | 04 | 04 | LEFT Key |
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| Other |
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| 05 | 05 | RIGHT Key |
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| Control |
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| 06 | 06 | ENTER Key |
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| 07 | 07 | EXIT Key |
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| Other | ALL | W | 00 | 00 | Reset all | 41 4C 4C |
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| Control |
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| 00 | 00 | 4B 4C 43 |
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| KLC | W/R |
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| 01 | 01 | Lock keys |
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| SER |
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| 13 bytes | Read Serial Number | 53 45 52 |
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| MNA | R |
| 13 bytes | Read Model Name | 4D 4E 41 |
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| GVE |
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| 6 bytes | Read Firmware Version | 47 56 45 |
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| RTV |
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| Current value | Read RS232 table | 52 54 56 |
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| Version |
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| VOL |
| 0~100 | Current value | Volume | 56 4F 4C |
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| Audio |
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| 00 | 00 | Mute Off |
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| MUT |
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| W/R | 01 | 01 | Mute On |
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PS4660T and PS5560T RS232 Codes User Manual | 3 |