Hamilton Buhl VP-25 - Manual (Page 6)

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3. INPUTS AND OUTPUTS
1. DC 12V: Power input.
2. RS 232: Serial port, to control the document camera by computer via this port.
3. AUDIO OUT: Audio output.
4. VGA OUT: VGA(RGB) signal output(15 pin D-SUB).
5. C-VIDEO: Composite video output.
6. S-VIDEO: S-Video output.
7. VGA IN: VGA(RGB) signal input(15 pin D-SUB).
8. AUDIO IN: Audio input.
9. USB: Capture image into a connected computer via provided software