CHAPTER 15
Live Video Input and Control
DL.3 Digital Light User Manual 185

Serial Device Interface (SDI)

The SDI capture is another option for input and output to the graphics engine. Media Folder 255
Media file 1 will display the S-video capture. Media folder 255 media file 2 will display the SDI
capture. A DL.3 fixture can both capture SDI (accept external SDI feeds) and also output its
camera through SDI. There are two separate ports on the DL.3 back panel.
NOTE: A DL.3 fixture cannot capture SDI and output its own camera feed
through SDI simultaneously. So, unlike the S-video capture, it cannot
be displaying the SDI feed of another fixture while outputting its own
camera through SDI.
To switch between SDI in and SDI out, access the Motion Control parameters through your DMX
console. The iris does not have to be closed for the switch to happen. See Chapter 14: Fixture
Motion Functions and Appendix A: DMX Protocol for more detailed information.
Note the following when using the SDI video input and output option:
• While capturing SDI, anything that is being fed to the “In” SDI port will be mirrored on the
“Out” port. Therefore, it is possible to daisy chain fixtures together via SDI, allowing
multiple DL.3s to have the same SDI feed without a switcher/splitter device.
• In order for the DL.3 to output its camera through SDI, the S-video relays must be set to
internal camera capture (otherwise known as camera feedback). This is necessary because
the S-video signal must be routed to the computer.
• The “frame delay” on the SDI capture is nearly identic al to that of the S-video captu re. The
difference cannot be seen with the naked eye.
• It is possible for a unit to have both SDI and S-video inputs coming in at the same time.
Sending the Camera Feed to S-Video Camera Out
The factory default assigns the video feed from the internal camera to the graphics engine.
However, a DL.3 fixture can be configured to route the camera video feed to the Camera Out
connector by setting the Control Parameter to a DMX value between 229-232.
NOTE: You can route the internal camera video feed to either the graphic engine or
the camera out connector, but not to both at the same time.
This setting will be retained until you change it or restore the factory defaults.
Controlling the Internal Camera Input
Several parameters allow you to control and apply effects to the Internal camera input.

Camera Zoom

The Camera Zoom parameter uses two DMX channels to provide 16-bit control of the camera’s
zoom function. This includes an 18× optical and 12× digital zoom for a total of 216× combined
zoom range. You can adj ust the Camera Zoom pa rameter from In (DM X value = 0) to Out (DM X
value = 65535)