Matrox Electronic Systems 10760-101-0200 Section earlier in this chapter, Is specified by the DCF

Matrox Meteor-II /Camera Link grab section 33

✁On the PC/104-Plusform factor, all the signals described in this subsection are acessible using the Video input connector (Video in) on Matrox 4Sight-II. See the 4Sight-II Installation and Hardware Reference manual for pinout information.

Synchronization	The board can supply the HSYNC and VSYNC signals to the camera, in LVDS
	or TTL format, and are passed through the DB-44 expanded connector on the
	PCI form factor. Synchronization data is also received, in LVDS format, through
	the Camera Link connector, along with the video data (see the Video data input
	section earlier in this chapter).
Clock	The interface of the Matrox Meteor-II /Camera Link board can supply two clock
	signals to the camera through the DB-44 expanded connector on the PCI form
	factor. The board can also receive a clock along with the video input data, through
	each of the video input Camera Link connectors.

User input and control

Camera control

Five general purpose auxiliary signals are supported on the PCI form factor: two LVDS user input signals, and three TTL control output signals. On PC/104-Plusform factor, only two user input signals are available: one LVDS and one TTL. User input and control signals are available for controlling external devices, such as a strobe light. User signals are programmed using the MIL-Lite command MdigControl().

Four LVDS pairs are available on each Camera Link video input connector to transmit four general-purpose camera control signals from the board to the camera. With the PCI form factor, they are also provided on the auxiliary sync and control connector for optional use, two of which are in TTL format.

Trigger	Three trigger inputs are routed to the PSG; the interface supports TTL, LVDS,
	and opto-isolated trigger inputs. The latter, connected to the OPTOTRIG- and
	OPTOTRIG+ input pins, passes through an opto-coupler, a device that protects
	the board from outside surges; OPTOTRIG- is usually connected to the ground
	of the trigger source. External trigger inputs allow image acquisition to be
	synchronized with external events. The board can operate in one of two modes
	(next valid frame/field mode, or asynchronous reset mode), and the selected mode
	is specified by the DCF.
	Matrox Meteor-II /Camera Link can operate in next valid frame/field mode.
	When in this mode, the digitizer waits for the next valid frame or field (as specified
	by the DCF file) before commencing the grab. This trigger mode functions in one
	of three ways: