Specifications

Matrox Solios eCL/XCL acquisition section 67
The opto-isolated trigger signals pass through an opto-coupler. The voltage
difference across the positive and negative components of the signal must be
between 4.06 V and 9.165 V for logic high, and between -5.0 V and 0.8 V for
logic low.
Synchronization
For each PSG, the board can supply one horizontal (HSYNC) and one vertical
(VSYNC) synchronization signal to the video source. Through the Camera Link
connectors, the board also receives synchronization data (frame valid, line valid,
and data valid) along with the video data; refer to the Camera Link specification
for a description of the synchronization data.
Note that the Camera Link standard does not regulate how to transmit an
interlaced video signal; however, you can define an auxiliary signal as a field
polarity input signal and transmit the field polarity on this signal.
Clock
For each PSG, the board can supply a clock signal to the video sources. Through
each of the video input Camera Link connectors, the board can also receive a clock
signal.
Rotary decoder
The PSGs of all Matrox Solios eCL/XCL boards
*
feature a rotary decoder
(quadrature decoder). A rotary decoder is used to decode quadrature input
received from a rotary encoder with quadrature output. A rotary encoder is a device
that provides information about the position and direction of a rotating shaft (for
example, that of a conveyor belt). The encoder outputs a two-bit code (also known
as Gray code) on two pairs of LVDS wires for each change in position of the
rotating shaft; for a given direction of the rotating shaft, the rotary encoder outputs
the code in a precise sequence (either 00 - 01 - 11 - 10 or 00 - 10 - 11 - 01,
depending on how the rotary encoder is attached to the rotating shaft). If the
rotating shaft changes direction, the rotary encoder transmits the Gray code in the
reverse sequence (00 - 10 - 11 - 01 or 00 - 01- 11 - 10, respectively).
Upon decoding a Gray code, the rotary decoder increments or decrements its
32-bit internal counter, depending on the direction of movement. You can
configure which Gray code sequence represents forward movement and
*. For the standard Camera Link speed Matrox Solios XCL dual-Base/single-Medium
boards (66 MHz), starting from version 100.