Uart And Rs-232 Serial Port; Trigger - Matrox Meteor-II /Standard Installation And Hardware Reference

36 Chapter 4: Hardware reference
The video decoder on all form factors also features automatic gain control (AGC).
However, you can disable this feature (MIL-Lite MdigControl() with
M_GRAB_AUTOMATIC_INPUT_GAIN
manually (MdigControl() with

UART and RS-232 serial port

Matrox Meteor-II /Standard for PCI and CompactPCI feature a Universal
Asynchronous Receiver/Transmitter (UART) that provides an RS-232 serial
interface. For example, this allows you to remotely control a camera or a motion
control unit, or communicate with a program logic controller (PLC). The UART
is programmed using the MIL-Lite command MdigControl() with the
control types.

Trigger

Matrox Meteor-II /Standard accepts an external trigger input which allows image
acquisition to be synchronized to external events. The trigger is synchronous to
the incoming video stream and it is received through an opto-coupler that isolates
the rest of the circuitry from electrical surges. Matrox Meteor-II /Standard operates
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:
• Edge-triggered monoshot acquisition. The VIA (Video Interface Asic) waits for
the rising/falling edge to capture a single frame.
• Edge-triggered continuous acquisition. The VIA waits for the rising/falling edge
to start a continous grab.
• Level-sensitive "continuous" acquisition. The VIA grabs continuously while the
level of the trigger is high/low.
❖ The polarity of the active and inactive levels of the trigger signal is software
programmable.
Trigger signals connected to the OPTOTRIG- and OPTOTRIG+ input pins pass
through an opto-coupler, a device that protects the board from electrical surges;
OPTOTRIG- is usually connected to the ground of the trigger source.
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set to ) and adjust the gain
M_DISABLE
).
M_GRAB_INPUT_GAIN
M_UART...