Functions And Operations; Basic Functions; Dual Video Output; Burst Trigger - JAI CV-M2 Operation Manual

6. Functions and Operations

In the following the format shown in "7.5. CV-M2 command list" are used for function
commands and parameters.

6.1. Basic functions

The M2 camera is a progressive scan camera with 10 or 8 bit video output in single or dual
channel Camera Link. On a BNC connector a standard composite video output CCIR or EIA for
monitor use is found. The image covers the full format, but the resolution is much lower than
the digital video output.
An iris video signal can be used for lens iris control if the camera is in continuous mode or Reset
Continuous Trigger mode.
A knee function (and gamma for single channel) makes it possible to cover high contrast scenes.
The CV-M2 camera has 1/2, 1/4 or 1/8 partial scanning. Programmable partial scan, where the
start line and the number of lines can be selected in 1line increments is also available.
There are 5 trigger modes. Normal continuous, reset continuous trigger, edge pre-select, pulse
width control, edge pre-select burst trigger and PIV trigger. (PIV, Particle Image Velocimety).
The Sensor Gate Control can be used in normal continuous mode together with strobe flash.
The accumulation can be LVAL synchronous or LVAL a-synchronous.
In the following some of the functions are shown in details.

6.1.1. Dual video output

The video read out through Camera Link can be via a single or via double channels. (OS=0 for
single channel, OS=1 for dual channel.) If dual video outputs are used, the frame grabber PC
should reconstruct the image frame from the 2 half images.
L L

6.1.2. Burst trigger

With the burst trigger function TR=4, five previous set edge pre-selected programmable
exposures can be done with a single trigger pulse. The five shutter times can be set with BSH1
through BSH5. (1H through 1216H.)
Trigger Trigger
Burst Burst
Shutter Shutter
Exposure Exposure
Video out Video out
Frame Frame
Image Image
Camera Link Camera Link
Interface Interface
2 x 10 bit 2 x 10 bit
R R
A/D A/D
A/D A/D
CV-M2 Camera CV-M2 Camera
Fig. 8. Dual channel read out
1 1 2 2
1 1
Fig. 9. Burst trigger
CV-M2
The two half images The two half images The mirrord half The mirrord half
are stored in separate are stored in separate image R is reversed image R is reversed
. . and stiched together and stiched together
memory locations memory locations
with the half image L with the half image L
R R
L L
Frame Grabber Frame Grabber
3 3 4 4
2 2 3 3
- 7 -
Reconstructed Reconstructed
image on display image on display
Display Display
5 5
4 4 5 5