Rockwell Automation 5370-CVIM2 Module - Manual (Page 82)

5 Chapter Chapter 3
Image Acquisition Parameters
3–43
NOTE: For MOS–type cameras, which do not use shift registers, the
Transfer value can be set to –1 to disable the strobe–inhibiting period.
These cameras have no restrictions as to when the strobe can be fired.
•
Int. Start (1/2 Lines) –– This value applies only to frame reset cameras.
Int. Start is the time, stated in 1/2 lines, after the assertion of the first
vertical drive (VD) pulse. This is the point at which the camera starts
image integration.
•
Int. End (1/2 Lines) –– This value applies only to frame reset cameras.
Int. End , stated in 1/2 lines, indicates the point at which a frame reset
camera stops image integration.
For cameras using the Reset, Delay on VD
↓ selection, it is the time
after the active–low vertical drive (VD) pulse goes “up” (high) that the
camera stops image integration. For cameras using the
Reset Double
Pulse VD selection, it is the time after the assertion of the second VD
pulse. This is the point at which the camera stops image integration.
For cameras using the Reset, Delay on VD
↑ and
Reset, No Delay
selections, Int. End has no meaning.
•
VD Length (1/2 Lines) –– This value is the duration, stated in 1/2 lines,
of the “active low” VD (vertical drive) pulse from the CVIM2 system.
(For frame reset cameras using the
Reset, Delay on VD
↓ selection, the
length increase by the amount of the selected shutter speed.)
•
Acq. Start (1/2 Lines) –– Refer to the Editing Standard Allen–Bradley
Cameras section for details.
•
Acq. Lines (1/2 Lines) –– Refer to the Editing Standard Allen–Bradley
Cameras section for details.
•
Total (1/2 Lines) –– This value is the total number of half lines that the
camera system uses in one cycle. For the Allen–Bradley standard
cameras,
Total is always 525.