External Vinit With Pulse Width; Figure 9. Pulse Width Async Shutter Timing - JAI TM-1402CL User Manual

TM/TMC/RM/RMC-1402CL
3.5.1

External VINIT With Pulse Width

The TM-1402 can be reset with external reset pulse (VINIT). Set the dial switch to "9". Apply a pulsewidth
control VINIT signal generated from an external event trigger to the camera. The internal reset pulse will be
latched to HD and at the first HD timing from the external pulse leading edge (negative going edge). The CCD
discharge pulse will be generated to clear the images. The internal VD will be generated at the following edge
(positive going edge) of the external pulse, resetting the internal timing including the video sync. The shutter
speed is the same as the external pulse width, but the integration delays 1H from the leading edge. For the
immediate reset option, please contact JAI, Inc.
For the progressive format, one frame of video output will start from the rising edge of the pulse width control.
In async mode with external pulse input high, the video output will be disabled as the camera continues
discharging the CCD image, providing black video only.
Figure 9. Pulse Width Async Shutter Timing
EXT. VINIT (Pulse width control)
HD
INT. VD after trailing edge of EXT. VINIT
Discharge
Transfer Gate
FDV
Analog Video Sync
No-Delay Shutter
Exposure time set by pulse width
Operation
13H
Vsync
15