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TM-6760 Series Progressive Scan Shutter Cameras
Operation
3.5 Integration
The CCD imager of the TM-6760 can be exposed for longer than the normal scan timing of 1/60 sec.
This integration feature provides extra sensitivity for dark-environment applications. The progressive-
scan imager permits a full frame of resolution in non-interlace format. Integration is achieved by
applying INTEG signal to pin #11 of the 12-pin connector or pin #6 of the 31-pin connector, or by
feeding VINIT pulse width control up to 1 sec at the pulse width. Please refer to Figure 2.2.2 on page 6
for pin-out information on the 12-pin connector.
The CCD imager of the TM-6760 can be exposed for longer than the normal scan timing of 1/60 sec.
This integration feature provides extra sensitivity for dark-environment applications. The progressive
scan imager permits a full frame of resolution in non-interlace format. Integration is achieved by
applying INTEG signal to pin #11 of the 12-pin connector or pin #6 of the 31-pin connector, or by
feeding VINIT pulse width control up to 1 sec at the pulse width.
3.6 Asynchronous Reset
The TM-6760's asynchronous reset is flexible and accepts external horizontal drive (HD) for phase
locking. When the VINIT pulse is applied, it resets the camera's scanning and purging of the CCD. For
asynchronous image capturing by framegrabbers, it outputs single FDV at async reset. There are two
modes to control the asynchronous reset and shutter speed:
• External VINIT with Pulse Width (no delay shutter)
• Internal Shutter Speed Mode
3.6.1 External VINIT With Pulse Width (No-Delay Shutter)
The TM-6760 can be reset with external reset pulse (VINIT). Set the dial switch to “9”. Apply a pulse-
width control VINIT signal generated from an external event trigger to the camera. The TM-6760’s
asynchronous pulse width control mode provides no-delay shutter as standard. Regardless of internal
pulse timing, it discharges at VINIT’s leading edge and transfers charges at the trailing edge of the
pulse. Even though each camera runs with slightly different H and data clock timing, image capturing is
perfectly simultaneous.
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.
VINIT
VD
VIDEO
Shutter Video
SG (TRANSFER GATE)
DISCHARGE PULSE
ASYNC RESET
Stand-by Image Stand-by Image
PROGRESSIVE OUTPUT