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Page 12

Operation

TM-4000CL Series Progressive Scan Shutter Cameras

3.5 Asynchronous Reset

The TM-4000CL camera includes two modes to control the asynchronous reset and shutter speed:

• Internal Shutter Speed Control

• External VINIT with Pulse Width

3.5.1 Internal Shutter Speed Control (TM-4000CL)

The video signal starts with internal VINIT. The camera operates the reset and shutter in the same way

as the external pulse width control mode. When the external VINIT pulse is applied, internal VINIT is

latched to HD and the internal VINIT is delayed to set up the shutter speed period. The shutter speed is

controlled by communication software from “1” to “8.” Video output timing starts right after the

internal VINIT and single shots, FDV is output at the internal VINIT timing.

VINIT

VIDEO

Shutter Video

SG (TRANSFER GATE)

DISCHARGE PULSE

ASYNC RESET

Stand-by Image Stand-by Image

PROGRESSIVE OUTPUT

FDV

EXT. VINIT

INT. VINIT with shutter speed control

Discharge

Transfer Gate

FDV

Analog Video Sync

Exposure time set by shutter speed

32H

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