Pulnix TM-6703 Manual de Instruções descarregar pdf (Página 14)

OPERATION

TM-6703 Progressive Scan Double Speed Shutter Camera Page 9

3 OPERATION

3.1 Modes of Operation

The TM-6703 is designed to accommodate a high resolution, on-line inspection reset mechanism with

full frame shutter. It accepts external horizontal sync (HD, TTL Levels) to lock the camera and VINIT

pulse for resetting the camera asynchronously. The shutter speed can be controlled by either an external

double pulse, or by internal speed control by setting the 10-position shutter speed dial switch on the

back panel.

3.1.1 Asynchronous Reset Mode

For the asynchronous reset mode, select ASY on the back panel of the camera.

The TM-6703's asynchronous reset is ﬂexible. External HD can be applied for phase locking if required.

Applying a VINIT pulse resets the camera's scanning and purging of the CCD. Do not supply VD if the

asynchronous reset is used. Instead, use HD to synchronize the camera to the external device.

When external VINIT is high (5V), the TM-6703 expects the async pulse input and the video output will

be black video. It resets at the negative going pulse edge and captures the frame regardless of the shutter

speed (fast or slow mode). The video output is kept disabled as the CCD is discharged continuously

during VINIT high. When the ﬁrst VINIT pulse comes in, it resets the timing and outputs the image. If

the switch is set to NRM (normal mode), the video output will be real time with manual shutter.

FIGURE 3. Asynchronous Reset

EXTERNAL VINIT

INTERNAL VD

SG (TRANSFER GATE)

DISCHARGE PULSES

VIDEO

SHUTTER

VIDEO

NON-INTERLACE OUTPUT

ASYNC RESET

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Pulnix TM-6703 Manual de Instruções Página 14