Pulnix TM-76 Manual de instrucciones descargar pdf (Pagina 29)

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Operation

TM-1020 Series Progressive Scan Shutter Cameras

3.6.1 Internal Shutter Speed Control (TM-1020 Series)

FIGURE 9. Internal Shutter Speed Control (TM-1020 Series)

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 the dial switch from “1” to “8.” Video output timing starts right after the internal VINIT

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

3.6.2 External VINIT With Pulse Width No-Delay Shutter and ROI (Read-out

Inhibit) (TM-1020 Series)

For multiple-camera applications such as 2D or 3D measurement and multi-angle inspection,

simultaneous image capturing at an exact shutter timing for all cameras is critical requirement. The TM-

1020 series’s asynchronous pulse-width control mode provides no-delay shutter as standard. Regardless

of the internal pulse timing, the camera discharges at the VINIT leading edge and trasfers charges at the

trailing edge of the pulse. Even though each camera runs with slightly different H and data clock timing,

the image capturing is exactly simultaneous.

EXT. VINIT

INT. VINIT with shutter speed control

Discharge

Transfer Gate

FDV

Analog Video Sync

Exposure time set by shutter speed

14H

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Pulnix TM-76 Manual de instrucciones Pagina 29