Pulnix TM-1300 Manual de Instruções descarregar pdf (Página 19)

Page 11

Operation

TM-4000CL Series Progressive Scan Shutter Cameras

The TM-4000CL outputs the progressive-scanned image with an electronic shutter in two different

formats:

1. Progressive-scanning digital and analog output

The CCD signal goes through A/D and D/A converters and through 10-bit in, 10-bit or 8-

bit out look-up table (LUT).

The analog output is the same as 75 ohms, 714mVp-p format available from BNC and

12-pin connector. The digital output is available via the Camera Link connector.

2. Partial Scan Mode

By selection, the camera has centered 1000 lines, 500 lines, and 250 lines. Partial scan

mode, 1000 lines, partial scan’s frame rate is 28fps. 500 lines is 50 fps, 250 lines is 80

fps.

3.3 Electronic Shutter

The TM-4000CL has a substrate drain-type shutter mechanism which provides a superb picture at

various speeds without smearing. A built-in manual shutter speed control selects the electronic shutter

rate of 1/60 (non-async mode only), 1/125, 1/250, 1/500, 1/1,000, 1/2,000, 1/4,000, 1/8,000, or 1/16,000

second.

With VINIT high (5V), the CCD keeps discharging. With a negative pulse to VINIT, the camera resets

and purges the charge momentarily. Then it starts integrating for the period of shutter control set by

either an external pulse width or internal shutter control. Progressive scanning permits a full 1000 lines

of vertical resolution, as compared to a conventional CCD camera which captures only half the vertical

lines per shutter.

3.4 Integration

The CCD imager of the TM-4000CL can be exposed for longer than the normal scan timing of 1/15 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

controlling CC2 Camera Control line through the Camera Link cable to low (GND) or providing pulse-

width control up to 1/15 frames. Please refer to Figure 2.2.2 on page 5 for pin-out information on the

12-pin connector.

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Pulnix TM-1300 Manual de Instruções Página 19