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Introduction

TM-4000CL Series Progressive Scan Shutter Cameras

Applications for the TM-4000CL include machine vision, medical imaging, intelligent transportation

systems, high-definition graphics, on-line inspection, gauging, character reading, archiving, and high-

security surveillance.

1.2 Features

• Miniaturized and lightweight

The printed circuit boards in the TM-4000CL have been arranged based on a new design

philosophy. This creates modular electronics for the camera, giving it flexibility. In addition, the

use of miniature solid-state components results in a compact, lightweight camera that is 50.8mm x

50.8mm x 81.5mm in dimensions, and weighs only 155 grams.

• Imager

The TM-4000CL uses a dual-tap progressive-scan interline transfer CCD that has the following

features:

- Resolution of 2048 x 2048 active pixels for excellent image quality.

- 7.4 x 7.4 µm square pixels for precise dimensional measurement.

- High-speed electronic shutter capability for high dynamic resolution of moving objects and

electronic iris control that eliminates the need for a mechanical shutter.

- Progressive-scan CCD eliminates interlace deterioration of image and increases ease of

computer interface.

- High sensitivity and low noise at fast scanning. The CCD has an excellent S/N ratio that is

greater than 48dB.

- The CCD has a built-in microlens for increased quantum efficiency.

• Electronic shutter

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

2048 lines of vertical resolution, as compared to a conventional CCD camera which captures only

half the vertical lines per shutter.

• Asynchronous reset

The TM-4000CL captures async reset images and provides single-shot video output with single

FDV. This makes it simpler for an ordinary frame grabber to capture the async reset images. The

TM-4000CL’s asynchronous reset is flexible and accepts external horizontal drive (HD) for phase

locking. When the VINIT (5V) pulse is applied to CC1, it resets the camera's scanning and purging

of the CCD.

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

- External VINIT with pulse width. The duration between pulse edges controls the shutter

speed externally.

- Internal shutter speed control. The speed control varies from 1/125 to 1/16,000 sec. The

video signal and FDV starts with internal V reset timing related to shutter speed.

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Pulnix TM-1300 Manuale delle Istruzioni Pagina 10

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