PRELIMINARY
General Description
The TM-4000CL is a miniature, very high-resolution (4.2
Mpixels) monochrome progressive scan CCD camera with dual
tap output. The imager resolution is 2048 x 2048 pixels and the
frame rate is 7.5 and 15 frames per second. The interline transfer
CCD permits full vertical and horizontal resolution of high-speed
shuttered images. The electronic shutter has speeds up to
1/16,000 sec. and can be reset asynchronously by external pulse
control.
The TM-4000CL has a patent-pending, PULNiX exclusive,
built-in look-up table (LUT) and automatic dual channel
compensation. This full dynamic range control function can be
set at externally selectable knee slopes to optimize the CCD's full
dynamic range in the normal output signal range. It also provides
fast 10-bit (10-bit x 2) to 8-bit (8-bit x 2) pre-processing for
effective image feature enhancement. The camera has both
analog (multiplexed to single channel output) and digital (Camera
Link) output for interfacing with frame grabbers.
All camera control functions are externally controlled via a
user-friendly Camera Link or RS-232C graphical interface
provided by PULNiX.
Applications for the TM-4000CL include machine vision,
medical imaging, intelligent transportation systems, high-
definition graphics, gauging, character recognition, documents
archiving, and surveillance.
Asynchronous Reset
The TM-4000CL's asynchronous reset is flexible and accepts
external horizontal drive (HD) for phase locking. When the VINIT
pulse is applied, it resets the camera's scanning and purging of
the CCD. There are two modes to control the asynchronous reset
and shutter speed:
1 External VINIT with pulse width. The duration between pulse
edges controls the shutter speed externally.
2 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.
Product Summary
•
High-resolution 1.2" progressive scan
2048(H) x 2048(V) interline transfer CCD imager
•
Miniature 50x50x70 mm housing with high-rel
connector
•
Digital Camera Link dual tap output and analog output
(ch.A only)
•
7.5 frames and 15 frames per second selectable
•
Maximum dynamic range control with PULNiX-
exclusive, patent-pending built-in look-up table
(Gamma, knee, user parameters)
•
Full frame integration, partial scan (1000, 500 lines)
•
Full-frame shutter to 1/16,000 sec.
•
Asynchronous reset, no-delay shutter and read-out-
inhibit control for multiple camera applications
•
Camera Link or RS-232 external control
•
Automatic dual channel compensation
•
Built in pattern generator and scan conversion
•
Color version (RGB Bayer CFA) is available (TMC-4000)
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. (double the speed at 60 fps mode)
The CCD discharges when discharge pulse is applied via
internal shutter control. With a negative pulse to VINIT, the
camera resets and purges the CCD charge momentarily. Then it
starts integrating for the period of preset shutter control time 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.
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 applying INTEG signal
to pin #11 of the 12-pin connector or ccl2 control of Camera
Link, or by feeding VINIT pulse width control up to 3 sec of the
pulse width in async pulse width control mode.
www.pulnix.com
TM-4000CL AccuPiXEL Series
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