Fairchild CAM/CMOS-2K.LS Manuale utente

OWL CAMERA SERIES

CAM/CMOS-2K.LS

ULTRA-HIGH PERFORMANCE

Line Scan Camera

Camera User’s Manual

Models RDI & MRDI

EMC Conformance

This equipment has been tested and found to comply with the limits for a Class A digital

device, pursuant to Part 15 of the FCC Rules.

This product fulfills the following requirements of the standards and carries the CE

marking.

EMC: FCC Part 15, Subpart B

EN 6100-6-4:2001

EN 6100-6-2:2001

EN6100-3-2:2000

EN 6100-3-3:1995/A1:2001

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev C• 2 of 42

FAIRCHILD IMAGING

OWL CAMERA SERIES

USERS MANUAL

The CAM/CMOS-2K.LS Line Scan Camera

Rev B

Fairchild Imaging, Inc.

1801 McCarthy Blvd.

Milpitas CA 95035 USA

1-800-325-6975

www.fairchildimaging.com

PRELIMINARY DOCUMENT

The information in this manual is preliminary.

All information provided in this manual is believed to be correct at the

time of writing. No responsibility is assumed by Fairchild Imaging for its

use. Fairchild Imaging intends to make this manual as accurate as

possible and reserves the right to make changes to this information

without notice.

Terminology

Every effort has been made in this manual to use standard, consistent

definitions. In particular, the following terminology has been adopted:

• Configuration refers to CameraLinkTM setup including choice of

Base, Dual Base or Medium; one or two PCs; transmitted data

path width, etc.

• Mode refers to synchronization control; i.e., Freerunning, ExSynch,

etc.

• Parameter refers to user-settable variables such as exposure

(integration) time, line rate, etc.

• Environment refers to the entire collection of user-settable items:

configuration, mode, parameters, image/test pattern, etc.

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev C• 3 of 42

Table of Contents

SECTION 1

Introduction to the CAM/CMOS-2K.LS

Ultra-High Performance Line Scan Camera ........................................................ 6

1.1 Camera Highlights............................................................................................ 6

1.2 Camera Specification: RDI and MRDI Performance Specification .................. 7

1.3 Thermal Considerations ................................................................................... 8

1.4 Image Sensor................................................................................................... 9

SECTION 2

Camera Hardware Interface..................................................................................11

2.1 Installation Overview ........................................................................................11

2.2 Connectors, Pinouts and Cables ......................................................................11

2.3 Power Supply ...................................................................................................12

2.4 LED Indicator Status Lamp ..............................................................................13

SECTION 3

Camera Control .....................................................................................................14

3.1 Quick Start with the Camera Link™ Interface ..................................................14

3.2 Commands.......................................................................................................14

3.3 Camera Command Summary...........................................................................18

3.4 The Four Modes for Synchronizing with the CAM/CMOS-2K.LS .....................19

SECTION 4

Mechanical and Optical Guidance .......................................................................26

4.1 Camera Dimensions and Mounting Facilities ...................................................26

4.2 Lensing.............................................................................................................27

4.3 Lens Mount Extender Tube ..............................................................................27

4.4 Mechanical Drawing of Available Camera Face Mounting “L” Bracket.............29

4.5 Lenses..............................................................................................................30

4.6 Positioning Accuracy of the Sensor Chip in the Camera ..................................30

4.7 Illumination .......................................................................................................30

4.8 Light Sources ...................................................................................................30

4.9 Lens Modeling ..................................................................................................31

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev C• 4 of 42

SECTION 5

Handling Instructions ...........................................................................................32

5.1 Electrostatic Discharge.....................................................................................32

5.2 Preventing ESD Damage .................................................................................32

5.3 Protecting Against Dust, Oil and Scratches......................................................32

5.4 Cleaning the Sensor Window ...........................................................................32

SECTION 6

Troubleshooting....................................................................................................33

6.1 Check the Obvious Things First .......................................................................33

6.2 Use the Camera Control Interface to Perform Checks .....................................33

6.3 Other Areas You Should Check .......................................................................33

SECTION 7

Product Support....................................................................................................35

REFERENCE A

Camera Link™ Introduction .................................................................................36

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev C• 5 of 42

SECTION 1

Introduction to the CAM/CMOS-2K.LS

Ultra-High Performance Line Scan Camera

1.1 Camera Highlights

Description

The OWL CMOS Line Scan Camera is an ultra-sensitive camera for use in line scan applications

that demand high performance under low light conditions. The camera is based upon a 2K CMOS

linear sensor that utilizes an active reset technology to obtain high performance in low light

applications while operating at very high data rates. Two versions of this camera are available.

RDI (Read During Integration) mode runs at line rates up to 38 KHz.

Read noise for this version is ~9e- (<5.7DN in 12 bit data).

MRDI (Multiple Read During Integrate) mode has a maximum read noise

of 0.4e- at a maximum line rate of 2.9KHz.

The CMOS linear sensor that is used in this camera has a unique feature that allows gain

selectability at the pixel level. The gain of each pixel can be switched between high or low gain. In

the high gain mode, the noise is minimized, while in the low gain mode, the dynamic range is

maximized.

The 12-bit output of this camera line utilizes CameraLink and will provide data at 80 MHz (40 MHz

per output). The camera offers features such as anti-blooming and programmable gain and offset.

It is packaged in a very compacted and rugged housing that contains a standard M58 x 0.75 base

lens thread. Optional (Nikon F or C Mount) lens adapters are available.

Programmability

• Simple menu-based configuration for selection of gain, calibration, test patterns operational

control, and diagnostics.

• CameraLink TM camera-PC communications.

Usability

• Programmable gain, offsets, and controls

• Internal flat field correction

• Easy integration “plug compatible” Camera LinkTM interface

• Exposure control

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev C• 6 of 42

Full Spectrum of Applications

• Precision manufacturing inspection

• Web inspection

• Sorting and routing

• Biomedical readout systems

• Diagnostic systems

1.2 Camera Specification:

RDI and MRDI Performance Specification

Table 1.2.1

Functions RDI MRDI

Data rates Up to 80 MHz Up to 80 MHz

Line rates 38 KHz 2.9 KHz

Dynamic Range High gain 650:1

Low gain 1100:1

High gain 10,000:1

Low gain 31,000:1

Resolution 2048 pixels 2048 pixels

Pixel size 7µm x 7µm 7µm x 7µm

Max Clock speed 80 MHz 80 MHz

Max Pixel Clock per Output 40 MHz 40 MHZ

Anti Blooming 15000 X 15000 X

Digitized (ADC) Output 12 bits 12 bits

Pixel gain selectable pixel-by-

pixel

1X or 8.5X 1X or 8.5X

Output Gain Range 18 dB 18 dB

External Synchronization Option available Option available

Random Noise (pk-pk) rms* 44DN pk-pk, 6DN RMS 3DN pk-pk, 0.4DN RMS

Noise Equivalent Exposure 9.7 pJ/CM2 * .7 pJ/CM2

Sat. Equivalent Exposure 5 nJ/CM2 * 40 nJ/CM2** 5 nJ/CM2 40 nJ/CM2**

Intuitive command-control

instruction set

See Section 3.2 See Section 3.2

Sensitivity: High gain

Low gain

>700 DN/nJ/cm2

61.5 DN/nJ/cm2

>700 DN/nJ/cm2

61.5 DN/nJ/cm2

Flat field correction Internal Internal

Lens mount type M58 to Nikon F-mount &

C – mount

M58 to Nikon F-mount &

C-mount

Body Size (W H D) 3.92” W x 3.92”H x 1.84 D 3.92” W x 3.92”H x 1.84 D

Power Supply 5.0V 5.0V

Power Dissipation 2.5W 2.5W

Ambient Operating Temp 0 to 45°C 0 to 45°C

Storage Temp 0 to 75°C 0 to 75°C

Power Connector 4 – pin Hirose HR10A-7R-4P 4 – pin Hirose HR10A-7R-4P

Data Connector MDR-26 CameraLinkTM config.

Single Base

One 3m 10226-6212VC

MDR-26 CameraLinkTM config.

Single Base

One 3m 10226-6212VC

Control connector CameraLinkTM Connectors CameraLinkTM Connectors

*At High Gain ** At Low Gain

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev C• 7 of 42

Table 1.2.2

Settings and Controls

Function Factory

Calibrated

User

Settable

Camera

Link

Reset to Default Conditions X X

Fixed Pattern Noise Correction X X X

PRNU Correction X X

Integration Time X X

External Synch / Free Run X X

Pixel Level Gain X X

Line Synchronization X X

Test Patterns X X X

1.3 Thermal Considerations

The CAM/CMOS 2K.LS has been carefully designed to separate the camera electronics

from the image sensor. In addition, the Fairchild Imaging CMOS sensor runs cooler than a

CCD device.

Fairchild Imaging advises waiting until the camera has stabilized

thermally before performing offset and gain corrections. You can determine

that the camera has stabilized thermally by repeatedly using the "TSB"

command to read sensor temperature. When sensor temperature changes

less than 0.1

C per minute, the camera has stabilized.

Try to avoid excess temperatures in the ambient around the camera.

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev C• 8 of 42

Figure 1.3.1

RDI and MRDI Responsivity Curve

1.4 Image Sensor

Pixel level processing image sensors are based on the principle that photons induced by charge at

the pixel site should be converted to, as nearly as possible, a noise-free signal at the pixel site.

The application of this principle produces the lowest possible noise and also allows signal control

at each pixel.

As is true in other sensors, photons induce charge which is collected on a capacitor at the photo

site. In a pixel level processing sensor, this charge is converted to an amplified voltage at the

pixel. This voltage is then read out through a multiplexor to an external circuit. Since the readout

starts with a strong signal, the dominant read noise source is the noise associated with the charge

accumulation at the pixel.

The 2048 x 1 linear CMOS image sensor uses a low fixed pattern noise capacitive transimpedance

amplifier (LFPN CTIA) pixel architecture. The pixel also includes circuitry for reducing 1/f noise,

correlated double sampling, electronic shuttering, and a horizontal anti-blooming drain. High speed

non-destructive readout of the sensor is achieved by using a hierarchial readout structure with two

output ports.

In simplified form, the pixel integration cycle consists of three steps: 1) reset the capacitor to fully

charged, 2) accumulate electrons on the capacitor, and 3) read the resulting charge value.

Conventionally these steps have been done by sensor-wide controls. Use of pixel level processing

results in at least an order of magnitude reduction in noise due to the reset step as well as noise

reduction in the multiplexing of the pixel values and the noise due to amplification for off chip drive.

Shown on the following page is a block diagram of the Fairchild Imaging 2048 x 1 CMOS sensor.

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev C• 9 of 42

Figure 1.4.1

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev C• 10 of 42

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