PerkinElmer RETICON LD3500 Series User manual

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Imaging Systems
LD3500-Series Camera Instruction Manual
INSTRUCTION MANUAL
Lighting Imaging Telecom
Imaging Product Line
PerkinElmer Optoelectronics
2175 Mission College Blvd.
Santa Clara, CA 95054
Tel: [phone]
Toll Free: 800-775-OPTO (6786)
Fax: [phone]
E-Mail: [e-mail]
http://www.perkinelmer.com
055-0460-MAN

PerkinElmer Optoelectronics ii
Copyrights, Patents and Trademark Credits
PerkinElmer, the PerkinElmer Logo and the stylized P are trademarks of PerkinElmer, Inc.
Reticon is a registered trademark of PerkinElmer, Inc.
Warranty Seller warrants that the article to be delivered under this order will be free from defects in
material and workmanship under normal use and service for a period of one year from date of
shipment. The liability of Seller under this warranty is limited solely to replacing or repairing
or issuing credit (at the discretion of Seller) for such products that become defective during
the warranty period. In order to permit Seller to properly administer this warranty, Buyer
shall:
(1) Notify Seller promptly in writing of any claims;
(2) Not open the camera cover as there are no user serviceable parts inside.
(2) Provide Seller with an opportunity to inspect and test the products
claimed to be defective. Such inspection may be on customer's
premises or Seller may request return of such products at customer's
expense. Such expense will subsequently be reimbursed to customer if
the product is found to be defective; and
(3) Shall not return any product without prior return authorization from
Seller.
If a returned product is found to be out of warranty or found to be within the applicable
specification, Buyer shall pay an evaluation and handling charge, in addition to possible repair
and/or replacement costs. Seller will notify Buyer of the amount of said evaluation and
handling charges at the time the return authorization is issued. Seller will inform Buyer of
related repair and/or replacement costs and request authorization before incurring such costs.
Buyer shall identify all returned material with Seller's invoice number, under which material
has been received. If more than one invoice applies, material shall be clearly segregated and
identified by applicable invoice numbers. Adjustment is contingent upon Seller's examination
of product, disclosing that apparent defects have not been caused by Buyer's misuse, abuse,
improper installation or application, repair, alteration, accident or negligence in use, storage,
transportation or handling. In no event shall Seller be liable to Buyer for loss of profits, loss or
use, or damages of any kind based upon a claim for breach of warranty.
The aforementioned provision does not extend the original warranty period of any article
which has been repaired or replaced by Seller.
SELLER MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, AND
SPECIFICALLY, SELLER MAKES NO WARRANTY OF MERCHANTABILITY OF
FITNESS FOR A PARTICULAR PURPOSE.

iii PerkinElmer Optoelectronics
Table of Contents
1INTRODUCTION..............................................................................................................1
1.1 WHAT’S IN THIS MANUAL...................................................................................1
1.2 PURPOSE............................................................................................................1
1.3 PRODUCTOVERVIEW ..........................................................................................1
1.4 FUNCTIONAL DESCRIPTION..................................................................................1
2TYPICAL INSTALLATION................................................................................................3
3RECEIVING AND INSPECTING YOUR CAMERA ..............................................................4
3.1 UNPACKING YOURCAMERA ................................................................................4
3.2 CUSTOMER SUPPLIED COMPONENTS ....................................................................4
4CAMERA OPERATION OVERVIEW .................................................................................5
4.1 CAMERA EXPOSURE MODES (CAMERA LINK MODEL)...........................................5
4.1.1 Data Output..............................................................................................5
4.1.2 Master Mode............................................................................................6
4.1.3 Slave Mode ..............................................................................................6
4.1.3.1 Exposure Control..........................................................................6
4.1.4 Line Period Limits....................................................................................7
4.2 CAMERA EXPOSURE MODES (LVDS MODEL).......................................................7
4.2.1 MCLK Input ............................................................................................8
4.2.2 Digital Output...........................................................................................8
4.2.3 Master Mode............................................................................................8
4.2.4 Slave Mode ..............................................................................................9
4.2.4.1 Exposure Control..........................................................................9
4.2.5 Line Period Limits..................................................................................10
5INSTALLATION GUIDELINES ........................................................................................11
5.1 OPTICAL INTERFACING......................................................................................11
5.1.1 Estimating the Working Distance.............................................................12
5.2 LENS ATTACHMENT ..........................................................................................13
5.3 MOUNTING THE CAMERA ..................................................................................13
5.4 CONNECTING POWER ........................................................................................14
5.4.1 Power Supply Requirements....................................................................14
5.4.2 Power Supply Connector.........................................................................14
5.5 INTERFACE CABLING.........................................................................................15
5.6 FRAME GRABBER INTERFACE GUIDELINES .........................................................17
5.7 CLEANING THE SENSOR.....................................................................................17
6CAMERA SETUP............................................................................................................18
6.1 PREPARING FOR THE INSTALLATION...................................................................18
6.2 INSTALLING THE CAMERA .................................................................................18
6.2.1 Tripod Mounting.....................................................................................19
6.3 ACTIVATING THE CAMERA ................................................................................19
6.4 CAMERA CONTROL ...........................................................................................20
6.4.1 Camera Operating Mode Selection (Camera Link Model)..........................20
6.4.2 Camera Operating Mode Selection (LVDS Model) ...................................20

PerkinElmer Optoelectronics iv
6.4.3 Video Gain (Camera Link Model)............................................................20
6.4.4 Video Gain (LVDS Model) .....................................................................21
6.4.5 Camera Powerup....................................................................................21
6.4.6 Focusing the Camera..............................................................................22
6.4.7 Verifying Camera Gain Control...............................................................22
6.5 VERIFYING SLAVE MODE OPERATION ................................................................22
7TARGET SPEED DETERMINATION ...............................................................................23
7.1 TARGET SPEED AND EXPOSURE RELATIONSHIPS .................................................23
7.2 SAMPLE IMAGING SETUP ...................................................................................24
8TROUBLESHOOTING.....................................................................................................25
8.1 TROUBLESHOOTING CHECK LIST .......................................................................25
8.2 RMA (RETURN MATERIAL AUTHORIZATION).....................................................25
8.3 CONTACTING CUSTOMER SUPPORT ....................................................................26
APPENDIX A INTERFACE GUIDELINES .......................................................................27
A.1 RS-644 DIGITAL INTERFACE..............................................................................27
APPENDIX B FRONT PLATE DETAILED MECHANICAL DRAWING.............................28
APPENDIX C INDEX.....................................................................................................29
List of Figures
Figure 1 LD3500 Series Camera Block Diagram...................................................................2
Figure 2 Typical Machine Vision Environment.....................................................................3
Figure 3 Master Mode Timing (Camera Link Model)............................................................6
Figure 4 Slave Mode Timing (Camera Link Model)..............................................................7
Figure 5 Master Mode Timing (LVDS Model)......................................................................8
Figure 6 Slave Mode Timing (LVDS Model).......................................................................9
Figure 7 Imaging Geometry Definition ...............................................................................11
Figure 8 LD3500 Camera Front Face Attachment Point Definition .....................................13
Figure 9 LD3500 Series Camera Mounting Hole Location..................................................14
Figure 10 Test Target..........................................................................................................19
Figure 11 Test Target Placement.........................................................................................20
Figure 12 RS-644 Digital I/O Circuit..................................................................................27
List of Tables
Table 1 Line Period Limit Definition (Camera Link Model)..................................................7
Table 2 Line Period Limit Definition (LVDS Model)..........................................................10
Table 3 Camera Sensor Array Lengths................................................................................11
Table 4 Power Connector Pin Assignment ..........................................................................14
Table 5 Camera Link Model Connector Pin Assignment.....................................................15
Table 6 LVDS Model Connector Pin Assignment...............................................................16
Table 7 Operating Mode Selection (Camera Link Model) ...................................................20
Table 8 Video Gain Selection (Camera Link Model)...........................................................21
Table 9 Video Gain Selection (LVDS Model).....................................................................21

vPerkinElmer Optoelectronics

1PerkinElmer Optoelectronics
1Introduction
1.1 What’s In this Manual
This manual describes the receiving, unpacking and inspection of your LD3500
series camera. Included is a operational overview that defines the camera
operation and the controls provided. Guidance is provided for the installation,
setup and initial operation of your LD3500 camera.
1.2 Purpose
To provide machine vision system engineers and technicians a definitive guide
for integrating LD3500 series cameras into their specific machine vision
application.
1.3 Product Overview
The LD3500 series cameras are designed for linear line scan image capture
applications. 512, 1024 and 2048 pixel line scan image capture is offered at 20 or
40 megapixels/second, depending on the camera model selected. Each camera
uses a PerkinElmer P-series photodiode linear array with 14µm pixel pitch at a 14
µm aperture. This provides a 48dB dynamic range over a spectral range of 350 to
1000 nm. All camera control functions are selected by the serial connection on
the Camera Linkmodel or automatically detected on the LVDS model. Digital
I/O is provided as differential RS-644 for all camera models.
1.4 Functional Description
The LD3500 series cameras incorporate high performance, high resolution line
scan image sensors. (PerkinElmer Optoelectronics Imaging Systems parts
RL0512PAG, RL1024PAG, or RL2048PAG) featuring pinned photodiode pixels.
Each photodiode converts incident light into discrete charge packets that are
converted to an analog voltage.
The analog voltage is processed as a single channel sampled and held raster order
analog video data signal. Analog processing circuitry provides adjustable gain
levels allowing the accommodation of unique lighting requirements. Figure 1 is a
block diagram illustrating the major camera components.

PerkinElmer Optoelectronics 2
Figure 1LD3500 Series Camera Block Diagram

3PerkinElmer Optoelectronics
2Typical Installation
Figure 2 illustrates a typical machine vision installation showing the major
system components and defines the coordinate system used throughout this
manual.
Figure 2Typical Machine Vision Environment

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3Receiving and Inspecting Your Camera
3.1 Unpacking Your Camera
Inspect the received shipping container for any damage. If a shipping container
shows visible signs of damage, it should be retained until all of the contents have
been checked for completeness and absence of damage. Unpack the received
shipping container and account for each item listed on the accompanying packing
list. Visually inspect each item for absence of damage. In the event of damage,
notify the shipper and the PerkinElmer shipping department. Retain all shipping
materials for shipper inspection.
Your first LD3500 shipping container in accordance with the enclosed packing
list should contain the following:
1. LD3500 camera in static resistant envelope with unbroken seal.
2. Users Manual
3.2 Customer Supplied Components
The following components, not supplied with the camera, are required for
installation and operation of the camera in your particular machine vision
environment.
1. Camera Lens + Extender (Available by contacting PerkinElmer)
2. Camera mounting hardware
3. PC with Frame Grabber and digital I/O
4. Power Supply
5. Interface Cable (Available by contacting PerkinElmer)
6. Web illumination source
7. Web speed and light control.
This is not a complete list of items that may be required for your specific
application, but represents a minimum required to verify camera operation.
Note: The majority of the customer supplied items are peculiar to each installation and
may require custom fabrication. Guidelines for fabrication are provided in
Appendix A.

5PerkinElmer Optoelectronics
4Camera Operation Overview
The camera operation is a 2 stage process that consists of exposure and data
output transfer. This process operates the same regardless of mode. The only
differences are the events that initiate exposure and data output transfer.
The LD3500 series cameras offer multiple exposure modes for maximum
flexibility to capture image data in a variety of applications.
4.1 Camera Exposure Modes (Camera Link Model)
The following exposure modes are provided:
•Master Mode
•Slave Mode
The camera modes are selected selected by the serial connection on the Camera
Link connector. The camera communicates at 9600 Baud with 8 data bits, 1 start
bit, 1 stop bit, and no parity bits. Refer to PerkinElmer Applications Note ANP-
206.01A-8/2001 LD3500 Serial Command Language for more details.
4.1.1 Data Output
The digital video output is identical in all modes of operation. The digital video
is output together with two synchronization signals: Camera Clock (CCLK), and
Line Enable (LEN). The LEN signal brackets the valid digital video that is output
in synchronization with the CCLK. LEN is output on the LVAL signal line and
CCLK is output on the STRB signal line in accordance with the Camera Link
specification.

PerkinElmer Optoelectronics 6
4.1.2 Master Mode
The master mode is a stand-alone operating mode that requires only DC power
for operation.
Figure 3Master Mode Timing (Camera Link Model)
The exposure time in master mode is determined by the line period that is fixed at
N+70 clock cycles, where N is the number of pixels. See Table 1 for a listing of
these line periods.
4.1.3 Slave Mode
The slave mode allows the synchronization of the camera operation with a user
controlled exposure period. When operating in the Slave Mode, the user supplies
an LT (Line Transfer) signal and an optional LR (Line Reset) signal. The rising
edge of the LT signal initaites an end to the exposure time and a start of the
digital video readout. Used in conjunction with the LT signal, the LR signal
activates an electronic shutter when held low. For slave mode timing, see Figure
4.
4.1.3.1 Exposure Control
Slave mode camera exposure is determined by the LR and LT signals. The
exposure time is defined as the time between the rising edge of the LR signal and
the rising edge of the LT signal. The LR signal must be held active low (ON) for
a minimum of 6 clock cycles and must be inactive high (OFF) for a minimum of
6 clock cycles prior to and 32 cycles after the LT signal rising edge. The LT
signal must remain on (High) for at least 2 clock cycles and may remain ON until
2 clock cycles prior to the next line transfer. Because there are extra stages in the
CCD readout register there must be at least N+70 MCLK cycles between
successive LT commands.
The LR signal may be held high or left unconnected in slave mode. In this case
the integration time is defined as the time between two successive LT rising
edges.

7PerkinElmer Optoelectronics
Figure 4Slave Mode Timing (Camera Link Model)
4.1.4 Line Period Limits
Table 1Line Period Limit Definition (Camera Link Model)
Model # Pixels Clock Max Line Scan
Rate Min. Line Scan Period
LD3521 512 20 MHz 34,364 L/sec 29.1 µsec
LD3522 1024 20 MHz 18,281 L/sec 54.7 µsec
LD3523 2048 20 MHz 9,442 L/sec 105.9 µsec
LD3541 512 40 MHz 68,728 L/sec 14.6 µsec
LD3542 1024 40 MHz 36,563 L/sec 27.4 µsec
LD3543 2048 40 MHz 18,885 L/Sec 53.0 µsec
4.2 Camera Exposure Modes (LVDS Model)
The following exposure modes are provided:
•Master Mode
•Slave Mode
The camera mode is automatically detected on the LVDS model.
Note: The camera defaults to master mode on power up. If an external LT signal
is detected the camera will go into slave mode. If an unintentional LT signal
is supplied, the camera must be powered down and restarted to restore the
camera to master mode.

PerkinElmer Optoelectronics 8
4.2.1 MCLK Input
The master clock signal (MCLK) is an optional clock input applied when the user
desires a clock rate different from the default rate for the camera. The MCLK
signal is limited to be between 2 MHz and the maximum clock rate allowed for
the selected camera and may be applied in all camera operating modes. When
MCLK is applied, the camera output signals CCLK and LEN are synchronized to
MCLK to assure a locked video output.
Note: The MCLK input is automatically detected on the camera. If no MCLK input is
present or if MCLK becomes disconnected, the camera will default to its default
clock rate.
4.2.2 Digital Output
The digital video is output together with two synchronization signals: Camera
Clock (CCLK), and Line Enable (LEN). The LEN signal brackets the valid
digital video that is output in synchronization with the CCLK.
Note 1. Since the camera electronics stores a video line in memory prior to sending it to
the output, when operating in the slave mode, the first line output after the first
LT has been issued is not valid.
Note 2. CCLK – Digital video data can be sampled using the rising edge of the CCLK
signal..
4.2.3 Master Mode
The master mode is a stand-alone operating mode that requires only DC power
for operation.
Figure 5Master Mode Timing (LVDS Model)
The exposure time in master mode is determined by the line period that is fixed at
N+76 clock cycles, where N is the number of pixels. See Table 2 for a listing of

9PerkinElmer Optoelectronics
these line periods. For proper master mode operation, LR must be held in a High
state or left unconnected.
4.2.4 Slave Mode
The slave mode allows the synchronization of the camera operation with a user
controlled exposure period. When operating in the slave mode, the user must
supply an LT (Line Transfer) input and an LR (Line Reset) input.
4.2.4.1 Exposure Control
Slave mode camera exposure is determined by the LR and LT signals which must
be timed with MCLK. The exposure time is defined as either (a) the time between
successive falling edges of the LT signal or (b) the time when the LT signal is
held high. To select the exposure control mode described in (a), the user must
hold LR in a high (ON) state or leave these pins unconnected. To select the
exposure control mode described in (b), the user must hold the LR signal in a low
(OFF) state. In case (b), the LT signal must be held active high (ON) for a
minimum of 2 clock cycles and must be inactive high (OFF) for a minimum of 6
clock cycles. Because there are extra stages in the CCD readout register there
must be at least N+76 clock cycles between successive LT commands.
Figure 6Slave Mode Timing (LVDS Model)

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4.2.5 Line Period Limits
Table 2Line Period Limit Definition (LVDS Model)
Model # Pixels Clock Max Line Scan
Rate Min. Line Scan Period
LD3521 512 20 MHz 34,013 L/sec 29.4 µsec
LD3522 1024 20 MHz 18,181 L/sec 55.0µsec
LD3523 2048 20 MHz 9,416 L/sec 106.2 µsec
LD3541 512 40 MHz 68,027 L/sec 14.7 µsec
LD3542 1024 40 MHz 36,363 L/sec 27.5 µsec
LD3543 2048 40 MHz 18,832 L/Sec 53.1 µsec

11 PerkinElmer Optoelectronics
5Installation Guidelines
The following guidelines are offered as an aid to permit the user for setting up the
camera such that it can be verified for proper operation. Specific requirements are
included only for items closely related to the camera operation.
5.1 Optical Interfacing
The LD3500 series cameras require properly chosen lenses and lens extenders to
allow the imaging of the chosen web width onto the sensor array. Table 3 shows
the array length and number of pixels on the array for each camera model.
Table 3Camera Sensor Array Lengths
Camera Model Active Array Length (AL) Active Pixels
LD3521 0.28" (7.168 mm) 512
LC3522 0.56" (14.336 mm) 1024
LC3523 1.13" (28.672 mm) 2048
LC3541 0.28" (7.168 mm) 512
LC3542 0.56" (14.336 mm) 1024
LC3543 1.13" (28.672 mm) 2048
Figure 7Imaging Geometry Definition

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5.1.1 Estimating the Working Distance
The following relationships assume a thin lens relationship that is deemed
sufficiently accurate to permit reasonably accurate estimates of the optical
configuration. Referring to Figure 6:
f
AF
EXT
ID
+
+
=
WD
ID
X
AL
M==
1
*
+
=
M
MWD
f
M
Mf
WD )1(*
+
=
Where: ID = Image Distance
EXT = Length of Extender
AF = Sensor to Camera Face distance
f = focal length of lens
AL = Length of sensor array
X = Web with imaged
M = magnification
WD = working distance
Since the actual results will vary from these idealized estimates, sufficient
adjustment capability is required.
Example
Assuming that an 80 mm lens has been chosen for an LD35XX camera and is
installed without an extender and that it is desired to image a 36” (882 mm) web.
The following calculations result in the working distance estimate:
5
.
85
80
8
.
5
=
+
=
mm
mm
ID
065.0
882
3.57 === mm mm
X
AL
M
The estimated working distance then is:
)"8.51(4.1315
065
.
5.85 mm mm
M
ID
WD ===

13 PerkinElmer Optoelectronics
5.2 Lens Attachment
The LD3500 series cameras provide threaded mounting holes on the front face of
the cameras to allow the attachment of custom lens adapters. The lens mount is a
M42 x 1 (Pentax, U-mount) thread. PerkinElmer can provide such optical
components as lenses, C and F style lens adapters, extension tubes, and focusing
systems. Figure 7 shows the location of mounting holes and registration holes for
the attachment of custom lens adapters. See Appendix B for a more detailed
faceplate drawing.
Figure 8LD3500 Camera Front Face Attachment Point Definition
5.3 Mounting the Camera
Camera mounting distance from the object to be imaged is determined by the
required object width X, the camera array size and the selected lens and
extension. See section 1 for some general guidelines for physically locating your
camera for your application. Mounting the camera requires the supplied mounting
plate or customer supplied adapter. Figure 8 shows the location of the mounting
holes for attaching the camera to the mounting surface, specifies the mounting
hole thread and defines the sensor optical distance setback AF (5.8 mm). The
same mounting provisions are provided on each of the camera 4 sides.
Perkinelmer recommends mounting using the 8 4-40 holes located on the
faceplate of the camera. This method insures a good thermal path between the
sensor and surrounding equipment, which is helpful in minimizing sensor noise.
Note: To install the mounting plate you must remove the two phillips head screws first.
These screws are reused to attach the mounting plate.

PerkinElmer Optoelectronics 14
Figure 9LD3500 Series Camera Mounting Hole Location
Note: For best thermal stability, mount the camera to a flat metal surface using the
faceplate holes.
5.4 Connecting Power
Warning: It is the buyers responsibility to comply with all applicable code
requirements.
5.4.1 Power Supply Requirements
The power supply must provide at the camera:
+12 to +24 VDC
6 W total input power
5.4.2 Power Supply Connector
The LD3500 camera receives its power from a 6-pin Hirose HR-10A circular
connector. The power connector is common to both models.
Table 4Power Connector Pin Assignment
Signal Pin Description
12-24VDC 1Input Voltage
12-24VDC 2Input Voltage
N/C 3No Connection
N/C 4No Connection
COMMON 5Input Voltage Return