MotionVision® CA-D6-xxxxW High-Speed Area Scan Cameras Camera User’s Manual 03-32-00225 rev 06 Printed 03/18/99 10:00 AM
CA-D6-xxxxW User’s Manual CA-D6-xxxxW Camera User’s Manual Document Number 03-32-00225 Revision Level 06 © 1998 DALSA Inc. All information provided in this manual is believed to be accurate and reliable. No responsibility is assumed by DALSA for its use. DALSA reserves the right to make changes to this information without notice. Reproduction of this manual in whole or in part, by any means, is prohibited without prior permission having been obtained from DALSA INC.
CA-D6-xxxxW User’s Manual 3 CA-D6-XXXXW USER’S MANUAL Contents 1.0 Introduction to the CA-D6 5 1.1 Camera Highlights........................................................................................... 5 1.2 Image Sensor .................................................................................................. 5 1.3 Camera Performance Specifications............................................................... 7 1.4 CCD Camera Primer ......................................................
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CA-D6-xxxxW User’s Manual CHAPTER 1 1.0 Introduction to the CA-D6 1.
CA-D6-xxxxW User’s Manual Figure 1. IA-D6-0256 Image Sensor VPS VPS 269 Rows or 525 Rows 260 Columns or 532 Columns 6I 6I 6I 6I 4 CCD Readout Shift Registers OS2 OS1 OS3 OS4 CRLAST VPS 6I 6 isolation CCD cells Note: All readout shift registers have the same clocks and output structure as OS1. 2 R esp o n siv ity [D N /(n J/c m )] Figure 2. CA-D6 Camera Spectral Response 1 .4 1 .2 1 .0 0 .8 0 .6 0 .4 0 .
CA-D6-xxxxW User’s Manual 1.3 Camera Performance Specifications Table 1. CA-D6-xxxxW Performance Specifications Calibration Conditions Frame Rate (FVAL) 256x256 512x512 Data Rate (STROBE) Halogen light source Specification Saturation Output Amplitude Photoresponse Non-Uniformity (PRNU) PRNU with exposure control Fixed Pattern Noise (FPN) Output Gain Mismatch Mean Output Offset Random Noise Noise Equivalent Exposure Saturation Equivalent Exposure Responsivity Dynamic Range Supply Current (256/512) +15.
CA-D6-xxxxW User’s Manual 1.4 CCD Camera Primer How CCD Image Sensors Work In a CCD camera such as the CA-D6-xxxxW, a CCD image sensor converts photons (light) into electrons (electricity). When photons hit an image sensor, an electron is released, and the sensor adds this electric charge to the charge it has already collected. This is called charge integration.
CA-D6-xxxxW User’s Manual CHAPTER 2 2.0 Camera Hardware Interface 2.1 Installation Overview In order to set up your camera, you should take these steps: 1. Decide on modes of operation—will you use USR_EN? 2. Test and connect power supplies. 3. Test and connect User Bus control signals from framegrabber. 4. Test and connect data signals output from camera.
CA-D6-xxxxW User’s Manual 2.3 Connectors, Pinouts, and Cables DB50F—Data BusOS1/OS2 and OS3/OS4 Camera connector uses crimp labeling convention for pin numbers 2(34) Crimp label Solder label 2(34) 50(50) 3(18) 48(33) 1(1) 49(17) Mating Part: Amphenol 17D-D50P (solder pin) with shell 17-1657-50 Cable: 26 AWG 100Ω shielded twisted pair Note on DB50 connectors: There are several standard ways to number the pins of DB50 connectors.
CA-D6-xxxxW User’s Manual DB15M—Power Mating Part: Amphenol 17D-A15S with shell 17-1657-15 Cable: 22 AWG min. shielded Pin 1 2 3 4 5 6 7 8 Signal DGND +5V Digital not used -5V Digital Not used +15V +15V AGND Pin 9 10 11 12 13 14 15 Signal +5V Digital DGND not used not used -5V Analog AGND +5V Analog DB15F—Control Mating Part: Amphenol 17D-A15P with shell 17-1657-15 Cable: 22 AWG min.
CA-D6-xxxxW User’s Manual 2.5 User Bus (Inputs) The User Bus uses a DB25 connector and includes the mandatory control signal EXSYNC and optional signal PRIN. These signals must be supplied from your framegrabber to the camera using EIA-644 (differential) format, which requires the use of twisted pair cable. DALSA recommends shielded cables. Maximum cable lengths depends on environmental factors and EIA-644 limitations. See Appendix A.
CA-D6-xxxxW User’s Manual Application Tip: Combining Input Signals for Exposure Control and “Snapshot” Operation When used together, EXSYNC and PRIN can give very precise control over exposure and image capture. The examples below illustrate some camera operating options. Figure 3 depicts the operation of the camera when EXSYNC is kept low and PRIN high at all times.
CA-D6-xxxxW User’s Manual Figure 5 shows the operation of the camera when EXSYNC and PRIN are both user controlled. The start of the exposure time depends on the rising edge of PRIN in combination with the falling edge of EXSYNC. The exposure time is defined from the rising edge of PRIN to the falling edge of EXSYNC. PRIN must be kept low for 6.5±1µs to drain all charge that was previously collected. Note also that the camera will ignore PRIN inputs during frame readout. Figure 5.
CA-D6-xxxxW User’s Manual Figure 6. Event-Triggered Image Capture Trigger event exposure time EXSYNC MODE wait state exposure frame transport frame readout PRIN Note that to have the camera react to an external event, your imaging system must detect the event and then send the appropriate EXSYNC and PRIN signals to the camera to cause it to capture images. 2.6 Data Bus Digital Data See section 2.3 for pinouts.
CA-D6-xxxxW User’s Manual USR_EN—Input for Multiplexing USR_EN is an input used during camera multiplexing. When multiple cameras share the same data bus, their digital data outputs can be placed into tri-state by connecting USR_EN to logic LOW. Connecting USR_EN to logic HIGH activates a camera’s outputs. USR_EN is an optional signal; if not using USR_EN, connect it to logic HIGH and USR_ENB to logic LOW. 2.7 Timing When exposed to light, the sensor collects charge.
CA-D6-xxxxW User’s Manual Figure 8. CA-D6-xxxxW Detailed Timing Symbol Description DALSA INC. Min. Typ. -2 0 Max. Unit TLSW ↑LVAL to ↓STROBE TLSZW ↓LVAL to ↓STROBE -2 0 2 ns TSETUP Data setup 18 23 28 ns THOLD Data hold 12 17 22 ns TPL PRIN pulse 5.5 6.5 7.
CA-D6-xxxxW User’s Manual 2.8 Multi-Camera Operation Camera Multiplexing Camera multiplexing puts multiple cameras on the same data bus. All the multiplexed cameras are spliced into the same data cable; this is possible because the camera’s output line drivers can be tri-stated. The usual control signals can be spliced on a single cable, but they can also be kept separate for each camera.
CA-D6-xxxxW User’s Manual CHAPTER 3 3.0 Optical and Mechanical Considerations 3.1 Mechanical Interface The camera’s electronics are housed in a rugged anodized aluminum case. Mounting For maximum stability and best heat sinking, DALSA recommends mounting the camera by its front plate. There are four M4 holes and seven 4-40 UNC holes tapped into the front plate for mounting the camera or attaching heat sinking.
CA-D6-xxxxW User’s Manual 3.2 Optical Interface Front plate C-mount Z-axis aligner Imager clamp Die 17.5 mm The CA-D6-xxxxW camera comes with a mount adapter for C-mount lenses, which have a back focal distance of 17.5 mm. Ensure that the image circle diameter of the lens to be used is as great as the diagonal of the imaging region of the image sensor. IMPORTANT: The camera’s Z-axis alignment is optimized for the adapter provided.
CA-D6-xxxxW User’s Manual Light Sources Keep these guidelines in mind when setting up your light source. • Halogen light sources generally provide very little blue relative to IR. • Fiber-optic light distribution systems generally transmit very little blue relative to IR. • Some light sources age; over their lifespan they produce less light. This aging may not be uniform—a light source may produce progressively less light in some areas of the spectrum but not others.
CA-D6-xxxxW User’s Manual m= h′ h where m is the magnification, h’ is the image height (pixel size) and h is the object height (desired object resolution size). By similar triangles, the magnification is alternatively given by: m= f′ OD These equations can be combined to give their most useful form: h′ f′ = h OD This is the governing equation for many object and image plane parameters.
CA-D6-xxxxW User’s Manual 3.3 EMC Operation The CA-D6 has been designed for EMC compliance. The test setup shown below has been verified to the limits set in EMC standards IEC 1000-4-2; 1995, 1000-4-3; 1995, 1000-4-4; 1995, and CISPR-22. Data Bus: 3M #3750-50, 6’ (1.8m), shielded jacketed twisted pair Data Bus: 3M #3750-50, 6’ (1.8m), shielded jacketed twisted pair Data Bus: 3M #3750-50, 6’ (1.8m), shielded jacketed twisted pair User Bus: 3M #3750-9, 6’ (1.
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CA-D6-xxxxW User’s Manual CHAPTER 4 4.0 Troubleshooting The information in this chapter can help you solve problems that may occur during the setup of your camera. Remember that the camera is part of the entire acquisition system. You may have to troubleshoot any or all of the following: • power supplies • cabling • framegrabber hardware & software • host computer • light sources • optics • operating environment • encoder Your steps in dealing with a technical problem should be: 1.
CA-D6-xxxxW User’s Manual Figure 10. Troubleshooting Flowchart START Check setup see Chapter 2 Check power supply. Are voltages correct? No Yes Are voltages correct at camera end of power cable? No Yes Is ± EXSYNC signal present? No Yes Are ± LVAL, ± FVAL, ± STROBE signals present? No Yes • Scope the digital video • Under varying illumination, trigger from LVAL while looking at each individual digital bit.
CA-D6-xxxxW User’s Manual Data Clocking/Output Signals Verify the presence of all data clocking and output signals. Trigger the oscilloscope from the rising edge of FVAL (ch1; DC coupled). Adjust the oscilloscope time base to allow for a complete cycle of each signal: • STROBE—Verify the presence of the STROBE and STROBEB signals. There should be a continuous clock signal present at the same frequency as your data rate. • LVAL—Verify the presence of the LVAL and LVALB signals.
CA-D6-xxxxW User’s Manual 5. Moisten the pad on one edge with 2-3 drops of clean solvent—either alcohol or acetone. Do not saturate the entire pad with solvent. 6. Wipe across the length of the window in one direction with the moistened end first, followed by the rest of the pad. The dry part of the pad should follow the moistened end. The goal is to prevent solvent from evaporating from the window surface, as this will end up leaving residue and streaking behind. 7.
CA-D6-xxxxW User’s Manual 4.3 Product Support If the troubleshooting flowchart indicates a problem with your camera, collect the following data about your application and situation and call your DALSA representative. Note: You may also want to photocopy this page to fax to DALSA. Customer name Organization name Customer phone number fax number Complete Product Model Number (e.g.
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CA-D6-xxxxW User’s Manual CA-D6-XXXXW USER’S MANUAL Appendix A: EIA-644 Reference EIA-644 is an electrical specification for the transmission of digital data. The standard is available from the EIA (Electronic Industries Association). It defines voltage levels, expected transmission speeds over various cable lengths, common mode voltage operating requirements for transmitters and receivers, and input impedances and sensitivities for receivers.
CA-D6-xxxxW User’s Manual in a DALSA camera are terminated with 100 Ohms between the (+) and (-) of a signal. Figure A-1 (a) shows an example of an EIA-644 transmission. DALSA indicates the (+) signal by the name of the signal; i.e. MCLK, while the (-) signal is indicated by either an overscore over the name or appending the letter B to the end of the name; i.e. MCLK or MCLKB. The (+) signal has the same sense as the TTL signal which is sent or received; i.e.
CA-D6-xxxxW User’s Manual (unconnected, shorted, or unterminated). Do not connect cables to unused inputs. Cables can act as antennae and cause erratic camera behavior. Cable Lengths Figure 12 shows a graph of ideal communication data rate vs. cable length for the EIA-644 standard. Figure 12. EIA-644 Data Rate vs. Cable Length 1000 Data Rate (Mbps) 20% Jitter Measured at 0V Differential 20% Jitter Measured at ±0100mV Differential 100 CAT3 Cable Typical Data Rate vs.
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CA-D6-xxxxW User’s Manual CA-D6-XXXXW USER’S MANUAL Appendix B: EMC Declaration of Conformity We, DALSA INC. 605 McMurray Rd., Waterloo, ON CANADA N2V 2E9 declare under sole responsibility, that the product(s): CA-D6-0256W-ECEW CA-D6-0512W-ECEW meets the test (limits) for: Electrostatic Discharge, IEC 1000-4-2; 1995 Radiated Immunity, IEC 1000-4-3; 1995 Burst ELF, Class III, IEC 1000-4-4; 1995 Radiated Emissions, CISPR 22 and therefore correspond(s) to the regulations of the EU-Directive 89/336/EEC.
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CA-D6-xxxxW User’s Manual CA-D6-XXXXW USER’S MANUAL Index 1 E 100% fill factor • 5 A/D boards • 5 About DALSA • 2 asynchronous reset (PRIN) • 12 EMC compliance • 5, 23 EMC Declaration of Conformity • 35 EMC Operation • 23 environmental considerations • 19 Event-Triggered Image Capture • 15 EXSYNC • 12 troubleshooting • 25 B F bucket analogy • 8 fiber-optic light sources • 21 fill factor • 5 Filters • 21 free-run mode • 13 full-well capacity • 8 FVAL • 15 A C cable lengths • 12 cables • 11 le
CA-D6-xxxxW User’s Manual Introduction to the CA-D1 • 5 L Lens Modeling • 21 light sources • 21 Logic HIGH and LOW • 31 LVAL • 15 troubleshooting • 27 M magnification • 21 mechanical interface • 19 mounting • 19 multi-camera operation • 18 multiplexing, camera • 18 R RS422 reference • 31 S shuttering, electronic (PRIN) • 12 snapshot operation • 15 state diagrams • 16 STROBE • 15 troubleshooting • 27 stuck bits • 28 T noisy output • 27 Technical Sales Support • 29 temperature • 19 Timing • 16 timi
