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Operation and Features
Basler L304kc 3-21
Draft
3.5.6 System Design Calculations
Assuming that the camera operating requirements listed in Section 3.5.4 and the system design
requirements listed in Section 3.5.5 are met, the formulas below can be used to calculate the basic
design criteria for your system.
Magnification
where: β = magnification
n = number of line captures needed to move the image from sensor line
to sensor line (see Table 3-3)
Δy = distance the conveyor moves per line capture
Line of View
where: L = length of the line of view of each sensor line
Aspect Ratio
The aspect ratio of your captured images is determined by the value of “n” in the magnification
equation. The value can be set from 1 to 27. If the value is set to 9, the aspect ratio of the captured
images will be 1 to 1. The aspect ratios for various values of “n” are listed in Table 3-3. The aspect
ratios in the table are width to height where width is in the direction of conveyor travel and height
is along the axis of the sensor lines.
Once the magnification has been determined, you can select a lens with the appropriate focal
length and determine the correct distance between the camera and the conveyor. If you need
more assistance with your lens selection, please contact Basler Technical Support.
n Ratio n Ratio n Ratio n Ratio n Ratio n Ratio
1 1/9 6 2/3 11 11/9 16 16/9 21 7/3 26 26/9
2 2/9 7 7/9 12 4/3 17 17/9 22 22/9 27 3/1
3 1/3 8 8/9 13 13/9 18 2/1 23 23/9
4 4/9 9 1/1 14 14/9 19 19/9 24 8/3
5 5/9 10 10/9 15 5/3 20 20/9 25 25/9
Table 3-3: Aspect Ratios for Values of n
β
90 µm
n
Δ× y
----------------
=
L 40.80 mm
1
β
---
×=
- Basler L304kc 1
- Table of Contents 5
- Contents 10
- VI Basler L304kc 10
- 1 Introduction 11
- Introduction 12
- 1-2 Basler L304kc 12
- Specification 12
- 1.3 Spectral Response 13
- 1.4.2 Heat Dissipation 14
- 1.5 Precautions 15
- 2 Camera Interface 17
- Camera Interface 18
- 2-2 Basler L304kc 18
- Connector Pin Numbering 19
- 2.2 Cable Information 20
- 2-6 Basler L304kc 22
- 2.4 Input Signals 23
- 2.5 Output Signals 24
- 2.5.4 Video Data 25
- Video Data Sequence 26
- Basler L304kc 2-11 27
- 2-12 Basler L304kc 28
- Basler L304kc 2-15 31
- 2.8 DC Power 34
- 3 Operation and Features 35
- 3.2 Video Data Output Modes 37
- 3.3.2 Free Run 42
- Setting the Exposure Time 43
- 3.4 Integrate Enabled Signal 44
- 3.5 Spatial Correction 45
- Spatial Correction 50
- Sensor Perpendicularity 52
- Sensor-Conveyor Parallelism 53
- Object Height Differences 54
- Example 1 56
- Example 2 57
- 3.6 Gain and Offset 60
- 3.6.2 Gain Lock 62
- 3.6.4 Offset Lock 64
- 3.6.5 Clipping 65
- 3.7 Area of Interest (AOI) 66
- 3.7.1 Setting the AOI 67
- 3.8 Stamp 68
- 3-36 Basler L304kc 70
- Stamp Pixels S1 and S2 71
- Stamp Pixels S3 and S4 71
- Stamp Pixels S5, S6 and S7 71
- Stamp Pixel S8 71
- Stamp Pixels S9 and S10 71
- Stamp Pixels S11 and S12 72
- Stamp Pixels S13, S14 and S15 72
- Stamp Pixel S16 72
- 3.9 Mirror Image 74
- 3.10 Image Enhancements 75
- 3.10.4 Color Shift Correction 84
- 3.11 Test Images 86
- (Fixed Red Gradient) 90
- (Fixed Green Gradient) 90
- (Fixed Blue Gradient) 91
- 3.12 CCD Temperature Sensor 94
- 3.15 Status LED 97
- 3.16 Resetting the Camera 98
- 3.17 Configuration Sets 99
- Activating a User Set File 100
- Operation and Features 103
- Basler L304kc 3-69 103
- 3-70 Basler L304kc 104
- 4 Configuring the Camera 105
- 4.1.4 Configuration Tool Help 108
- 4.2.1 Inquiry Registers 110
- Product ID Inquiry 111
- Serial Number Inquiry 111
- Camera Version Inquiry 111
- FPGA Firmware Version Inquiry 112
- Camera Status Inquiry 113
- FPGA Status Inquiry 114
- Sensor Temperature Inquiry 115
- Video Data Output Mode CSR 118
- Exposure Time CSR 119
- Configuring the Camera 120
- 4-16 Basler L304kc 120
- Line Period CSR 121
- 4-18 Basler L304kc 122
- Spatial Correction Amount CSR 123
- Red Gain CSR 124
- Green Gain CSR 125
- Blue Gain CSR 125
- Gain Lock CSR 125
- Red Offset CSR 126
- Green Offset CSR 127
- Blue Offset CSR 127
- Offset Lock CSR 128
- Basler L304kc 4-25 129
- Area of Interest Length CSR 130
- Stamp Mode CSR 131
- Stamp Red Low Pixel Limit CSR 132
- Basler L304kc 4-29 133
- 4-30 Basler L304kc 134
- Mirror Image Mode CSR 135
- Shading Mode CSR 136
- Shading Value Generate CSR 136
- Basler L304kc 4-33 137
- Basler L304kc 4-35 139
- Test Image Mode CSR 140
- Camera Reset CSR 140
- Saving a Configuration Set 143
- Configuration Set CSR 148
- Shading Value CSR 149
- 76543210 151
- OpCode BCC 151
- Byte Time-outs 154
- Read Commands 154
- Write Command 154
- 4.3.2.1 Read Command 155
- 4.3.2.2 Write Command 156
- 4-54 Basler L304kc 158
- 5 Mechanical Considerations 159
- Mechanical Considerations 161
- Basler L304kc 5-3 161
- 5.3 Sensor Line Location 162
- Basler L304kc 5-5 163
- 5.5 Heat Sink Dimensions 164
- 6 Troubleshooting 165
- 6.2 Troubleshooting Charts 167
- Troubleshooting 168
- 6-4 Basler L304kc 168
- 6.2.2 Poor Quality Image 169
- 6-6 Basler L304kc 170
- 6.2.3 Interfacing 171
- Revision History 175
- BASLER L304kc 176
- Feedback 177
- Basler L304kc v 179
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