Basler A202k User's Manual Supplement

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. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may ...

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I DRAFT Table of Contents 1 Purpose of This Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Gain Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1 Larger Gain Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 Left Side Gain and Right Sid ...

1 DRAFT 1 Purpose of This Document The Basler A202k High Gain camera is a variant of the standard Basler A202k camera. The purpose of this document is to describe the unique aspects of A202k High Gain cameras. The unique aspects of A202k High Gain camera are listed below. • As the name implies, A202k High Gain cameras have a higher available gain range than standard A202k cameras. The gain range and the gain related bina ...

DRAFT 2 Document Applicability This user’s manual supplement applies to A202k High Gain cameras with a camera version ID number of 02. High gain cameras with a lower or a higher ID number may have fewer features or have more features than described in this supplement. Features on cameras with a lower or a higher ID number may not operate exactly as described in this supplement. An easy way to see the camera version ID ...

3 DRAFT 3 Gain Changes 3.1 Larger Gain Range The major difference between the standard camera and the high gain version is the gain range. On standard cameras, the gain can be programmed on a decimal scale that ranges from 288 to 569 (0x0120 to 0x0239). At the highest gain setting on a standard camera, the gain will be 12 dB. On the high gain version, gain can be programmed on a decimal scale that ranges from 288 to 1023 ( ...

DRAFT 3.2 Left Side Gain and Right Side Gain Binary Commands On high gain cameras, the data range for the left side gain and the right side gain binary commands is larger than on standard cameras. The larger range is shown in the tables below. Left Side Gain Right Side Gain Purpose: To set the gain for the left side of the CCD array or to read the current left side gain setting. Type: This is a read or write command. Rea ...

5 DRAFT 4 Digital Shift Changes 4.1 Additional Digital Shift Setting Available On standard cameras, the digital shift feature has “shift once” and “shift twice” settings available. On high gain cameras, a “shift three times” setting has been added. The description of the digital shift feature that appears below includes the additional setting. Digital Shift On High Gain Cameras The “digital shift” feature l ...

DRAFT Shift Twice When the camera is set to shift twice, the output from the camera will include bit 7 through bit 0 from each ADC along with two zeros as LSBs. The result of shifting twice is that the output of the camera is effectively multiplied by four. For example, assume that the camera is set for no shift, that it is viewing a uniform white target, and that under these conditions the reading for the brightest pixe ...

7 DRAFT 4.1.2 Digital Shift With 8 Bit Output No Shift The A202k High Gain camera uses 10 bit ADCs to digitize the output from the CCD sensor. When the camera is operating in 8 bit output mode with no digital shift, it drops the least two significant bits from each ADC and transmits the 8 most significant bits (bit 9 through bit 2). Shift Once When the camera is set to shift once, the output from the camera will include bi ...

DRAFT Shift Twice When the camera is set to shift twice, the output from the camera will include bit 7 through bit 0 from each ADC. The result of shifting twice is that the output of the camera is effectively multiplied by four. For example, assume that the camera is set for no shift, that it is viewing a uniform white target, and that under these conditions the reading for the brightest pixel is 20. If you changed the d ...

9 DRAFT 4.1.3 Precautions When Using Digital Shift There are several checks and precautions that you must follow before using the digital shift feature on high gain cameras. The checks and precautions differ depending on whether you will be using the camera in 10 bit output mode or in 8 bit output mode. If you will be using the camera in 10 bit output mode, make this check: 1. Use binary commands or the Video Data Output M ...

DRAFT 4.2 Digital Shift Binary Command On high gain cameras, a “shift three times” setting has been added to the data formats for the digital shift binary command. The additional setting is shown in the table below. Purpose: To enable or disable digital shift. Type: This is a read or write command. Read Command: Cmd-ID R/W-Flag Data Length Data 0xA5 1 1 - Response: Cmd-ID R/W-Flag Data Length Data 0xA5 0 1 1 Byte Wr ...

11 DRAFT 5 Pixel Clock, Timing Chart, and Frame Rate Formula Changes A202k High Gain cameras use a 36 MHz pixel clock rather than the 40 MHz clock used on standard cameras. This means that the pixel timings and the formulas for calculating the maximum allowed frame rate are different on high gain cameras. Figure 2 shows the pixel timing chart when a high gain camera is operating with level controlled exposure. Figure 3 sho ...

DRAFT [1] The line valid low time is 8.8 µs except as described in note 2 below. [2] In the level controlled exposure mode, the fall of ExSync starts exposure. If ExSync falls while a frame is being transferred (while frame valid is high), one line valid low time immediately following the fall of ExSync will be 17.1 µs. [3] The diagram assumes that the area of interest (AOI) feature is not being used. With the AOI fea ...

13 DRAFT Figure 3: Dual 10 Bit or Dual 8 Bit Output Mode with Programmable Exposure [1] The line valid low time is 8.8 µs except as described in note 2 below. [2] In the programmable exposure mode, the rise of ExSync starts exposure. If ExSync rises while a frame is being transferred (while frame valid is high), one line valid low time immediately following the fall of ExSync will be 17.1 µs. [3] The diagram assumes that ...

DRAFT 5.1 Calculating the Maximum Allowed Frame Rate Based on the AOI Size When the area of interest feature is used, the camera’s maximum allowed frame rate increases. The amount that the maximum frame rate increases depends on the number of lines included in the area of interest. The smaller the number of lines in the area of interest, the higher the maximum frame rate. The maximum allowed frame rate for A202k High ...