Daheng Imaging MARS USB3 User manual

MARS USB3 Vision Cameras
User Manual
Version: V1.0.1
Date: 2020-03-09
China Daheng Group, Inc. Beijing Image Vision Technology Branch

All rights reserved. No parts of this manual may be used or reproduced, in any forms or by any means,
without prior written permission of China Daheng Group, Inc. Beijing Image Vision Technology Branch.
The right is also reserved to modify or change any parts of this manual in the future without prior notification.
All other trademarks are the properties of their respective owners.
© 2020 China Daheng Group, Inc. Beijing Image Vision Technology Branch
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http://www.daheng-imaging.com/en/
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[email protected]
Sales Tel:
[phone]
Support Email:
[email protected]

Preface
We really appreciate your choosing of DAHENG IMAGING products.
The MARS USB3.0 series camera is DAHENG IMAGING's latest area scan industrial digital camera with
large and high-quality sensor, featuring high resolution, high definition and extremely low noise. The
camera is equipped with standard USB3.0 interface, is easy to install and use.
The MARS family cameras are especially suitable for machine vision applications such as industrial
inspection, medical, scientific research, education, security and so on.
This manual describes in detail on how to install and use the MARS USB3 Vision digital cameras.

© China Daheng Group, Inc. Beijing Image Vision Technology Branch I
Contents
1. Introduction......................................................................................................................1
1.1. Series Introduction .................................................................................................. 1
1.2. Naming Rules.......................................................................................................... 1
1.3. Standards................................................................................................................ 1
1.4. Document, CAD/Technical Drawing and Software Downloads................................ 2
2. Precautions......................................................................................................................3
2.1. Guideline for Avoiding EMI and ESD....................................................................... 3
2.2. Environmental Requirements.................................................................................. 3
2.3. Camera Mechanical Installation Precautions........................................................... 3
3. Installation Guideline ......................................................................................................4
3.1. Host Preparation ..................................................................................................... 4
3.1.1. Software Package............................................................................................................. 4
3.1.2. User Software Interface .................................................................................................... 4
3.2. Camera Power ........................................................................................................ 5
3.3. Camera Driver Installation....................................................................................... 6
3.3.1. System Requirements....................................................................................................... 6
3.3.2. Driver Installation .............................................................................................................. 6
3.4. Open Device and Start Acquisition.......................................................................... 6
4. General Specification......................................................................................................7
4.1. Explanation of Important Parameters...................................................................... 7
4.1.1. About Spectral Response.................................................................................................. 7
4.2. MARS-1230-23U3M/C ............................................................................................ 7
4.2.1. Parameter......................................................................................................................... 7
4.2.2. Spectral Response.......................................................................................................... 10
4.3. MARS-1231-32U3M/C .......................................................................................... 10
4.3.1. Parameter....................................................................................................................... 10
4.3.2. Spectral Response.......................................................................................................... 13
5. Dimensions....................................................................................................................15
5.1. Camera Dimensions.............................................................................................. 15
5.2. Optical Interface.................................................................................................... 15
5.3. Tripod Adapter Dimensions ................................................................................... 16
6. Filters and Lenses.........................................................................................................18
6.1. Filters .................................................................................................................... 18

© China Daheng Group, Inc. Beijing Image Vision Technology Branch II
6.2. Lens Selection Reference ..................................................................................... 19
6.2.1. HN-2M Series ................................................................................................................. 20
6.2.2. HN-5M Series ................................................................................................................. 20
7. Electrical Interface.........................................................................................................22
7.1. LED Light............................................................................................................... 22
7.2. USB Port ............................................................................................................... 22
7.3. I/O Port.................................................................................................................. 22
7.3.1. Line0 (Opto-isolated Input) Circuit .................................................................................. 23
7.3.2. Line1 (Opto-isolated Output) Circuit................................................................................ 25
7.3.3. GPIO 2/3 (Bidirectional) Circuit....................................................................................... 27
7.3.3.1. Line2/3 is Configured as Input.................................................................................. 27
7.3.3.2. Line2/3 is Configured as Output............................................................................... 29
8. Features..........................................................................................................................32
8.1. I/O Control............................................................................................................. 32
8.1.1. Input Mode Operation ..................................................................................................... 32
8.1.2. Output Mode Operation................................................................................................... 33
8.1.3. Read the LineStatus........................................................................................................ 37
8.2. Image Acquisition Control...................................................................................... 37
8.2.1. Acquisition Start and Stop............................................................................................... 37
8.2.1.1. Acquisition Start........................................................................................................ 37
8.2.1.2. Acquisition Stop........................................................................................................ 38
8.2.2. Acquisition Mode............................................................................................................. 39
8.2.3. Trigger Type Selection .................................................................................................... 40
8.2.4. Switching Trigger Mode................................................................................................... 42
8.2.5. Continuous Mode and Configuration............................................................................... 43
8.2.6. Software Trigger Acquisition and Configuration .............................................................. 43
8.2.7. External Trigger Acquisition and Configuration ............................................................... 44
8.2.8. Set Exposure .................................................................................................................. 46
8.2.9. Overlapping Exposure and Non-overlapping Exposure .................................................. 48
8.3. Basic Features ...................................................................................................... 50
8.3.1. Gain ................................................................................................................................ 50
8.3.2. Pixel Format.................................................................................................................... 51
8.3.3. ROI.................................................................................................................................. 54
8.3.4. Auto Exposure/Auto Gain................................................................................................ 55
8.3.4.1. ROI Setting of Auto Exposure/ Auto Gain................................................................. 55
8.3.4.2. Auto Gain.................................................................................................................. 56
8.3.4.3. Auto Exposure.......................................................................................................... 57
8.3.5. Auto White Balance......................................................................................................... 57
8.3.5.1. Auto White Balance ROI........................................................................................... 57
8.3.5.2. Auto White Balance Adjustment................................................................................ 58

© China Daheng Group, Inc. Beijing Image Vision Technology Branch III
8.3.6. Lookup Table................................................................................................................... 59
8.3.7. Test Pattern..................................................................................................................... 60
8.3.8. User Set Control ............................................................................................................. 61
8.3.9. Device User ID................................................................................................................ 64
8.3.10. Timestamp .................................................................................................................... 64
8.3.11. Binning.......................................................................................................................... 64
8.3.12. Decimation.................................................................................................................... 67
8.3.13. Reverse X and Reverse Y............................................................................................. 69
8.3.14. Digital Shift.................................................................................................................... 70
8.3.15. Acquisition Status.......................................................................................................... 72
8.3.16. Black Level.................................................................................................................... 72
8.3.17. Remove Parameter Limits............................................................................................. 73
8.3.18. User Data Area ............................................................................................................. 74
8.3.19. Timer............................................................................................................................. 74
8.3.20. Counter......................................................................................................................... 75
8.4. Image Processing.................................................................................................. 76
8.4.1. Color Transformation Control.......................................................................................... 76
8.4.2. Gamma........................................................................................................................... 78
8.4.3. Sharpness....................................................................................................................... 79
8.4.4. Lookup Table................................................................................................................... 80
8.4.5. Defect Pixel Correction ................................................................................................... 81
8.5. Image Transmission.............................................................................................. 81
8.5.1. Calculate Frame Rate..................................................................................................... 81
8.5.2. USB Interface Bandwidth................................................................................................ 82
8.5.3. DeviceLinkThroughputLimit............................................................................................. 82
8.5.4. Camera Acquisition Time ................................................................................................ 83
8.6. Events ................................................................................................................... 83
8.6.1. ExposureEnd Event ........................................................................................................ 85
8.6.2. BlockDiscard Event......................................................................................................... 85
8.6.3. BlockNotEmpty Event ..................................................................................................... 85
8.6.4. FrameStartOvertrigger Event.......................................................................................... 85
8.6.5. FrameBurstStartOvertrigger Event.................................................................................. 85
8.6.6. FrameStartWait Event..................................................................................................... 85
8.6.7. FrameBurstStartWait Event............................................................................................. 85
9. Software Tool.................................................................................................................86
9.1. LUT Create Tool .................................................................................................... 86
9.1.1. GUI.................................................................................................................................. 86
9.1.2. User Guide...................................................................................................................... 87
9.1.2.1. User Case ................................................................................................................ 87
9.1.2.2. GroupBox ................................................................................................................. 87

© China Daheng Group, Inc. Beijing Image Vision Technology Branch IV
9.1.2.3. Auto Create Lut......................................................................................................... 91
9.1.2.4. Save Lut................................................................................................................... 92
9.1.3. Precautions..................................................................................................................... 92
9.1.3.1. Read From Device.................................................................................................... 92
9.1.3.2. Write To Device ........................................................................................................ 93
9.1.3.3. Directory Structure.................................................................................................... 93
9.2. Frame Rate Calculation Tool................................................................................. 93
10. FAQ...............................................................................................................................95
11. Revision History ..........................................................................................................97
12. Contact Us....................................................................................................................98
12.1. Contact Sales...................................................................................................... 98
12.2. Contact Support .................................................................................................. 99

1.Introduction
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 1
1. Introduction
1.1. Series Introduction
The MARS USB3 Vision series camera is DAHENG IMAGING's mature area scan industrial digital camera,
featuring outstanding performance, powerful features, outstanding price/performance ratio. The MARS-U3
series cameras are available in a variety of resolutions and frame rates, and are available with CMOS
sensors from leading chip manufacturers, which is easy to install and use.
The MARS-U3 series digital camera transmits image data through the USB3.0 data interface. Thanks to
the locking screw connectors, the MARS series cameras can secure the reliability of cameras deployed in
harsh industrial environments. Featuring high reliability and high price/performance ratio, the MARS series
cameras are especially suitable for machine vision applications such as industrial inspection, medical,
scientific research, education, security and so on.
1.2. Naming Rules
Details of the MARS USB3 Vision series (MARS-U3) camera are given in the general specifications below.
Each camera model name is determined by its sensor's maximum resolution, maximum frame rate at
maximum resolution, the color/monochrome type of the sensor, etc.
Figure 1-1 Naming rules
1.3. Standards
The camera follows the USB3 Vision1.0 standard, and its development interface GalaxySDK is
implemented based on the GEN<i>CAM standard.

1.Introduction
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 2
1.4. Document, CAD/Technical Drawing and Software Downloads
Product related document, CAD/Technical drawing and software can be downloaded from the Downloads
of DAHENG IMAGING website. The relevant contents are as follows:
Document
MARS USB3 Vision Cameras User Manual
CAD/Technical Drawing
DAHENG IMAGING MARS-U3 CAD/Technical Drawing
Software
Galaxy Windows SDK—USB3.0, GigE, MERCURY USB2.0 Cameras
Galaxy Linux SDK—USB3.0, GigE, MERCURY USB2.0 Cameras
Galaxy Android SDK—USB3.0 Cameras

2.Precautions
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 3
2. Precautions
2.1. Guideline for Avoiding EMI and ESD
You should consider the EMI (Electro Magnetic Interference) and ESD (Electro-Static discharge) problem
in the process of using the camera, to guarantee the camera to work in a relatively good electromagnetic
environment. The main measures are as follows:
1) USB cables certificated by USB IF with lock screw are recommended.
2) Using shielded cable can avoid electro-magnetic interface. Shielding layer of the cable should conduct
to ground nearby and not until stretched too long. When many devices need conduct to ground, using
single point grounding to avoid earth loop.
3) Keep your cameras away from equipment with high voltage, or high current (such as motor, inverter,
relay, etc.). If necessary, use additional shielding.
4) ESD (electro-static discharge) may damage cameras permanently, so use suitable clothing (cotton)
and shoes, and touch the metal to discharge the electro-static before operating cameras.
2.2. Environmental Requirements
1) Housing temperature during operation: 0°C ~ 45°C, humidity during operation: 10% ~ 80%.
Storage temperature: -20°C ~ 70°C.
2) To avoid collecting dust in the optical filter, always keep the plastic cap on cameras when no lens is
mounted.
3) PC requirement: Intel Core 2 Duo, 2.4GHz or above, and 2GB memory or above.
4) USB3.0 host controller requirement: Intel controller integrated in mainboard is recommend. Select
Renesas controller if external frame grabber is needed.
5) The cable must have a locking screw at the end of the device.
6) Make sure that cameras are transported in the original factory packages.
2.3. Camera Mechanical Installation Precautions
Camera installation requirements:
1) The screw and camera have a screw length between 3 and 4.8 mm.
2) Screw assembly torque ≤1.8N.M. If the screw assembly torque is too large, it may cause the camera
thread stripping.