Daheng Imaging VENUS USB3 Series User manual

VENUS USB3 Vision Cameras
User Manual
Version: V1.0.0
Date: 2020-09-14
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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Preface
We really appreciate your choosing of DAHENG IMAGING products.
The VENUS USB3.0 series camera is DAHENG IMAGING's latest board level 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 VENUS 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 VENUS 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. VEN-161-61U3M-(M01/M05/M06)........................................................................... 7
4.2.1. Parameter ............................................................................................................................7
4.2.2. Spectral Response ..............................................................................................................9
5. Dimensions ....................................................................................................................10
5.1. Camera Dimensions.............................................................................................. 10
5.2. Optical Interface .....................................................................................................11
6. Filters and Lenses .........................................................................................................13
6.1. Filters .................................................................................................................... 13
6.2. Lens Selection Reference ..................................................................................... 14
7. Electrical Interface.........................................................................................................16
7.1. LED Light............................................................................................................... 16
7.2. USB Port ............................................................................................................... 16
7.3. I/O Port.................................................................................................................. 16
7.3.1. VEN-U3 Series ..................................................................................................................16

© China Daheng Group, Inc. Beijing Image Vision Technology Branch II
7.3.1.1. Line0 (Opto-isolated Input) Circuit..............................................................................17
7.3.1.2. Line2 (Bidirectional) Circuit......................................................................................... 19
7.3.1.2.1. Line2 is Configured as Input ................................................................................19
7.3.1.2.2. Line2 is Configured as Output ............................................................................. 21
8. Features..........................................................................................................................24
8.1. I/O Control ............................................................................................................. 24
8.1.1. VEN-U3 Series ..................................................................................................................24
8.1.1.1. Input Mode Operation .................................................................................................24
8.1.1.2. Output Mode Operation ..............................................................................................25
8.1.1.3. Read the LineStatus ...................................................................................................27
8.2. Image Acquisition Control...................................................................................... 27
8.2.1. Acquisition Start and Stop .................................................................................................27
8.2.1.1. Acquisition Start ..........................................................................................................27
8.2.1.2. Acquisition Stop .......................................................................................................... 28
8.2.2. Acquisition Mode ...............................................................................................................29
8.2.3. Switching Trigger Mode.....................................................................................................30
8.2.4. Continuous Mode and Configuration.................................................................................31
8.2.5. Software Trigger Acquisition and Configuration ................................................................31
8.2.6. External Trigger Acquisition and Configuration .................................................................32
8.2.7. Set Exposure ..................................................................................................................... 33
8.2.7.1. Set Exposure Mode .................................................................................................... 33
8.2.7.2. Set Exposure Value ....................................................................................................34
8.2.8. Overlapping Exposure .......................................................................................................36
8.3. Basic Features ...................................................................................................... 37
8.3.1. Gain ................................................................................................................................... 37
8.3.2. Pixel Format.......................................................................................................................37
8.3.3. ROI..................................................................................................................................... 40
8.3.4. Auto Exposure/Auto Gain .................................................................................................. 41
8.3.5. Test Pattern........................................................................................................................43
8.3.6. User Set Control ................................................................................................................43
8.3.7. Device User ID ..................................................................................................................45
8.3.8. Reverse X and Reverse Y.................................................................................................46
8.3.9. User Data Area ..................................................................................................................48
8.4. Image Transmission .............................................................................................. 48
8.4.1. Calculate Frame Rate........................................................................................................ 48
8.4.2. USB Interface Bandwidth ..................................................................................................49
8.4.3. DeviceLinkThroughputLimit...............................................................................................49
8.4.4. Camera Acquisition Time...................................................................................................50
9. Software Tool .................................................................................................................51
9.1. LUT Create Tool .................................................................................................... 51
9.1.1. GUI..................................................................................................................................... 51
9.1.2. User Guide.........................................................................................................................52

© China Daheng Group, Inc. Beijing Image Vision Technology Branch III
9.1.2.1. User Case ...................................................................................................................52
9.1.2.2. GroupBox....................................................................................................................52
9.1.2.3. Auto Create Lut...........................................................................................................56
9.1.2.4. Save Lut......................................................................................................................57
9.1.3. Precautions........................................................................................................................57
9.1.3.1. Read From Device......................................................................................................57
9.1.3.2. Write To Device...........................................................................................................58
9.1.3.3. Directory Structure......................................................................................................58
9.2. Frame Rate Calculation Tool ................................................................................. 58
10. FAQ ...............................................................................................................................60
11. Revision History ..........................................................................................................62
12. Contact Us....................................................................................................................63
12.1. Contact Sales ...................................................................................................... 63
12.2. Contact Support .................................................................................................. 64

1.Introduction
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 1
1. Introduction
1.1. Series Introduction
The VENUS USB3 Vision series camera is DAHENG IMAGING's innovative board level industrial digital
camera, featuring outstanding performance, powerful features, outstanding price/performance ratio. The
VEN-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 VEN-U3 series digital camera transmits image data through the USB3.0 data interface. Thanks to the
locking screw connectors, the VENUS series cameras can secure the reliability of cameras deployed in
harsh industrial environments. Featuring high reliability and high price/performance ratio, the VENUS
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 VENUS USB3 Vision series camera is 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
VENUS USB3 Vision Cameras User Manual
CAD/Technical Drawing
DAHENG IMAGING VEN-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 M3 screw and the camera should have a screw length between 2.5 and 2.7mm, and the M2 screw
and the camera should have a screw length between 3 and 3.3mm
2) The M3 screw assembly torque ≤ 1N.M, and the M2 screw assembly torque ≤ 0.5N.M. If the screw
assembly torque is too large, it may cause the camera thread stripping.

3.Installation Guideline
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 4
3. Installation Guideline
3.1. Host Preparation
3.1.1. Software Package
The software package of DAHENG IMAGING's MERCURY2 series is used to control the MERCURY2 and
VENUS series camera to provide stable, real-time image transmission, and provides multiple samples and
easy-to-integrate SDKs for various programming tools. The package is composed of the following modules:
1) Driver Package (Driver): This package provides the VENUS series camera driver program, such as:
the USB3.0 cameras' driver program.
2) Interface Library (API): This package provides the camera control interface library and the image
processing interface library, supports the user for secondary development.
3) Demonstration Program (GalaxyView.exe): This demonstration program is used to display the camera
control, image acquisition and image processing functions, the user can control the camera directly
by the demonstration program, and the user can develop their own control program based on the
camera interface library.
4) Sample: These samples demonstrate cameras' functions, the user can easily use these samples to
control cameras, or refer to the samples to develop their own control programs.
5) Programmer's Manual: This manual is the users programming guide that instructs the users how to
configure the programming environment and how to control cameras and acquire images through the
camera interface library.
You can download the latest software package from the website: www.daheng-
imaging.com/en/Downloads.
3.1.2. User Software Interface
After installing the MERCURY2 series camera software package, the user can use the demonstration
program and the samples to control the camera, also the user can control the camera by the program
which is written by the user themselves. The software package provides three kinds of program interface,
the user can select the suitable one for use according to their own requirements:
1) API Interface
In order to simplify the users' programming complexity, the package provides the general C programming
interface GxIAPI.dll and image processing algorithm interface DxImageProc.dll for the user to control the
camera, and provides the samples and software development manual which are based on these interfaces.
The API interface supports C/C++/C#/Python, etc.
2) GenTL Interface
This interface is developed according to the standard of general transport layer in GEN<i>CAM standard,
DAHENG IMAGING follows the GEN<i>CAM standard and provides the GenTL interface for the user, the
user can use the GenTL interface directly to develop their own control program.