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CoaXPress Camera for High-Speed Machine Vision

CoaXPress Industrial Camera for High-Speed Image Transmission
MindVision CoaXPress cameras are designed for high-speed machine vision systems that require fast image transmission, high resolution, low latency and stable data transfer. CoaXPress camera solutions are suitable for demanding industrial inspection, semiconductor inspection, high-speed production lines, scientific imaging and precision measurement applications.
Compared with common industrial camera interfaces, CoaXPress industrial cameras are often selected for applications that need higher bandwidth, faster frame rates and reliable long-distance transmission. With CXP interface technology, engineers can build high-performance machine vision systems for complex inspection tasks and high-resolution image acquisition.
MindVision's CoaXPress industrial cameras are specifically optimized for high-speed imaging applications, incorporating advanced image sensors and signal processing technologies to perfectly meet the demands of various challenging industrial automation and professional vision scenarios. Featuring high-performance CoaXPress digital interface technology, these cameras support ultra-high-speed data transfer rates of up to 12.5Gbps, enabling real-time, stable processing of high-resolution, high-speed vision data while ensuring precision and reliability in image acquisition. Thanks to their outstanding performance, MindVision's CoaXPress camera series has become the preferred solution for high-end machine vision applications such as industrial inspection, intelligent transportation, and semiconductor manufacturing. In the medical imaging field, their exceptional image quality and transmission stability have also gained widespread recognition, meeting the specialized requirements of professional medical applications like endoscopy imaging and surgical navigation. Whether capturing fast-moving targets with precision or maintaining stable imaging in complex environments, this series delivers professional-grade vision solutions.

Choose CoaXPress Camera Models by Resolution, Speed and Application

Compare MindVision CoaXPress camera models by resolution, frame rate, sensor type, interface version, camera type, transmission distance and application requirements. Engineers can choose a suitable CXP camera according to image detail, production line speed, inspection accuracy, field of view and machine vision system architecture.

Advantages of CoaXPress Cameras in Industrial Inspection

High Bandwidth for High-Resolution Imaging

CoaXPress cameras provide high-bandwidth image transmission for machine vision systems that need to capture large amounts of image data quickly. This makes CXP cameras suitable for high-resolution inspection, fast production lines and applications requiring detailed image analysis.

Low Latency for Real-Time Machine Vision

Low-latency transmission helps CoaXPress industrial cameras support real-time image acquisition and fast processing. This is important for defect detection, alignment, measurement and high-speed inspection systems where response time directly affects production efficiency.

Stable Transmission for Demanding Vision Systems

CoaXPress camera systems are designed for stable and reliable data transfer in demanding industrial environments. They can support machine vision projects that require continuous image acquisition, consistent frame rates and reliable long-term operation.

Suitable for Line Scan and Area Scan Applications

CoaXPress cameras can be used in both line scan and area scan machine vision systems. CoaXPress line scan cameras are suitable for continuous material inspection and high-speed production lines, while CoaXPress area scan cameras can support high-resolution image capture for precision inspection.

The Evolution of CoaXPress Speeds

The first version of the CoaXPress standard was CXP-6. It supported a speed of 6.25 Gbps over one coaxial cable. Due to the use of 8B/10B encoding, the actual effective bandwidth was 5.0 Gbps.


The CoaXPress 2.0 version increased the maximum speed to CXP-12. It can now reach 12.5 Gbps using one coaxial cable. Similarly, employing 8B/10B encoding results in an actual effective bandwidth of 10.0 Gbps.

Standards and Rates: CXP is a high-speed point-to-point serial communication digital interface standard. Under the 2.0 standard, single-channel bit rates vary by level, such as CXP-1 at 1.250 Gbps, CXP-2 at 2.500 Gbps, CXP-3 at 3.125 Gbps, CXP-5 at 5.000 Gbps, CXP-6 at 6.250 Gbps, CXP-10 at 10.000 Gbps, and CXP-12 at 12.500 Gbps. Bandwidth can also be increased through multi-channel aggregation. For example, four cables can provide a maximum data rate of 50 Gbps. Transmission Characteristics: CXP offers high bandwidth and low latency, supporting transmission over coaxial cables across certain distances (e.g., up to 100 m at 3.125 Gbps and approximately 35 m at 12.5 Gbps). Some versions also support "Power-over-Coax" (using the cable to power the camera). A single cable can extend up to 100 m, meeting the demands of industrial applications for high-speed, stable image data transmission. It is commonly used in ultra-high-speed imaging (e.g., 3D scanning, medical imaging) and large-resolution sensor applications.
CXPoF uses optical fiber as the transmission medium, and its bandwidth entirely depends on the speed of the optical module. Currently, commonly used optical module bandwidths are as follows:
This table focuses on fiber optic communication scenarios, presenting the corresponding relationships between different optical module types and the maximum operational bit rate per fiber: The SFP+ optical module is suitable for 10Gbps, and is often used in enterprise campus networks and other scenarios to balance costs and 10G transmission; QSFP+ corresponds to 40Gbps, and is mostly applied in scenarios such as data center server interconnections that require high density and high bandwidth; QSFP28 matches 100Gbps and is the mainstream choice for 100G Ethernet in data centers and the like; QSFP56 corresponds to 200Gbps and targets scenarios with extreme bandwidth demands, such as in ultra - large - scale data centers. These corresponding relationships provide key references for equipment selection and network design in fiber optic communication systems, covering the evolution from basic 10G bearer to high - speed 200G.

Implementation of CoaxPress over Fiber

CoaXPress over Fiber (CXPoF) is an extended protocol of the CoaXPress protocol. It allows the CoaXPress protocol to operate on the standard Ethernet physical layer. A CXP - PHY Bridge connects the camera (Device) and the frame grabber (Host). It links the CXP protocol to the Ethernet physical layer (Ethernet PHY).


In systems that use QSFP+/QSFP28/QSFP56 optical modules, each module has 4 sets of TX (Transmit) and RX (Receive) transceivers. For the camera side (Device), CXPoF uses 4 pairs of TX and 1 pair of RX. For the frame grabber side (Host), CXPoF uses 4 pairs of RX and 1 pair of TX.

This diagram presents the architecture of an Ethernet data transmission link based on the CXP interface in an FPGA system, showing the data interaction process between the "FPGA Device (device side)" and the "FPGA Host (host side)". The CXP module initiates and responds to protocol communication. The CXP - PHY Bridge converts the protocol format and connects to the Ethernet PHY via nGMII to process physical - layer signals. The PMD is associated with the optical fiber to complete photoelectric conversion and adaptation. Relying on the optical fiber as the physical medium, a "protocol conversion + physical - layer adaptation + medium transmission" path is built to achieve high - speed data transmission between the two ends, and it is suitable for FPGA interconnection scenarios with requirements for bandwidth and transmission distance.
This design allows fast and reliable data transfer between the FPGA and the host using optical fibers. It is a common setup for modern high-speed communication systems.
This is a diagram of the high - speed Ethernet communication architecture based on optical fibers between an FPGA (Field - Programmable Gate Array) device and a host. It shows the signal processing and transmission link of the Physical Layer, with the core revolving around the PCS/PMA sub - layers, the PMD sub - layer, and the optical fiber medium. The PCS/PMA (Physical Coding Sublayer / Physical Medium Attachment) includes the PCS/FEC, where the PCS is responsible for encoding/decoding Ethernet data (such as 8b/10b, 64b/66b encoding, etc.) to adapt the data to high - speed serial transmission, and FEC (Forward Error Correction), an optional function that realizes automatic detection and correction of transmission errors by adding redundant check codes to improve link reliability; the PMA connects the PCS and the PMD, processes analog signals (such as signal amplification, clock recovery, serialization/deserialization, etc.), and converts the digital encoded signals output by the PCS into analog electrical/optical signals suitable for PMD transmission (or vice - versa), serving as a "bridge" between the digital domain and the physical medium. The PMD (Physical Medium Dependent) is directly associated with the optical fiber physical medium and realizes "electrical - optical"/"optical - electrical" conversion: the transmitting end converts the electrical signal from the PMA into an optical signal and injects it into the optical fiber; the receiving end restores the optical signal from the optical fiber into an electrical signal and sends it back to the PMA, acting as an "interface" for signals to enter/leave the physical medium. The Fibers, as the physical transmission medium, rely on optical signals to achieve high - speed and long - distance data transmission between the FPGA Device (device side) and the FPGA Host (host side), serving as the "physical channel" of the link. The overall process is that data enters the PCS/FEC inside the FPGA to complete encoding (and optional FEC processing), is converted by the PMA into a signal suitable for the PMD, and then converted by the PMD into an optical signal and injected into the optical fiber; the receiving end performs the reverse operation, where the optical signal is converted by the PMD into an electrical signal, processed by the PMA, and then sent to the PCS/FEC for decoding to restore the original data. This architecture is often used in scenarios with high requirements for bandwidth and reliability, such as high - speed Ethernet (e.g., 10G/25G/100G, etc.), data center interconnection, and high - speed test and measurement, reflecting the complete link design of the Ethernet physical layer from "digital encoding - analog processing - optical transmission".
In the CoaXPress system, a QSFP+/QSFP28/QSFP56 optical module can achieve a high-speed upstream channel, along with one main channel and three extended channels. In the traditional CXP electrical interface scheme, as the high-speed upstream channel increases additional costs, almost no manufacturers adopt it. However, in the CXPoF scheme, using the high-speed upstream channel does not incur any extra costs.
This is a diagram of the high - speed interconnection architecture of an FPGA system, showing the signal transmission link between the FPGA Device (device side) and the FPGA Host (host side) connected by optical fibers and based on the CXP high - speed interface protocol. The signal, from the Device to the Host or in the reverse direction, sequentially passes through the CXP - PHY Bridge (protocol adaptation), PCS/PMA (including FEC forward error correction, handling encoding, etc.), and PMD (the optical module realizes electrical - optical/optical - electrical conversion). High - speed and long - distance transmission and interaction are achieved by means of optical fibers. It is suitable for ultra - high - speed and long - distance interconnection scenarios such as data centers, industrial control, and high - performance computing, ensuring high bandwidth, low latency, and reliability, and presenting a complete link of "encoding → conversion → transmission → recovery → decoding".

CoaXPress Camera Applications

High-Speed Industrial Inspection

CoaXPress cameras can be used for high-speed industrial inspection, surface defect detection, product appearance inspection, quality control and continuous production line monitoring. They help capture high-resolution images at fast speeds for demanding inspection tasks.

Semiconductor Inspection

In semiconductor manufacturing, CoaXPress industrial cameras can support wafer inspection, chip inspection, lithography-related inspection, tiny defect detection and high-precision visual inspection where high resolution and high bandwidth are required.
Web, Film and Material Inspection
CoaXPress line scan cameras are suitable for continuous inspection of web materials, films, metal sheets, glass, textiles, paper, printing surfaces and other moving materials on high-speed production lines.
Scientific and Research Imaging
For scientific research, high-speed motion analysis and high-resolution imaging systems, CXP cameras can provide fast image acquisition and stable data transfer for applications with strict requirements for speed and image detail.
In summary, due to their superior technical performance and wide range of application fields, CXP cameras have become important tools in many high-demand industries. With the further development of technology in the future, CXP cameras will surely play a greater role in more fields. The development of CMOS sensors has driven the advancement of camera technology, and the high-bandwidth characteristics of CXP cameras meet this demand, facilitating the implementation and development of various high-information applications.

CoaXPress Camera vs GigE Camera and USB3 Camera

CoaXPress camera, GigE camera and USB3 camera are common industrial camera interface options. USB3 cameras are often used for compact short-distance machine vision systems, GigE cameras are suitable for long-distance Ethernet transmission, while CoaXPress cameras are selected for high-speed, high-resolution and low-latency image acquisition.
For projects that require extremely fast image transfer, high frame rate, high-resolution sensors or line scan inspection, a CoaXPress industrial camera can be a better choice. For lower bandwidth or simpler installation requirements, engineers can also compare USB3 camera and GigE camera solutions.

Need a CoaXPress Camera for Your Machine Vision Project?

Tell us your inspection object, production line speed, required resolution, frame rate, field of view, working distance, software environment and installation requirements. MindVision can help recommend a suitable CoaXPress camera, frame grabber, lens and lighting solution for your high-speed machine vision project.
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