CoaXPress Cameras: Connectivity, Performance, Integration and Selection

High-Speed CoaXPress Cameras for Machine Vision

CoaXPress cameras are designed for high-speed, high-resolution imaging applications that require deterministic image transfer, precise triggering, and scalable bandwidth. The CoaXPress interface combines high-speed image transmission, camera control, triggering, and optional power over coaxial cable, making it well suited for demanding machine vision, scientific imaging, medical, defense, inspection, and multi-camera applications.

Modern CXP-12 cameras can transmit up to 12.5 Gb/s per CoaXPress link, while multi-link configurations scale the available interface bandwidth by combining two, four, or eight links. A four-link CXP-12 configuration provides up to 50 Gb/s of aggregate interface bandwidth, while an eight-link configuration can provide up to 100 Gb/s. The number of links required depends on the camera architecture, resolution, frame rate, pixel depth, and overall image-data bandwidth.

Selecting the correct CoaXPress camera therefore involves more than resolution and frame rate. Engineers must also consider the required number of CXP links, pixel depth, sensor architecture, triggering requirements, cable distance, frame grabber connectivity, host bandwidth, and downstream image-processing requirements.

Understanding CoaXPress Cameras

CoaXPress, commonly abbreviated CXP, is a point-to-point high-speed imaging interface that transmits data over standard coaxial cable. Often referred to simply as a CoaXPress cable or CXP cable, this single connection provides a high-speed downlink from camera to acquisition hardware together with a lower-speed control uplink, precise triggering, and optional Power over CoaXPress (PoCXP). The standard also supports GenICam-based camera control.

A key advantage of CoaXPress is scalability. A camera may use a single CXP connection or combine multiple links when the sensor produces more image data than one link can carry.

CoaXPress cameras may operate at different link speeds, including CoaXPress-6 cameras (CXP-6 cameras) and CoaXPress-12 cameras (CXP-12 cameras), depending on the camera generation, required bandwidth, and acquisition architecture.

Typical considerations include:

• Camera resolution and frame rate
• Number of CXP links
• CXP link speed
• Monochrome or color operation
• Pixel depth
• Global or rolling shutter
• External triggering and synchronization
• PoCXP requirements
• Cable length
• Area-scan or line-scan architecture
• Frame grabber and host-system bandwidth

Current CoaXPress camera portfolios include both area-scan and line-scan models. For example, commercially available CXP-12 line-scan cameras include 8K and 16K sensors, while area-scan families range from relatively low resolutions to tens or even more than 100 megapixels.

CoaXPress Camera Selection Criteria

The correct CoaXPress camera should be selected according to the complete imaging workload, not interface speed alone.

Resolution and Sensor Format

Higher-resolution sensors capture more spatial detail but generate larger image payloads. The optical format and lens must also be matched to the sensor size and required field of view.

Global vs. Rolling Shutter

Global-shutter cameras expose the complete image simultaneously and are generally preferred for fast-moving objects and precision measurement. Rolling-shutter sensors may provide advantages in resolution, sensitivity, cost, or sensor availability, but motion artifacts must be considered for dynamic scenes.

Frame Rate

Higher frame rates directly increase the required data bandwidth. A camera that can operate at a high nominal frame rate may therefore require multiple CXP-12 links to transmit uncompressed image data at full performance.

Pixel Depth and Image Format

8-, 10-, 12-, or higher-bit pixel formats affect image quality, dynamic range, and data rate. Color cameras may also increase the data volume depending on the transmitted pixel representation.

Link Count

A critical design parameter is whether the camera uses one, two, or four CoaXPress links, while higher-link-count acquisition architectures can scale further when required. The acquisition platform must provide enough compatible CXP connections for the camera configuration.

Triggering and Synchronization

Applications involving multiple cameras, moving objects, metrology, 3D reconstruction, or line-scan acquisition often require deterministic trigger timing and precise synchronization between sensors.

Acquisition and Processing Architecture

The camera is only one part of the data path. The frame grabber, FPGA, PCIe interface, host memory, storage subsystem, GPU, and processing pipeline must be dimensioned for the actual sustained image-data rate.

High-Resolution and High-Speed CoaXPress Cameras

High-resolution CoaXPress cameras are frequently selected because the interface can sustain image rates that would be difficult to handle through lower-bandwidth camera interfaces.

The underlying relationship is straightforward:

Resolution × frame rate × pixel depth × number of cameras = required image-data bandwidth

For example, increasing resolution without changing frame rate increases the amount of data in every frame. Increasing frame rate raises the number of frames transmitted each second. Increasing pixel depth further increases the amount of data per pixel. A multi-camera system multiplies those requirements again.

This is why a camera specification should never be evaluated independently of the acquisition architecture.

Modern CXP-12 cameras span a wide range of possible designs, from compact single-link configurations to multi-link architectures supporting very high resolutions and frame rates. Four-link CXP-12 cameras can provide up to 50 Gb/s of aggregate interface bandwidth, while higher-link-count acquisition architectures can scale to substantially greater total bandwidth.

For high-resolution or high-speed applications, the frame grabber and downstream processing system must sustain the required data flow without introducing frame loss, excessive latency, or host-side processing bottlenecks.

CXP-12 Cameras and Multi-Link CoaXPress Configurations

CXP-12 is the high-speed mode associated with CoaXPress 2.0 and supports up to 12.5 Gb/s per link.

Typical configurations include:

Configuration	Maximum aggregate link bandwidth
1 × CXP-12	12.5 Gb/s
2 × CXP-12	25 Gb/s
4 × CXP-12	50 Gb/s
8 × CXP-12	100 Gb/s

The number of links required depends on the camera’s output architecture and image-data rate.

A one-link CXP-12 camera can simplify cabling for moderate bandwidths, while two- and four-link designs are common in high-resolution and high-frame-rate systems. Higher-link-count acquisition architectures, including eight-link CXP-12 configurations, can scale aggregate interface bandwidth up to 100 Gb/s when required.

CoaXPress also supports cable lengths that vary with link speed. The official CoaXPress technical summary notes operation beyond 100 m at lower CXP speeds and approximately 35 m at 12.5 Gb/s, depending on the quality of the CXP cable and the system implementation.

This makes CXP-12 cameras attractive where engineers need both high bandwidth and more practical camera placement than very short-reach interfaces permit.

Example Applications for CoaXPress Cameras

High-Speed Industrial Inspection

CoaXPress cameras are well suited to inspection systems where objects move rapidly and image acquisition must remain deterministic. High frame rates combined with global-shutter sensors allow detailed images to be captured without sacrificing throughput.

High-Resolution Imaging

Applications such as semiconductor inspection, electronics inspection, aerial imaging, medical imaging, and scientific instrumentation can produce extremely large image streams. CoaXPress provides the bandwidth required to move these images from the camera into the processing system.

Line-Scan Imaging

High-resolution line-scan cameras can generate substantial continuous bandwidth. Commercial CXP-12 line-scan cameras are available at 8K and 16K resolutions with high line rates, making the interface relevant to web inspection, sorting, printing, and surface inspection.

Multi-Camera Vision

CoaXPress supports deterministic triggering and scalable multi-link acquisition, making it suitable for synchronized multi-camera systems used for 3D imaging, multi-view inspection, volumetric capture, and sensor arrays.

Defense, Aerospace and Outdoor Imaging

High-bandwidth image acquisition, deterministic timing, robust coaxial connectivity, and long cable options can make CXP cameras suitable for mission-critical and remote-sensor imaging architectures.

Edge AI and Real-Time Analytics

High-resolution cameras can generate substantially more data than an embedded GPU should process indiscriminately. FPGA preprocessing, ROI selection, Compression, and other data-reduction functions can therefore be useful before AI inference.

Examples of Modern CoaXPress Camera Vendors & Configurations

The current market illustrates how broadly CoaXPress is being used across high-speed area-scan, high-resolution, line-scan, and rugged imaging applications.

Basler offers CXP-12 camera families covering a broad range of resolutions and frame rates, including single-, dual-, and four-link configurations for high-speed machine vision applications.

Allied Vision delivers CoaXPress-12 cameras using up to four parallel CXP-12 links, supporting aggregate interface bandwidth of up to 50 Gb/s for demanding high-speed and high-resolution imaging applications.

OMRON SENTECH provides CoaXPress cameras for both area-scan and line-scan imaging, including high-resolution 8K and 16K line-scan configurations.

KAYA Instruments supports industrial imaging applications with CoaXPress cameras that leverage CXP-12 interfaces to deliver high resolutions and frame rates for machine vision, defense, and high-speed outdoor imaging.

The important system-design question is therefore not simply whether a camera uses CoaXPress, but how many links it requires, at what speed, and how much sustained image data the complete acquisition and processing pipeline must handle.

CoaXPress Acquisition Platforms and FPGA Processing

Once the camera requirements are defined, the next step is selecting an acquisition and processing architecture that can support the required CXP link count, bandwidth, synchronization, and real-time image-processing needs. Gidel provides PCIe CoaXPress frame grabbers and compact Edge AI systems for CoaXPress camera acquisition, with options for inline FPGA processing and scalable multi-camera synchronization.

PCIe Frame Grabbers for CoaXPress Cameras

High-speed CoaXPress cameras require acquisition hardware that matches the camera’s CXP link count, link speed, synchronization requirements, and sustained data rate.

A CoaXPress frame grabber receives image data from the camera, handles camera control and synchronization, buffers the acquisition stream where required, and transfers the image data into the host computer through PCIe.

Gidel’s portfolio of PCIe CoaXPress frame grabbers supports a range of camera configurations:

• HawkEye-CXP12: up to 4 × CoaXPress-12 links with PoCXP in a compact design, with an optional low-profile form factor
• Proc10A-CXP: up to 8 × CoaXPress-6 links with PoCXP
• Proc1C10N-CXP12: up to 8 × CoaXPress-12 links with PoCXP

Gidel’s CoaXPress frame-grabber family supports optional inline FPGA processing directly in the acquisition path for both CoaXPress-6 (CXP-6) and CoaXPress-12 (CXP-12) configurations.

Edge AI Systems with CoaXPress Frame Grabbers

Applications that benefit from a compact embedded architecture can use an integrated Edge AI system instead of a conventional host computer with a PCIe frame grabber.

Gidel’s FantoVision40-CXP12 combines an NVIDIA Jetson processor, Altera FPGA, and integrated Quad CXP-12 acquisition in a compact system. It supports 4 × CXP-12 links with PoCXP and combines FPGA-based camera acquisition and preprocessing with GPU-based AI and application processing on Jetson.

This creates two distinct architecture options:

Gidel PCIe CoaXPress frame grabber:
Installed in a host computer and provides CoaXPress camera acquisition, optional FPGA processing, and high-speed data transfer through PCIe to the host system for further processing, storage, and application execution.

Gidel Mini Edge AI system with CoaXPress frame grabber:
A complete compact embedded vision system that integrates CoaXPress camera acquisition, FPGA processing, and NVIDIA Jetson CPU/GPU computing in one platform. It is designed for applications that benefit from an integrated Edge AI architecture rather than a separate host computer with a PCIe acquisition card.

For applications requiring both CoaXPress and GigE Vision cameras, the FantoVision40 also combines Quad CXP-12 acquisition with optional 10 GigE Vision support.

Real-Time FPGA Image Processing for CoaXPress Acquisition

High-speed cameras can produce more data than the host application needs in its raw form.

Gidel FPGA-based acquisition platforms can optionally process image data as it is acquired, before host-side processing. Available functions include Compression, Detection, ROI/data reduction, custom FPGA processing, and other real-time image-processing operations.

Processing data directly in the acquisition path can help:

• Reduce host bandwidth and storage requirements
• Lower host CPU/GPU load
• Preserve low-latency operation
• Execute deterministic processing
• Reduce data volume before recording, streaming, or AI inference

This becomes increasingly relevant as CoaXPress-12 cameras scale toward multi-link, multi-camera, and high-resolution configurations.

ISP and Image Enhancement for CoaXPress Cameras

Beyond general FPGA processing, high-speed CoaXPress cameras often require dedicated ISP and image-enhancement functions before display, recording, analysis, or AI inference.

When these functions are not already implemented inside the camera, they can often be implemented in the FPGA acquisition path, reducing the amount of ISP processing that must be handled later by the host CPU or GPU.

Depending on the sensor type and application, common ISP and image-enhancement functions may include debayering, white balance, gain and offset correction, gamma correction, HDR correction, bad-pixel correction, non-uniformity correction, dynamic luminance balancing, and color or luminance optimization.

Gidel acquisition platforms can integrate selected ISP and image-processing functions directly into the FPGA acquisition path. These functions may be based on Gidel’s existing processing capabilities, customer-specific requirements, or custom algorithms developed for the application.

Running ISP functions inline during acquisition can preserve low latency, reduce host processing load, and prepare image data earlier in the pipeline for recording, streaming, visualization, analysis, or AI processing.

This is especially valuable in high-resolution and multi-camera CoaXPress systems, where implementing part of the ISP workload in deterministic FPGA hardware can reduce host CPU/GPU processing requirements, simplify system design, and improve end-to-end efficiency.

Building Your Own ISP with Gidel Platforms

Gidel platforms provide several ways to build and customize an FPGA-based ISP pipeline. Customers can use Gidel’s off-the-shelf image-processing algorithms, integrate their own FPGA algorithms, develop new processing functions using Gidel’s ProcVision Suite, or work with Gidel to develop application-specific algorithms.

These approaches can also be combined within the same processing pipeline, allowing existing Gidel functions, customer-developed IP, and newly developed algorithms to operate together directly in the FPGA acquisition path.

Using ProcVision Suite, experienced FPGA developers can implement and integrate application-specific processing stages such as debayering, gain and offset correction, HDR, image enhancement, ROI handling, Detection, Compression, and other custom processing functions.

This flexibility allows the processing pipeline to be tailored to the camera, sensor, and application requirements while executing deterministically in the FPGA before data reaches the host CPU, GPU, or Jetson processor.

Multi-Camera Synchronization and Scalable Acquisition

Multi-camera CoaXPress systems require more than sufficient aggregate bandwidth. Frames must also be acquired with deterministic timing and controlled synchronization.

Gidel’s InfiniVision architecture is designed for scalable synchronized acquisition across multiple cameras and acquisition systems. Current Gidel CXP platforms support configurations scaling to 100+ synchronized CXP cameras while retaining FPGA-based data handling.

This architecture is relevant to applications such as:

• Synchronized multi-view imaging
• Volumetric imaging
• 3D vision
• High-speed sensor arrays
• Large inspection systems
• Defense and scientific imaging
• Distributed acquisition systems

Alternative to CoaXPress Cameras for Development and Validation

During early-stage development, system integration, and validation, engineers may not always have access to the final CoaXPress camera or may need repeatable image streams that are difficult to reproduce with a physical camera. A CoaXPress camera simulator can generate controlled video streams and test patterns, allowing frame grabbers, processing pipelines, triggering, and system behavior to be validated under repeatable conditions.

Gidel’s CamSim-X is a CoaXPress camera simulator supporting up to four CoaXPress-12 output links at up to 12.5 Gb/s per link, providing a practical alternative to physical CXP cameras during development and validation.

So, Which CoaXPress Camera Is Right for You?

There is no single “best” CoaXPress camera for every application. The right choice depends on the balance between sensor requirements, CXP link architecture, acquisition bandwidth, synchronization, and downstream processing capacity.

High-Speed Line-Scan Inspection:
Consider 8K or 16K CXP-12 line-scan cameras paired with acquisition hardware capable of sustaining the required line rate and image-data bandwidth without frame loss.

Ultra-High-Resolution Imaging:
Multi-link CXP-12 area-scan cameras using two or four links can provide the bandwidth required for high-resolution, high-frame-rate acquisition. The frame grabber and host architecture must be sized for the resulting sustained data rate.

Multi-Camera and Volumetric 3D Imaging:
Prioritize cameras and acquisition platforms that support deterministic triggering and synchronization. For larger systems, scalable synchronization architectures such as Gidel InfiniVision can coordinate acquisition across multiple cameras and systems.

Compact and Embedded Deployments:
CoaXPress cameras can be paired with integrated Edge AI platforms combining FPGA-based acquisition with NVIDIA Jetson CPU/GPU processing, reducing the need for a separate host computer and PCIe acquisition card.

High-Throughput and Data-Intensive Pipelines:
Consider an acquisition platform with inline FPGA processing for functions such as Compression, ISP, HDR, Detection, or data reduction. Processing data during acquisition can reduce host bandwidth, storage requirements, and downstream CPU/GPU processing load.

Need help configuring your CoaXPress acquisition and processing pipeline?

Explore Gidel’s PCIe CoaXPress frame grabbers to review available acquisition options.

Need help selecting the right acquisition, FPGA processing, and synchronization architecture for your CoaXPress camera system? Contact Us.