The Advantages of CoaXPress (CXP) Cameras in High-Speed Applications

The Advantages of CoaXPress (CXP) Cameras in High-Speed Applications

The advancement of CMOS sensors has resulted in cameras with significantly higher potential sensitivity, speed, dynamic range, and resolution. Sensor evolution requires communications standards to evolve, and CXP cameras provide some of the highest bandwidth and throughput to keep up with rapidly evolving sensor capabilities.

CXP cameras are, in essence, among of the most reliable high-speed cameras on the market. Data transfer is reliable, and power is delivered via a single cable.

In high-speed applications, CXP cameras offer a wide range of benefits. CXP cameras are highly scalable for future applications and are ideally suited for high-speed imaging because of the underlying CoaXPress technology.

What is CoaXPress?

CoaXPress (CXP) is a coaxial cable-based asymmetric high-speed serial communication standard. It was created for the machine vision industry and is a digital interface specification. Its high-speed and high-bandwidth data transfer makes it suitable for machine vision applications that require high-resolution imaging and fast image transfer to the host computer.

One of the important developments in industrial image processing in production automation and optical inspection is to increase data throughput rates. While sensor performance has previously limited data throughput rates, today's data transmission bottlenecks are caused by interfaces such as USB 3.0 in popular CMOS sensors with high frame rates. Users have been able to fully leverage the power of current image sensors and obtain optimum performance in their applications thanks to high-speed interfaces like CoaXPress.

CoaXPress 2.0

For CXP-10 and CXP-12, CoaXPress 2.0 increases the up-connection bandwidth from host to device from 20.83 Gbps to 41.6 Gbps, allowing a host to transmit trigger signals to a camera at nearly 600 kHz in single trigger message mode or nearly 300 kHz in dual trigger message mode (rising/falling edges). Another critical factor in CoaXPress 2.0 extended bitrates is cable length. The cable lengths for lower bitrates have been significantly improved as a result of the efforts expended on cable drivers and equalizer to enable CXP-10 and CXP-12.

Features of CoaXPress 2.0

  • Download Speed ​​has been doubled from 6.25 Gbps up to 12.5 Gbps.
  • Uplink speed has been extended from 20.83Mbps to 41.66Mbps.
  • Added Micro-BNC connector.
  • Multi-Destination has been added.
  • Event packet and Heartbeat packet based on GenICam have been added.

Features of CoaXPress 1 and 2

High-speed Applications

CoaXPress is well-suited for applications that demand high-speed and high-bandwidth image transfer, as previously stated. Factories are constantly seeking for ways to raise their throughput to maximize revenues, but they also want to preserve or improve the quality of their products. In these cases, the vision inspection system's speed is frequently the limiting element in capturing the required images. CXP cameras provide a higher bandwidth than USB3 Vision and GigE Vision, allowing for higher throughput at a lower cost than 10 GigE Vision. Cabling and connectors are another advantage of CoaXPress in industrial applications.

Coaxial cable is less expensive and due to its insulation, is more resistant to electromagnetic interference (EMI). It's an extremely steady, sturdy, and versatile camera interface with a maximum cable length of 40 meters at CXP-12 speed. Automated optical inspection, PCB inspection, wafer inspection, and flat panel display inspection are among applications that can benefit from the CoaXPress interface.

With CoaXPress's increased bandwidth, higher resolution sensors can be deployed to capture extremely detailed images while still attaining the required frame rates. Rather than using numerous lower-resolution cameras to reach the needed frame rate for an application, a single CXP camera with an equivalent resolution can be a simpler and more cost-effective alternative. Aerial imaging and surveillance, where a broad area must be scanned using a fast-moving drone or UAV, or train railway and power line inspection systems of high-speed trains are two examples of applications for these types of imaging systems.

The very low-latency of CoaXPress also makes it suitable for vehicle tracking and highway control in intelligent traffic systems (ITS) applications. Medical applications which depend on low latency and high resolution images, such as telesurgery systems, can also really benefit from using CXP cameras.

Checklist: When Should You Utilized CoaXPress in Your Applications?

If any of the following applies to you, you should explore CoaXPress technology:

  • You want to use your high-resolution sensor at maximum speed, but the present interface stops you from doing so.
  • Your existing interface involves the use of heavy, rigid cables, which makes space-saving integration more difficult.
  • You want to be able to bridge longer distances while keeping at high speed.
  • You need cameras with the most up-to-date high-resolution image sensor technology.
  • You want to use data cable to synchronize the operation of multiple speed, high-resolution cameras.
  • You want to switch from analog or Camera Link cameras.
  • You require a system that has a low CPU load for image acquisition.

Meet Vieworks High-speed & High Resolution CXP Cameras with CoaXPress 2.0 interface

Vieworks High speed and High Resolution CXP Cameras with CoaXPress 2.0 interface

Model Resolution Frame Rate Sensor Pixel Size  (㎛ x ㎛)
VC-5MX2-M/C 289 2592 × 2160 289 fps GMAX2505 2.5 × 2.5
VC-9MX2-M/C 262 4192 × 2160 262 fps GMAX2509 2.5 × 2.5
VC-12MX2-M/C 330 F 4096 × 3072 335 fps AMS CMOSIS CMV 12000 5.5 × 5.5
VC-18MX2-M/C 132 4480 × 4096 132 fps GMAX2518 2.5×2.5
VC-25MX2-M/C 150 I 5120 × 5120 150.2 fps GMAX0505 2.5 × 2.5
VC-65MX2-M/C 71 I 9344 × 7000 71.1 fps GMAX3265 3.2 × 3.2


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