Chameleon II CoaXPress over Fiber Stand Alone Camera Simulator


• Static and dynamic test patterns
• BMP/RAW/TIFF/JPEG etc. image files
• RAW video files
• Streaming video 3,347 MB/s
• Data rates up to 15.9375 Gbps per link
• Up to 32 Gbyte image buffer
• Multiple pre-recorded video in sequential/loop modes
• Fully programmable image timing
• Fully programmable configuration parameters
• Emulation of Camera controls and triggers
• GUI Interface
• Up to 4 CoaXPress-over-Fiber (Cof) links support
• Frame and line scan formats support
• Flexible GPIO interface:
– 4 TTL configurable I/Os
– 4 LVTTL configurable I/Os
– 2 LVDS inputs
– 2 LVDS outputs
– 4 opto-isolated inputs
– 4 opto-isolated outputs
– 4 quadrature rotary encoders
– Integrated strobe controller
– 4 timers
• CoaXPress-over-Fiber (Cof) v2.1 compliant
• Gen<i>Cam compliant
• Supporting Windows, Linux OS and Nvidia Jetpack
• API for custom application development
• Plug-in modules for Matlab, HALCON, Cognex and
• SFP+ connectors for CoaXPress-over-Fiber (Cof)
• External Thunderbolt 3 enclosure
• Per-Link LED indication
• 0°C to +50°C operating environment temperatures
April, 2024


Chameleon II CoF Standalone is the industry’s first
CoaXPress-over-Fiber (Cof) v2.1 standard camera
simulator. Capable of generating video streams and test
patterns of up to 4 links in single, dual or quad modes. With
each link supports standard CoaXPress-over-Fiber (Cof)
v2.1 bitrates of up to 15.9375 Gbps. With a grand total PCI
Express transfer rate of up to 3,347 MB/s, the Chameleon
II CoF Standalone is ideally suited for development of
industrial, defense and aerospace Machine Vision systems
and applications
The Chameleon II CoF Standalone can easily transmit
generic test patterns, customers specific pre-processed
data or custom video streams on the CoaXPress-over-Fiber
(Cof) v2.1 links. A GPIO connector enables machine
control signals such as triggers, timers, shaft-encoders,
exposure-control and general I/O along with video stream
acquisition. Standard SFP+ and headers connector are
used as the CoaXPress-over-Fiber (Cof) v2.1 interface and
the general purpose I/O, respectively.


Form factor Thunderbolt 3 enclosure
Format External Thunderbolt 3 enclosure
Cooling method Fan cooled
Mounting Stand Alone
Connectors Ports 1 through 4 via x4 SFP+ connectors for CoaXPress-over-Fiber (Cof) v2.1 interface
x1 I/O connector 26-pin 2-row 0.1” pitch pin header with shrouding on board
Dimensions 220 mm x 143 mm x 89 mm (8.7” x 5.6” x 3.5”)
Weight 1500 g (52.9 oz)
Host Bus
Standard PCI Express 3.0
Link width 4 lanes
1 or 2 lanes with reduced performance
Link speed 8.0 GT/s (PCIe 3.0)
5.0 GT/s (PCIe 2.0) with reduced performance
Maximum payload size 2,048 bytes
DMA 64-bit addressing support
Scatter gather support
Physical address support (GPU transfers)
Peak delivery bandwidth 3,938 MB/s
Effective (sustained) delivery bandwidth 3,347 MB/s (Host PC dependent)
Power consumption 16.8 W, excluding camera and I/O power output
Camera / Video Simulation
Interface standard(s) CoaXPress-over-Fiber (Cof) v2.1
Status LEDs 1 bicolor status LED per connector
4 System status LEDs
Number of Simulated cameras 1
Number of links per single camera Up to 4
Number of streams per single camera 1
Synchronization between simulators Yes
Line-scan cameras supported Yes
Maximum aggregated camera data transfer rate 63.8 Gbit/s
Supported down-connection speeds • 10.3 Gbit/s
• 12.5 Gbit/s
• 13.75 Gbit/s
• 15.9375 Gbit/s
Supported up-connection speeds • 10.3 Gbit/s
• 12.5 Gbit/s
• 13.75 Gbit/s
• 15.9375 Gbit/s
Maximum stream packet size 8,192 bytes
Power over protocol
Bandwidth limitations 8 bpp, 12 bpp, 14 bpp, 16 bpp – 40 Gbps protocol limited
10 bpp – 34 Gbps
Image width 16 pixel to 16 Megapixels
Image height 1 pixel to 16 Megapixels
Arbitrary image simulation Not supported
Link Sharing Images must be striped prior to loading to API or APP
Camera types Area-scan cameras:
Gray-scale and color (RGB and Bayer CFA)
Single-tap (1X-1Y) progressive-scan
Multi tap images can be simulated with API and user image segmentation
Line-scan cameras:
Gray-scale and color RGB
Camera pixel formats supported Raw, Monochrome, Bayer, RGB, YUV, YCbCr and RGBA (PFNC names):
Raw (Without headers)
Mono8, Mono10, Mono12, Mono14, Mono16
BayerXX8, BayerXX10, BayerXX12, BayerXX14, BayerXX16 where XX = GR, RG, GB, or BG
RGB8, RGB10, RGB12, RGB14, RGB16
YUV422_8, YUV422_16
YUV444_8, YUV444_10, YUV444_12,YUV444_14, YUV444_16
YCbCr601_422_8, YCbCr601_422_10, YCbCr601_422_12, YCbCr601_422_14, YCbCr601_422_16
YCbCr709_422_8, YCbCr709_422_10, YCbCr709_422_12, YCbCr709_422_14, YCbCr709_422_16
YCbCr709_444_8, YCbCr709_444_16
Camera / Video Simulation
Status LEDs 1 bicolor status LED per camera connector

4 System status LEDs

Number of cameras 1
Number of links per single camera Up to 4
Number of streams per single
Synchronization between cameras Yes
Single-tap (1X-1Y) interlaced
YUV411_8, YUV411_10, YUV411_12, YUV411_14, YUV411_16
YUV422_8, YUV422_10, YUV422_12, YUV422_14, YUV422_16
YUV444_8, YUV444_10, YUV444_12, YUV444_14, YUV444_16
YCbCr601_411_8, YCbCr601_411_10, YCbCr601_411_12, YCbCr601_411_14, YCbCr601_411_16
YCbCr601_422_8, YCbCr601_422_10, YCbCr601_422_12, YCbCr601_422_14,YCbCr601_422_16
YCbCr601_444_8, YCbCr601_444_10, YCbCr601_444_12, YCbCr601_444_14, YCbCr601_444_16
General Purpose Inputs and Outputs
Number of lines 20 I/O lines:
2 differential inputs
2 differential outputs
4 singled-ended TTL inputs/outputs
4 singled-ended LVTTL inputs/outputs
4 opto-isolated inputs]
4 opto-isolated outputs
Usage Any System I/O input lines can be connected to any I/O output line
Any I/O input line can be used to decode A/B and Z signals of a motion encoder
Any I/O input line can generate any trigger event
Any I/O input line can trigger a timer
Electrical specifications Differential lines – LVDS compatible
TTL lines: 5 V TTL compliant
LVTTL lines: 3.3 V LVTTL compliant
Isolated lines: opto-isolated lines with voltage range up to 30 V
Filter control Glitch removal filter for Encoders and Triggers
Configurable filter time between 0 µs and 34 ms
Filter time resolution of 8 ns
Polarity control Yes
Encoders 4 quadrature encoders with A/B and Z inputs
32-bit position counter
Forward and backward counting
Position trigger support
Noise filtering
Timers 4 general purpose timers
Configurable delay and duration
32-bit accumulator
Event reporting 64-bit system timestamp event reporting
Each I/O line can generate event on configurable edge
Each Timer can generate event
Each encoder can generate event
Area-Scan Camera Control
Trigger Precise control of asynchronous reset cameras, with exposure control.
Support of camera exposure/readout overlap
Support of triggering from encoder or timer
Support of external hardware trigger, with optional delay, filtering and trigger decimation
Strobe Accurate control of the strobe position for strobe light sources. Support of early and late strobe pulses
On-Board Processing
On-board memory 4 GB DDR4
Additional features Packing of 16-bit LSB aligned to 10/12/14-bit
Data stream statistics Measurement of:
Frame rate
CRC Errors
Transmit frames
Transmit packets
Test packets
Event signaling and counting The application software can be notified of the occurrence of various events:
Newly acquired buffers
I/O events
Timer events
Encoder events
Bayer De-Mosaic Full 16-bit resolution
Bilinear 3×3
Bilinear 3×2 for linescan with gradient correction
Color transformation Full 16-bit resolution 18-bit coefficients table
Color space conversion
Gain and Offset
Decimation Line skip
Additional features Unpacking of 10/12/14-bit to 16-bit LSB aligned
Frame timestamp 64-bit with 8 ns precision
Received/Dropped frames
Received/Dropped packets
Host PC operating system Microsoft Windows 10 64-bit version
Microsoft Windows 11 64-bit version
Signed and certified kernel driver supporting Windows 10 and 11
Source code Linux kernel driver (Automaticlly compiled during installation)
Tested for Ubuntu 18.04, 20.04 and 22.04 versions
Nvidia Xavier AGX (Jetpack 5.1.1 and 4.6.1)
Nvidia Orin AGX (Jetpack 5.1.1)
Gen<i>Cam Support of Gen<i>Cam 3.2
Full camera and Frame Grabber parameters configuration
Buffer management Circular buffer support
Accumulation of several frames/lines to single buffer to reduce CPU load
Flexible buffer queuing
DMA Buffer filling directly to system memory
GUI Supported for Windows and Linux OS
Multi camera display and configuration
Image/video recording and playback
Debugging capabilities Event logging
Statistics counters
APIs Gen<i>Cam, GenTL producer libraries, ANSI C, Python and NET bindings
x86_64 dynamic library designed to be used with ISO-compliant C runtime
Allows for development of x86_64 applications
Plug-in modules for Matlab, HALCON, Cognex and Labview
Export straightforward, unified and easy-to-use API across all Grabber types
Include practical examples based on API functions, for supported language wrappers
Documentation include sample snippets for API usage
Environmental Conditions
Operating ambient air temperature 0°C to +50°C ( 32°F to +122°F)
Operating ambient air humidity 10 Storage ambient air temperature
Storage ambient air humidity 10 Shock/Vibration
Electromagnetic – EMC standards The European Council EMC Directive 2004/108/EC
The Unites States FCC rule 47 CFR 15
EMC – Emission EN 55022:2010 Class B
FCC 47 Part 15 Class B
EMC – Immunity EN 55024:2010 Class B
EN 61000-4-3
EN 61000-4-4
EN 61000-4-6
Flammability PCB compliant with UL 94 V-0
RoHS Compliant with the European Union Directive 2011/65/EU (RoHS2)
REACH Compliant with the European Union Regulation No 1907/2006
WEEE Must be disposed of separately from normal household waste and must be recycled according to local regulations
Ordering Information
Part Number KY-Chameleon-II-COF-SA
Optional accessories SFP+ modules
Fiber cables
GPIO expansion bracket

Block diagram


  • CoF Camera Simulator
  • Hardware user manual
  • Software installation and documentation (Disk-on-Key)
  • Power supply (optional)
  • Fiber cables (optional)

Contact us

    Chameleon II Downloads