Chroma A223805 single port HDMI 2.1 supports up to 8K@60Hz resolution image output, improving overall image transmission efficiency compared with previous HDMI 1.4 versions and meeting today's high-specification 8K image testing requirements.

FRL (Fixed Rate Link) mode improves on the TMDS transmission mode previously used in HDMI 1.4/2.0, enabling more efficient image transmission. FRL mode supports transmission with a bandwidth of up to 48Gbps. The Data Rate can be set to 3, 6, 8, 10 or 12 Gbps according to different resolutions, and the number of Lanes can be set to 3 or 4 Lanes.

VESA DSC (Display Stream Compression) has been adopted by the HDMI Forum in its HDMI 2.1 specification. Chroma A223805 supports VESA DSC version 1.2a with a maximum compression ratio of 3:1. With DSC, users can transmit a larger amount of data using the same bandwidth. When DSC is not used, the HDMI 2.1 specification supports 4:2:0 pixel encoding output to a maximum resolution of 8K@60Hz. With the DSC function, the color depth can be raised further to either 4:4:4 or 4:2:2.

HDCP (High-Bandwidth Digital Content Protection) prevents illegal copying of data as it is transmitted through the interface. The A223805 supports HDCP versions 2.3, 2.2 and 1.4 and allows the user to freely switch between the three versions. During the testing process, results can be output directly on the screen of the DUT, enabling users to instantly view related HDCP handshaking information.

Chroma A223805 supports HDR (High Dynamic Range) output which greatly improves the brightness range and color gamut, closely approaching real image quality as seen by the human eye. HDR test items include brightness, contrast, color, sharpness and dynamic image, the main test targets being those factors that most affect the consumer’s visual perception. Users can freely adjust the HDR metadata to carry out HDR related tests. The A223805 module supports HDR10 and HLG, and comes with built-in HDR test patterns, such as grayscale, color bars and various window types.

The A223805 can act as an eARC Receiver, monitor the Training process and verify the DUT’s eARC test results. As an HDMI transmitter, it can transfer lossless and uncompressed audio information through LPCM. The module features 8 independent audio test signal generators (FL, FR, RL, RR, FC, LFE, RLC, RRC), which can each be modulated by enabling or disabling its respective sound volume, tone, audio frequency, sample rate, sample bit, and sweep, providing a total of 48 different test combinations.

EDID (Extended Display Identification Data) is a VESA-defined data standard for identifying DDC displays. The A223805 directly reads, compares and writes to the EDID register inside the display through I2C, which includes the supplier’s information, image size, color setting, and frequency range. At the same time, users can edit the EDID through an external PC's software interface and display the complete analysis results.

SCDC (Status and Control Data Channel) is an HDMI 2.0 communication protocol that enables exchanging status and control information between the signal source and sink. The A223805 can display important signal indicators in the SCDC such as TMDS Scrambler Status and Channel Error Count in real-time on the output screen, allowing the user to conveniently appraise the results during the testing process.

Chroma A223805 supports a variety of gamut outputs. In addition to the basic gamut space, it also supports wide color gamut color space, including RGB, ITU-R BT.601, ITU-R BT.709, xvYcc, SYCC, AdobeRGB, AdobeYCC, ITU-R BT.2020 and DCI-P3. YCbCr 4:4:4, 4:2:2 and 4:2:0 pixel encoding and 6 / 8 / 10 / 12 bits color depths can all be set up to provide a wider color range and achieve true natural color and high-resolution images, in line with today's high-specification 8K video testing needs.

FEC (Forward Error Correction) is a technique to control transmission errors in a one-way communication system. It reduces the bit error rate by sending additional information along with the data for error recovery. The A223805 packet transmission supports FEC, which can avoid data loss and damage during transmission, and can automatically correct and recover data.

Chroma 2238 Video Pattern Generator integrates complete executable programs with timings, test patterns, and audio that can be configured freely according to testing needs. Not only does the equipment carry up to 2000 timing patterns and 5000 images, users also can add their own test patterns to meet a large variety of test specifications.

The built-in resolution test chart can accurately indicate the correct scale according to different Timings. In addition to geometric shapes and aspect ratio tests (4:3, 16:9), other test patterns such as Color Bar and Grayscale are also included. With these test patterns, users can easily determine the display's imaging quality and simultaneously monitor the HDCP and EDID execution status on the on-screen display, especially useful for R&D, production and QA purposes.

The A223805 is a reliable and impartial signal module that delivers best-in-class image quality inspections and stringent signal integrity tests.

High conductivity beryllium copper improves the conductivity between components and reduces electromagnetic radiation leakage interfering with the DUT, in compliance with CE/EMC (Electromagnetic Compatibility) standards.

Licensed by The Institute of Image Information and Television Engineers in Japan, a variety of 8K Ultra-High Definition wide-gamut test patterns are available. (Optional)

Chroma 2238 Video Pattern Generator applies to imaging devices, including TV, business/gaming monitor, home/theater projector, VR/AR, medical equipment, aviation/aerospace dashboard, signage, and automotive applications.


Gaming Monitor



Medical Equipment



Video Pattern Generator 2238
HDMI Module Specification Table
Model A223802 A223805 A223812 A223814
HDMI HDMI 2.0b HDMI 2.1 HDMI 2.1 HDMI 2.1b
Port(s) 4 1 1 2
8K@60Hz (4 ports)
8K@60Hz 8K@60Hz 10K@120Hz
FRL - 48G 48G 48G
HDCP v2.2 / v1.4 v2.3 / v2.2 / v1.4 v2.3 / v2.2 / v1.4 v2.3 / v2.2 / v1.4
Color Depth 24/30/36 bits 24/30/36 bits 24/30/36 bits 24/30/36 bits
Color Space
  • RGB
  • ITU-601
  • ITU-709
  • xvYCC-601
  • xvYCC-709
  • sYCC-601
  • Adobe YCC-601
  • Adobe RGB
  • BT2020 YCC
  • DCI-P3 RGB
  • BT2020 RGB 
  • RGB
  • ITU-601
  • ITU-709
  • BT2020 YCC
  • RGB
  • ITU-601
  • ITU-709
  • BT2020 YCC
  • RGB
  • ITU-601
  • ITU-709
  • xvYCC-601
  • xvYCC-709
  • sYCC-601
  • opYCC-601 (Adobe YCC-601)
  • opRGB (Adobe RGB)
  • BT2020 YCC
  • ST2113 P3D65 RGB (DCI-P3)
  • BT2020 RGB
  • BT2020 cYCC
HDR HLG / HDR 10 HLG / HDR 10 - HLG / HDR 10 / HDR10+
Dolby - - - Dolby Vision
VRR - - -
FVA - - -
ALLM - - -
QMS - - -
HEVC H.265 - - -
eARC - -
Full Line of Chroma 2238 Signal Modules

Chroma A223808 Power Module Chroma A223807 USB-C Control Module Chroma A223813 DisplayPort Signal Module Chroma A223814 HDMI Signal Module Chroma A223805 HDMI Signal Module Chroma A223812 HDMI 8K Media Player Module Chroma A223801 DisplayPort Signal Module Chroma A223800 12G-SDI Signal Module Chroma A223806 DVI Signal Module Chroma A223802 HDMI Signal Module Chroma A223810 USB-C Signal Module Chroma A223803 Analog Signal Module Chroma A223809 Audio Test Module Chroma A223804 USB-C Signal Module Chroma 2238 video Pattern Generator

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All specifications are subject to change without notice.

HDMI Signal Module

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