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N5998A HDMI Protocol/Audio/Video Analyzer and Generator

Data Sheets

Features and Benefits

  • HDMI 1.4 compliance measurements
  • HDMI protocol analysis
  • HDMI data generator
  • Deep color support
  • 3D support in both analysis and generation
  • Extended colorimetry and content type support
  • Linkage to Keysight logic analyzer for deep analysis

N5998A HDMI Protocol/Audio/Video Analyzer and Generator

The N5998A is the reference high-speed

  • Protocol analyzer
  • Video timing analyzer
  • Video picture analyzer
  • Audio timing analyzer
  • Audio/video protocol generator for HDMI compliance tests required by the compliance test specification (CTS 1.4). The global HDMI authorized test centers (ATCs) rely on the N5998A.

The HDMI protocol/audio/video analyzer and generator consists of the following components shown in Figure 1:

  • Keysight Technologies, Inc. N5998A unit
  • Personal computer running Windows XP with a USB 2.0 port available and connected to the Keysight N5998A unit for downloading the captured TMDS sequences (not included in the product)
  • Keysight HDMI software running on the PC with the licenses enabled
  • HDMI cable to connect the device under test (DUT) to the N5998A. Cable not provided with the product.

HDMI analyzer features

  • User-controlled execution of individual or multiple protocol/audio/video compliance tests
  • Clear indication of test PASS/FAIL results, view results in the application or can be saved to an offline text file
  • Process captured HDMI data file and shows details of each frame. e.g. the number of packets in the frame and the specific packet types, video data periods, preambles, etc.
  • Support for deep color 30-bit, 36-bit and 48-bit
  • Detailed decode, view the values of the channel data anywhere in the frame

HDMI generator features

  • Ability to generate protocol and audio pattern, including deep color patterns
  • Predefined test patterns are installed with the software installation

Debug features

  • With the N5998U-DBG option, you can import the captured data into the Keysight logic analyzer software for deeper analysis
  • For additional test patterns on the generation side, Keysight’s partner BitifEye provides an GUI based frame generator tool.

N5998A HDMI Protocol/Audio/Video Analyzer and Generator

Protocol/audio/video analyzer

The N5998A’s protocol/audio/video analyzer supports the HDMI source compliance tests 7-16 through 7-40, with the exception of tests 7-20, 7-21, 7-22 and 7-39. The protocol analyzer captures up to 4 GB of data as shown in Figure 2. The analysis is then conducted in postprocessing.

Prior to the processing, a data file has to be uploaded, and saved on the controller PC. The CTS source audio tests require the minimum sample time of 2 seconds. The minimum file size to meet this requirement for each primary video format is calculated with the formulas below. Note one pixel is 64 bit (8 Byte) in the target file.

The N5998A HDMI software provides the pattern required for the sink tests 8-16, 8-21, 8-23, 8-29, 8-31 and, in conjunction with the Keysight TMDS signal generator E4887A, 8-25.

If you need to generate additional patterns, beyond those defined by the CTS, Keysight in partnership with BitifEye provides a frame generator application. The frame generator (BIT-HDMI-FG-PAG), allows you to define the patterns to generate and automatically sends it out through the N5998A PAG. For more information regarding the frame generator application, please see the related literature section for the datasheet.

required). This enhancement enables the user to export the captured file into a format that can be viewed by the logic analyzer software (no logic analyzer module hardware required). In the logic analyzer software, you will be able to see not only the pixel information, but also see the relationship between the data channels, as well as the control signals, such as V_Sync, H_Sync, video guard band, etc.

The waveform view clearly highlights the relationship between the different signals and allows for easy navigation through markers and zoom-in/zoom-out capabilities. Other tools for the logic analyzer software such as filter and colorization are also available.

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