Product ID: AJSC-1X

Product Summary

The Allion AJSC-1X is an SCDC/EDID Controller designed for the latest HDMI 2.1/1.4 source/sink compliance electrical testing. It is used for HDMI Source, Sink, Repeater and AOC Cable testing with the aim of controlling and emulating HDMI 2.1/1.4 EDID and SCDC signals.


It applies to all HDMI products (HDMI Source, Sink and AOC Cable).


  • Dimension: 82mm(W) X 29mm(H) X 81mm(D) (Case Only)
  • Weight: 125g (AJSC-1X Only)
  • RoHS/REACH Compliant

Latest Software(GUI) Download

For the latest version of AJSC-1X Software (GUI), please link to online shop for log in and download.

Key Feature

1. Two control modes: Initiator mode
/Follower mode (Sink and Source, please see the figure below):

  • HPD and +5V Power input/output can automatically switch according to different modes
  • This test fixture also has HPD and +5V Power control functionality

2. Easy and Flexible to Edit Parameters

  • Device kit includes software to assist users immediately reading HPD, +5V Power, and Scramble status
  • One-Click activation for Scramble function and also to simulate PC EDID file, e.g. binary files

3. Multiple Built-In EDIDs Preset

  • Multiple built-in EDIDs for HDMI 2.1/1.4 electrical compliance testing, including DVI to 6G support
  • For Source DUT, making it it is easier to output the expected video format
  • Easy to load and customize your EDID file

4. Light, Small, Easy to Use

  • Power supplied via USB port, without the need for an external (5V) power supply
  • Connect to PC or Oscilloscope via USB cable, and choose between a number of operation modes to begin without any complex setup

5. Additional DDC Initiator Port for Active Cable and Repeater Devices

AJSC-1X provides an additional DDC initiator port for Active Cable and Repeater, which can be used simultaneously with the main port. When conducting compliance tests on Active Cable and Repeater, you only need one AJSC-1X to control both input and output.

6. DDC/CEC Simultaneous Monitor

DDC monitor can monitor DDC transactions including FRL Link Training, TMDS Scrambling, and EDID reading sequences, which is helpful for promptly resolving any issues encountered during testing.

AJSC-X also equips the CEC monitor pin. In addition to DDC transactions, it enables simultaneous monitoring of CEC message transactions. (*CEC Monitor license required)