Common EDID Tools Overview
EDID (Extended Display Identification Data) describes display timing, resolutions, color capabilities, and extensions. It is fundamental to link negotiation on HD, DisplayPort, and related interfaces. In practice you may need to add custom PC resolutions, prepare standard EDID files for matrix switchers, or emulate a Sink in the lab for compliance testing. The three tools below target Windows end users, AV integrators, and protocol analyzer users respectively.
At a Glance
| Tool | Vendor | Platform | Primary use | Modifies hardware EDID? |
|---|---|---|---|---|
| CRU | ToastyX | Windows | Custom resolutions, refresh rates, FreeSync ranges | No (registry software override) |
| AW EDID Editor | Analog Way | Windows / macOS | Create and edit standard EDID files | No (file editing) |
| 980 Manager | Quantum Data (Teledyne LeCroy) | Windows | Control 980 analyzers/generators; manage instrument EDIDs | Writes EDID into 980 hardware |
CRU (Custom Resolution Utility)
- Home / download: Monitor Tests forum thread (current release cru-1.5.3)
- Author: ToastyX (Monitor Tests)
- Role: EDID override editor for the PC display path, focused on custom resolutions and refresh rates
CRU shows how the monitor defines resolutions and capabilities in EDID and lets you write a software EDID override in the Windows registry. It does not rewrite EDID stored in the display firmware. Typical uses include adding non-standard modes, removing unwanted resolutions, tuning FreeSync ranges, and unlocking higher refresh rates.
Key features
- Edit detailed resolutions and extension blocks (including DisplayID)
- Multiple timing generators (Automatic PC/HDTV, CVT-RB, Exact, and more)
- Use restart.exe to restart the graphics driver after changes; reset-all.exe clears all overrides
- Companion Scaled Resolution Editor (SRE) manages GPU-scaled resolution lists
Requirements and caveats
- Windows Vista or later (vendor GPU drivers must support EDID overrides; the Microsoft Basic Display Adapter does not)
- AMD/ATI, NVIDIA, and recent Intel integrated graphics are supported; some older Intel GPUs need the alternative EXE export install path
- Know how to reach Safe Mode before editing, in case a bad override leaves you without a picture
- Known limitations with multi-display setups, NVIDIA DSC, and non-PnP displays on Windows 11—see Compatibility issues and workarounds in the main forum post
Typical workflow
- Run
CRU.exeand pick the target display ((active)= currently connected) - Edit detailed resolutions and/or extension blocks
- Click OK to save to the registry
- Run
restart.exeto restart the graphics driver - Select the new resolution or refresh rate in Windows display settings
AW EDID Editor
- Product page: Analog Way AW EDID Editor
- Role: Standalone EDID file editor for system integrators and AV professionals
Analog Way presentation switchers (LivePremier, Alta 4K, Midra 4K, and related lines) often need a preferred input format or help resolving resolution and audio compatibility in the field. AW EDID Editor creates, opens, and edits standard EDID files (text or binary) for import into matrices, switchers, or EDID manager hardware.
Key features
- Wizard Mode for fast EDID creation
- Advanced Mode for field-level tweaking
- EDID 1.3 and 1.4 support
- CTA-861-G and DisplayID 1.3 extensions
- Formats 4096 pixels wide and above
- Windows and macOS builds (download area currently lists v3.0.20)
Typical use cases
- Preload a “virtual display” EDID on switcher inputs to lock source output format
- Troubleshoot resolution, color space, or audio mismatches between sources and matrices
- Edit EDID offline on Mac or Windows, then deploy to third-party EDID emulators
Related resources
The product page offers a technical datasheet, quick start guide, and the white paper Understanding EDID in the downloads section.
980 Manager
- Reference download listing: 980 Manager 4.10 (third-party software directory; use Teledyne LeCroy / Quantum Data support for official distribution)
- Role: PC control application (external GUI Manager) for 980-series video analyzers and generators
The Quantum Data 980 platform is a modular HD protocol test system that can act as Source or Sink for link training, metadata analysis, and compliance testing. 980 Manager configures instrument IP, loads format lists, views live DDC/metadata, and manages EDIDs stored on the instrument.
EDID-related capabilities
- EDID Editor Panel: edit EDID fields and extension blocks
- EDID Management Panel: manage the instrument EDID library and apply a selected EDID to the 980 Rx port to emulate a display with specific capabilities
- Supports HD Source / Sink compliance workflows: acquire test EDIDs, assign them to analyzer ports, run EDID-related compliance tests
- Import/export EDID files, view connected display EDID, and coordinate with format list editors
Typical use cases
- Protocol-level debug for silicon and firmware teams (DDC capture, SCDC, HDCP, and more)
- HD compliance and interoperability validation for source and sink devices
- Fixed Sink EDID in the lab to reproduce customer field compatibility issues
Prerequisites
Requires 980-series hardware (e.g. 48G Video Analyzer/Generator modules). 980 Manager is part of the instrument ecosystem—it does not replace standalone file editors like CRU or AW EDID Editor for offline EDID work alone.
Which tool to use
| Goal | Suggested tool |
|---|---|
| Add resolutions or refresh rates on a Windows PC | CRU |
| Prepare EDID files for a switcher or matrix | AW EDID Editor (or vendor-specific tools) |
| Emulate a Sink on an analyzer and run compliance tests | 980 Manager + 980 hardware |
| Decode an existing EDID blob | Site EDID decode tool |
| Browse real-world display EDID samples | linuxhw EDID browser |
Changing EDID or overriding advertised capabilities can affect link stability and HDCP behavior. Validate on your target source, cable, and display combination before production or certification.