Versatile Signal Generator: This portable VGA/SVGA/XGA signal generator is designed for testing and adjusting various display devices including HDTV, LCD monitors, CRT colour monitors, and projectors. Supporting four common resolutions (640x480, 800x600, 1024x768, and 1280x1024) at 60 Hz refresh rate, it's an essential tool for electronics technicians and professionals. Professional Testing Tool: Determine whether display issues stem from the monitor or host with this simple yet powerful diagnostic device. It helps quickly identify faults through comprehensive signal testing capabilities, making troubleshooting more efficient and accurate. Multiple Display Patterns: Featuring 10 test patterns including Square/Bar/Red/Green/Blue/White/Gray/Black/Flash/Table, this generator provides comprehensive visual diagnostics. Each pattern serves a specific purpose in testing colour reproduction, pixel alignment, and overall display performance for thorough assessment. Compact And Portable Design: Measuring just 26mm x 52mm x 90mm, this white ABS signal generator fits easily in your toolkit. Powered by a single 9V battery (not included) or optional external AC adapter (7.59.0V), it offers flexibility for both field work and workshop testing. Practical Use Scenarios: Field service: diagnose whether a fault is in the monitor or the host to determine viability. Reconditioning: test recycled monitors with defects to quickly identify repairable issues. Calibration and verification: check color reproduction and pixel alignment on projectors, HDTVs, and CRT/LCD monitors in workshop or onsite environments.