45-111-000 Video Tester is an accurate, low-cost, and easy-to-use tester for measuring composite video gain and equalization levels. It provides a visual display that allowsthe user to determine gain and equalization (EQ) levels at a glance. It automatically detects and measures NTSC (RS-170A) and PAL signal formats. It will operate for approximately 8 hours of continuous use on a single 9V alkaline battery.