Additional Features: Frequency range: 1 MHz to 1.8 GHz Twenty-millisecond RF sweep time ±1.5 dB frequency response accuracy One-button FCC proof of performance CATV measurements Rugged, portable, weather-resistant package Protective soft yellow carrying case included Thirty-minute warm up Built-in preamplifier The 8591C Cable TV analyzer provides dedicated non-interfering RF and video measurements in a durable, economical instrument. The one-button measurements can be used for flexible troubleshooting or to test the entire system automatically at the touch of a button. The flexible hardware and software design lets you easily upgrade the analyzer to accommodate changes in required measurements and measurement techniques. For added flexibility, NTSC format is standard, with options available for worldwide PAL and SECAM formats and frequency plans.