S9902 Signal Strength Meteris a good kind of CATV Equipment. Key functions: Full digital TV/CATV/FM signal level measurement, Dual channel frequency level measurement, inclination ratio measurement, C/N, V/A measurement, voltage measurement of trunk line alternating current, accompanying sound monitoring and backlight LCD.Features: Features:More convenient and more practical dual-frequency- level measurement. Backlight LCD displays large characters under wide temperature range. Particularity: 0-9 numeric keys enable quickly entering measured channels. Independent function keys enable quickly accessing various measurement states. More than 6 hours of operating time with high performance Ni-MH batteries. Energy saving design, automatically turn off without operations over 5 minutes. User can change the input end by him/herself. More compact, more light. High-intensity and anti-shock materials make it a hard and durable product. Technical Specifications: Input Frequency: Range: 46-870 MHz Frequency Stability: ≤ 30 ppm Definition: 10KHz Measuring frequency level: Range: 30 120dBµV Accuracy: ≤2dB Definition: 0.1dB V/A measurement: ≤± 2dB C/N measurement: ≤± 2.5 dB (Input signal>80dB) Voltage measurement of alternating current: Range: 30 - 100V (alarm if over 100V) Accuracy: ≤± 1V Definition: 0.1V RF input impedance: 75Ω Measurement bandwidth: 230KHz ± 50KHz Display mode: Backlight LCD displays large characters under wide temperature range. Display size: 52 x 28mm Channel Table: Presets standard channel table in the meter. Working Environment: Working temperature range: -10 ºC +50 ºC Relative humidity: ≤ 80% RH Storage temperature range: -20 ºC +60 ºC Power supply modes: AC: 85V-240V/50Hz-60Hz DC: Hi-MH Batteries: 7.2V Dimension: 70x160x48 (mm) Weight: 450 g