OTDR ( Optical Time-Domain Reflector) merk JOINWIT JW3302, Alat Ukur Fiber Optik. Features : - Large colorful LCD display with auto or manual adjustment of contrast - Backlight LCD display supports night operation - Easy operation with trace graphic display - Trace storage function - RS232/ USB data upload port - PC analysis software for analyzing and reporting previously stored data - Auto off function conserving battery life - DC/ AC power supply - Auto charging, 5 hours operation for one charge Basic Applications: - Measure the length of optical fiber and cable - Measure the distance between two points on the optical fiber and cable - Locate faults and ruptures of optical fiber can cable - Display distribution curve of optical fiber and cable loss - Measure attenuation coefficient of optical fiber and cable - Measure loss between two points on the optical fiber can cable - Measure loss of tie-ins - Measure reflection of reflection evens of optical fiber and cable for a specific event( transmission quality changed due to faults caused by welding, connecting, bending.