Anritsu 

Anritsu Corporation develops, manufactures, and sells electronic measurement instruments in Japan and internationally. It operates through Communications measurement, Products Quality Assurance, and Environmental Measurement segments. The company's test and measurement products include bit error rate tester and sampling oscilloscope; mobile/wireless communications measuring instruments, such as Bluetooth and WLAN testers, cable and antenna analyzers, channel emulators/fading simulators, conformance test systems, handset one box testers, land mobile radio products, passive intermodulation analyzers, shield boxes/chambers, open RAN testers, and signaling testers; optical measuring instruments comprising OTDRs, optical loss test set/light source/optical power meter products, optical spectrum analyzers, video inspection probes, and accessories; RF microwave measuring instruments, such as power meters and sensors; signal generators; and signal/spectrum analyzers, vector network analyzers, and transport and ethernet testing products. It also provides solution for 6g, 5g/5g-advanced, internet of things, automotive, wireless connectivity, data center, photonic/transport networks, high-speed digital systems, installation and maintenance, optical/photonic device, and general-purpose instruments. The company was founded in 1900 and is headquartered in Kanagawa, Japan.