If the photograph is clicked, it grows.

Keysight PS-X10-100 20GHz RIN Measurement System
JPY1,200,000 1stock
opt875

Software CD-ROM is missing.
This product is used in combination with DMM and signal analyzer.

Optical wavelength:780~1625nm
Measurement Frequency:10MHz~20GHz
Optical Input Power:5mW(+7dbm)
Minimum Measurable RIN Value:-157dB/Hz

http://www.sycatus.com/en/products/rin/
Japanese Manual