The MS9020D is a handy optical measuring instrument which incorporates an LD or an LED light source and an optical power meter. It can also be used for return loss measurements. Every unit of the LD light source (4 types), LED source (7 types), the sensors (9 types) and the return loss measurement unit (1 type) is a plug-in type, for easy exchange and highest suitability for field use.The MS9020D covers 0.66 Microm, 0.85 Microm, 1.3 Microm and 1.55 Microm bands for optical loss measurement. In addition to the CW mode, it provides a modulated light mode with 270 Hz, 1 kHz and 2 kHz modulation signals. Therefore, it is possible to measure optical loss over a wide dynamic range without stray light effect. This is the most suitable for single mode fiber measurement. For return loss, 1.3 Microm band single mode fibers can be measured in the 0 to 40 dB range. As a power meter, every sensor has a wavelength calibration function of 5 nm teps at three wavelengths, so absolute values can be read directly.
