The Anritsu MS9020C is a helpful optical estimating instrument that mixes an LD or LED light source and an optical power meter. It can likewise be utilized for return loss estimation. Each unit of the LD light source (4 types), LED source (7 types), the sensors (8 types), and the return loss estimation unit (1 type) is a plug in type, suitable for easy exchange and the highest suitability for field use. The MS9020C covers 0.66 µm, 0.85 µm, 1.3 µm, and 1.55 µm bands for optical loss estimation. Notwithstanding the CW mode, it offers a modulated light mode with 270 Hz, 1 kHz, and 2 kHz modulation signals. In this way, it is conceivable to measure optical loss over a wide dynamic range without stray light effect. This is the most reasonable for single mode fiber estimation. For return loss, 1.3 µm band single mode fibers can be estimated in the 0 to 40 dB range. As a power meter, each sensor has a wavelength adjustment capacity of 5 nm ventures at 3 wavelengths, so supreme esteems can be read directly.

When estimating optical fibers, it is helpful to provide one MS9020C each at both the close and far ends. By utilizing a switchable light source unit, one touch estimation of 0.85/1.3 m and 1.3/1.55 m should be possible. More precise loss estimation is conceivable by utilizing the modulated light function. At the point when a LD light source is utilized, it is conceivable to measure optical loss up to 67 dB.

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