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OPTICALMEASURINGINSTRUMENTS

OPTICAL LOSS TEST SET

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MS9020D

For Measuring Optical Loss and Checking Optical Parts

The MS9020D is a handy optical measuring instrument that incor-porates an LD or an LED light source and an optical power meter. It can also be used for return loss measurement. Every unit of the LD light source, LED source, the sensors and the return loss measure- ment unit is a plug-in type, for easy exchange and highest suitability for field use. The MS9020D covers 0.66 µm, 0.85 µm, 1.3 µm, and 1.55 µm 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 µm 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 steps at 3 wavelengths, so absolute values can be read directly.

Applications?

Optical fiber loss measurement When measuring optical fibers, it is convenient to provide one MS9020D each at both the near and far ends. By using switchable light source unit (MS0909A), one-touch measurement of 1.3/1.55 µm can be done. More accurate loss measurement is possible by using the modulat- ed light function. When an LD light source is used, it is possible to measure optical loss up to 67 dB.

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Optical parts performance check A light source and optical power meter are provided, and an optical parts performance check is possible at low cost.

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Optical return loss measurement Return loss of connectors or optical devices can be measured easi- ly using return loss measuring units.

Features?

Measures optical loss up to 67 dB

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Measures CW and modulated light

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Provides calibration function of 5 nm steps at 3 wavelengths

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Also measures optical return loss (0 to 40 dB)

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Operates in 3 modes; AC, rechargeable battery, and dry cells

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Various connectors

Specifications?

MS9020D (mainframe)

Unit displayW, W
(REL) , dBm, dB
(REL) selectable, 4 digits Measurement resolutionW/W
(REL) display: 0.1 to 1%, dBm/dB
(REL) display: 0.01/0.1 dB, Blanking is possible. Auto power offPower turns off automatically after 5 minutes of no adjustment Recorder output 1 V (on full-scale display), 0.316 V (on –5 dB from full-scale) Battery alarm Down-side part flickers when battery voltage goes down. Auto offsetSensor zero point is adjusted automatically. Back lightDisplay section back light can be set on and off. Averaging On and off selectable Range holdRange can be specified and set to be on and off. Reference value inputUsed to input the loss point reference value BuzzerSound when input level is higher than set reference level in 1 dB steps Wavelength sensitivitycharacteristics compensationDeviation of optical power sensor is compensated automatically in 5 nm steps. Continued on next page

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