How to choose fiber test instrument
optical power meter: used for measuring the optical power or by a fiber optical power relative loss. In the fiber optic equipment system, optical power measurement is a basic of zui. Very like the multimeter, electronics in optical measurement, optical power meter is commonly used heavy duty table, fiber technicians should be a hand. By measuring the power of the transmitting terminal machine or optical network, an optical power meter can evaluate the performance of the light end equipment. Combinations of light power meter and stability of light source, is able to measure the connection loss, continuity test, and help to evaluate quality of fiber optic link transmission.
a stable light source, optical system known to launch power and wavelength of the light. Stable light source and optical power meter together, can measure fiber optical loss of the system. On the ready-made optical fiber system, usually also can be the sender of the system machine as a stable light source. If the machine can't work or not, you will need to separate a stable light source. Stability of the wavelength of light source shall conform to the system transceiver wavelengths as much as possible. In the system after the installation, often need to measure end-to-end loss, in order to determine the coupling loss whether meet the design requirements, such as: measure the connector, point loss and optical loss of ontology.
light multimeter: used to measure the optical power loss in the fiber link. There are two kinds of optical multimeter:
1, by an independent optical power meter, and stability of light source.
2, optical power meter and stable light source combined as one of the integrated testing system.
in short distance LAN ( LAN） Distance within walking or talking, the endpoint and technicians can be combined in any end successfully use economy optical multimeter, end use optical power meter using stable light source at the other end. For long-distance network system, the combination of the technical personnel should be in each end equipment complete or integrated optical multimeter.
when choosing instrument, temperature may be zui strict standards. Bellcore recommend portable devices should be - at the scene 18℃（ No humidity control) To 50 ℃ ( 95% humidity)
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