Is carpentry a manual work
Publish: 2021-05-09 22:38:44
1. About 600 yuan
please take it, thank you!
please take it, thank you!
2. The use of optical power meter should be combined with the light source. If you want to know how many DB the light from the light source is, use the a end of a pigtail to connect the light source and the B end to connect the optical power meter. The value displayed in the optical power meter is how many DB the light from the light source is. Generally, the light from the light source is about 7 dB
it is worth noting that the light source and the optical power meter should choose the same wavelength test, for example, the light source should choose 1310nm, and the optical power meter should choose the same wavelength test
however, in case of optical cable failure, because the equipment is still emitting light, OTDR is generally not used for testing. It is necessary to pay attention to the same light emitted by the equipment and OTDR, which may damage the equipment or OTDR. Optical power meter should be used for testing. OTDR generally tests the spare fiber core, because it mainly depends on the quality of the fiber core in use, so a tail fiber should be connected to the optical power meter and the fiber core in use first, See if it can receive light, and how many dB are received
generally, if the base station is less than 36dB or smaller, it will reach the maximum. If it is a general repeater, it will need about 10 dB
if monitoring, fiber-optic Internet access, etc. generally need data, it should be even smaller, for fear of losing data
if you buy a light source power meter, it is recommended to buy 3M.
it is worth noting that the light source and the optical power meter should choose the same wavelength test, for example, the light source should choose 1310nm, and the optical power meter should choose the same wavelength test
however, in case of optical cable failure, because the equipment is still emitting light, OTDR is generally not used for testing. It is necessary to pay attention to the same light emitted by the equipment and OTDR, which may damage the equipment or OTDR. Optical power meter should be used for testing. OTDR generally tests the spare fiber core, because it mainly depends on the quality of the fiber core in use, so a tail fiber should be connected to the optical power meter and the fiber core in use first, See if it can receive light, and how many dB are received
generally, if the base station is less than 36dB or smaller, it will reach the maximum. If it is a general repeater, it will need about 10 dB
if monitoring, fiber-optic Internet access, etc. generally need data, it should be even smaller, for fear of losing data
if you buy a light source power meter, it is recommended to buy 3M.
3. The brightness of xenon lamp is much better than that of halogen light source.
the brightness of halogen cold light source is low e to its yellow light.
if the endoscope is connected with the light source through the guide beam, then the focus can be observed directly by the endoscope with eyes - the brightness of halogen lamp is lower than that of xenon lamp.
however, if it is observed by camera or monitor, the brightness of xenon lamp is strong, The color of the image may be slightly distorted, but adjusting the color of the monitor can make up for it. The xenon lamp is better than
personal experience, for reference only
the brightness of halogen cold light source is low e to its yellow light.
if the endoscope is connected with the light source through the guide beam, then the focus can be observed directly by the endoscope with eyes - the brightness of halogen lamp is lower than that of xenon lamp.
however, if it is observed by camera or monitor, the brightness of xenon lamp is strong, The color of the image may be slightly distorted, but adjusting the color of the monitor can make up for it. The xenon lamp is better than
personal experience, for reference only
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