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Anonymous users2024-02-07You only have an optical time domain reflectometer that can only measure the attenuation of the fiber and see the uniformity of the attenuation, and the dispersion cannot be tested.
As for the quality of optical cables, there are many aspects, as well as outdoor optical cables and indoor optical cables
1. The transmission performance of optical fibers, you can only measure the attenuation of optical fibers and see the uniformity of attenuation if you only have OTDR (Optical Time Domain Reflectometer), and you can't measure the rest.
2. You can't measure the geometric size of the optical fiber, such as core diameter or numerical aperture, core non-roundness, cladding non-roundness, etc.
3. Other mechanical properties of the outer cable, such as tensile strength, pressure resistance, etc., cannot be measured.
4, look at the thickness of the sheath is uneven, you only have these tools, that can only be like this, look at the appearance, see if it is beautiful or poor (now some manufacturers use very poor ** material production), look at the circle is not round, pull a section of optical cable, fold a few times (just like using an arm power stick), if the sheath at the fold is not broken, take back the outer section, twist a few times at 180 degrees, no longitudinal cracking, then even if the mechanical properties are barely okay. Check to see if there is any water-blocking material (ointment or water-blocking tape) in it, and if so, it will be qualified.
As for the optical fiber, you can only measure the one mentioned above, and there is no way to measure the others.
2. Indoor cable, 1, the optical fiber is still the same problem as above.
2. Take a look at the appearance, pull the cable skin, fold it, and see if the skin is broken, 3. Pull the tight sleeve inside the optical cable, and see if it is stuck with the outer sheath, and it will not work if it is glued together, 4. Look at the uniform and uneven sheath, which can be seen by the naked eye.
The above is used as a reference, I guess you are looking at outdoor fiber optic cables.
If it is genuine, there is generally no problem, unless it is too low (or a product of a manufacturer with a bad reputation in the industry).Manufacturers can only use poor materials to produce, but with the tools you have above, you can only look at the quality of the appearance of the material, as for the attenuation of optical fibers, people dare to use it, they must measure the attenuation at the factory.
As for how to measure the optical fiber, it is OTDR (Optical Time Domain Reflectometer), the OTDR is connected to the pigtail, and the pigtail is connected to the optical fiber, which can be connected through the V-groove (can also be welded), so that it can be measured. If you have these tools, I guess you will use them, and you know the data of the fiber, so I won't say much, (if you need it, please leave information exchange.) I am a fiber optic cable manufacturer).
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Anonymous users2024-02-06You can add a section of false fiber meter in front of the whole optical cable, and you can fuse the OTDR-pigtail-false fiber-optical cable together.
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Anonymous users2024-02-05The single-disc inspection of optical cables is to check, count, visually inspect and measure the main characteristics of optoelectronic products of optical cables and connecting equipment transported to the site. Before the optical cable is laid, it must be inspected and matched with a single disk.
The content of the single-disc inspection of the optical cable:
1. Collection of single disk data (disk data is recorded in the project completion data).
2. Retest the length of the optical cable (pay attention to the difference between the fiber length and the cable length).
3. Optical cable single disc loss measurement (three methods of determination).
4. Insulation inspection of optical cable sheath.
5. Inspection of other equipment.
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Anonymous users2024-02-04The single-disc inspection of optical cables is to check, count, visually inspect and measure the main characteristics of optoelectronic products of optical cables and connecting equipment transported to the site.
Before the optical cable is laid, it must be inspected and matched with a single disk.
The single-disc inspection of optical cables is a complex, meticulous and technical work. It has a significant impact on ensuring the construction period and construction quality of the project, and ensuring the future communication quality, economic benefits of the project, maintenance and use, and line life.
Single-disc inspection work package includes: through the inspection to confirm whether the quantity and quality of the optical cable and equipment meet the relevant requirements stipulated in the design documents or contracts.
How to measure the quality of solid relays.
If it is a three-core cable, you separate the three ends at one end without contacting, and then use a megohmmeter at the other end to see if the three are short circuited to each other, if not, you short the three ends at one end, and measure the three at the other end to see if all three are connected. You can also connect one meter pen to the center of the cable, and the other meter pen to the cable insulation skin to see the degree of insulation.
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