How much can a gigabit fiber optic transceiver bear? -28 dbm.

Attenuation is closely related to ACR, and a small attenuation will contribute to the improvement of ACR. The attenuation of the cable depends on the structure, length, ambient temperature and other factors of the cable. Measures to reduce attenuation include:

a) The total length of horizontal cables and work area cables shall not exceed 100 meters. According to the attenuation formula, the longer the cable, the greater the attenuation.

b) Avoid laying long-distance cables in metal conduits and near any other conductor surfaces as much as possible, the result will be an additional 2%/3% attenuation. In addition, high temperature will also seriously increase the attenuation. Among the characteristics of all wiring systems, crosstalk has the greatest impact on the performance of the network. It affects the following parameters: NEXT, Power sum, ACR, etc. Reducing the crosstalk value is beneficial to the improvement of the above parameters.

The specific measures to reduce crosstalk are:

a) When making the wire pair connection, it should be connected in accordance with the TIA-568B standard, otherwise the cross-winding connection will cause serious crosstalk. If NEXT fails the test, not only that, but a series of parameters related to NEXT, such as ACR, will also fail the test due to the twisting of the wire pairs, that is to say, the performance of the originally qualified cable will be poor due to the twisting connection. .

b) When disconnecting the cable pair for connection or installing it on the patch panel, shorten the non-twisted pair part as much as possible, and the longest can not exceed 13mm.

In addition, in addition to the above methods, when installing cables, care should be taken to handle the cables, and the cables should not be overstressed. The bending radius of the cables should meet the specifications of the cable manufacturer. Only in this way can the structure of the cables be maintained, thereby contributing to the above Improvement of technical indicators. This is also the basic requirement for construction.