E02 What does it mean that the smart card fails to communicate in tiger-tiger communication, and then can't see the program?

If E02 smart card communication fails, it is a bad contact between the card and the set-top box. Turn off the set-top box, pull out the card, wipe the chip with a clean paper towel, insert the card and restart.

The speed of network speed is related to the network cable.

First of all, the network cable is the transmission carrier of network data, and the type of the network cable itself determines the highest transmission rate that the network cable can achieve. At present, the network cables on the market can basically reach the transmission rate above 100M, but sometimes we will find that even if the network broadband of 200M is turned on, we will not obviously feel the change of the network speed. This is because the network cable in your home may be a super-category 5 network cable, and the highest bandwidth of the super-category 5 network cable can only reach 150M.

Maximum broadband frequency of common network cables:

The highest broadband of the five-class network cable can reach 100M.

The maximum broadband of super-Category 5 network cable can reach 150M.

The maximum broadband of six types of network cables can reach 250M m.

The maximum broadband of super class 6 network cable can reach 500M m. ..

Secondly, in addition to the type of network cable, the length of network cable will also affect the speed of network speed. Too long network cable will lead to signal attenuation due to distance, and there will be more interference in the transmission process, such as encountering strong electrical equipment on the way, so it is easier for too long network cable to get stuck and report errors when transmitting in the network. And whenever we find that the computer displays an error, the computer will automatically send an error report. In order to correct the error, the data source has to be retransmitted, which gives us the feeling that the network speed is slow.

Finally, the aging and damage of the network cable caused by natural and man-made reasons will also affect the network speed. For example, if the network cable is used in the sun for too long and the copper wire is broken, the network speed will be obviously affected. For example, inferior network cable, thin copper cable and poor plastic pe material outside are all reasons for the slow network speed.