Computer is connected to the VGA line fuzzy water ripple solution

Using the VGA line is connected with the display in general there will be two more common phenomenon, is a trailing screen, fuzzy, is a picture of water ripple, jitter. These two cases are typical phenomena due to the VGA line without the use of shielding material transmission signal interference.

For the performance of the right edge of the display character of fuzzy, there is ghosting, the majority are caused by the wire rod quality, VGA is an analog signal, the wire impedance changes and do not match will produce a reflection signal in the transmission line, the signal will be at the sending end and receiving end return shocks, the reflected signals will be in superposition the VGA transmission signal normal caused tailing phenomenon.

Solution: because it is the quality problem of VGA wire line, therefore can replace the good quality of the VGA line, it is best to use pure copper tape shielding, magnetic VGA line.

These four phenomena are due to the interference caused by the interference, caused by many reasons, wire shielding is not good interference effects of VGA signal transmission, signal sending and receiving end ground potential difference caused by interference. The VGA interface circuit of computer motherboard wave filter capacitor bad, lead to filter out the interference signal.

Solution: use a roll of foil winding up will all VGA line cable, and then use the transparent adhesive tape to fix the wound again, tin, will use it as a shielding material, the effect is very good.