2014年9月29日星期一

Using yourself infinite wisdom of the VGA cable

Unlimited extension of yourself making clever use of the network cable extension cord Decrease font Increase font Home in a variety of computer, digital, home appliances can be connected Barrier terminal block together to use, but Wisdom vga cable equipment in the bedroom, den, some also in the living room, they are moving up on the very trouble, use an extension cord it, even the most long extension cords are out of reach. Fortunately, when the home renovation embedded a 15 pin vga cable, then the equipment of each room you can use it to "connect" the. VGA extension cable such as televisions, projectors and other video devices are generally connected via VGA and computers, we can modify the network cable into a long vga extension cable, so do not move the computer, you can watch the content on the bedroom computer in the living room . First, use a knife to cut open the cable sheath, length of about 3cm, revealing eight different colors of tiny wires. Use wire strippers to each thin strip of insulation around 1cm. Then deal with the other end of the network cable using the same method. Got a pair of detachable VGA adapter, you need to select the appropriate male or female depending on the interface PCB Screw Terminal Block type of device. The next step is welded, open VGA connector housing, a control pin connection diagram will correspond to a small line of welding cable and VGA connector. Note welding wire well insulated, do not short-circuited. After the welding is good, then close the lid on the joint, you can achieve a long-distance transmission of video signals. If your USB device is relatively large, inconvenient to move, but also a shorter USB cable, you can also use the network cable to create a USB extension cable. First cut the original USB cable is designed to get two USB connectors. Respectively the network cable and the USB connector cable peel, due to the small USB cable is only 4, while cable has eight, then the extra white line network cable can be cut off. Before welding in order to put in the back of a small shrink tube insulation.

2014年9月22日星期一

HDMI sources

HDMI from DVI interface technology, they are primarily based on Silicon Image's TMDS signal transmission technology as the core, which is why the HDMI interface and DVI interface adapter PCB Screw Terminal Block conversion through reason. Silicon Image's HDMI eight sponsors are the only IC design and manufacturing company, is a leader in the field of high-speed serial data transmission technology, because the TMDS signal transmission technology to be mentioned below is that they developed, so here is a little mention it. TMDS (Transition Minimized Differential Signaling) is also known as Transition Minimized Differential Signaling refers to the XOR and XNOR logic algorithms, such as converting the raw signal data into 10, after the first 8 data from the original signal obtained by the operation, after 9 indicates operation mode corresponding to the first 10 to a DC balance (DC-balanced, that is to ensure that the channel encoding process in the DC offset is zero, the level conversion achieves matching between different logical Dvi to hdmi adapter interfaces) conversion data transmission to the differential transmission mode. This algorithm is such that the upper punch and the lower transition of the transmission signal offset is small, tends to be DC-balanced data transmission, the signal transmission line for the electromagnetic interference is reduced to improve the speed and reliability of signal transmission.

2014年9月15日星期一

What is a vga cable

Card information will eventually be processed output to the monitor, video card output connector is a bridge between the computer and the monitor, which is responsible for the display micro usb 2.0 cable output corresponding to the image signal. CRT monitors on the design and manufacture of reasons, can only receive analog signal input, which requires graphics input analog signal. vga cable analog signal is output on the graphics interface, VGA (Video Graphics Array) port, also called D-Sub connector. Although the LCD monitor can receive digital signals directly, but vga to hdmi cable many low-end products in order to match with the VGA interface card, which uses the VGA connector. VGA interface is a D-type interface, there are above 15-pin space, divided into three rows, each row of five. VGA graphics card interface is the most widely used type of interface, the vast majority of graphics cards with such an interface

2014年9月10日星期三

DVI and HDMI Mistakes

1 Myth: DVI and two HDMI interfaces quality vary greatly Under the existing circumstances, the same resolution, DVI and HDMI picture quality was no significant difference between the two interfaces, but with the development of the HDMI interface than DVI interface can provide more functionality. 2, Myth: HDMI interface can transmit hdmi wall plate audio signals, DVI can transmit audio signals DVI pin from the above definition can be found, there is no use of empty data pins. As 4,5,12,13,20,21 these pins, graphics card makers can use these empty needle transmission of audio signals. However, due to the DVI standard does not define a special pin to transmit crossover ethernet cable audio signals, so this is something the manufacturers themselves do set standards and interoperability between different vendors are not common. Also, because most manufacturers prefer to use advanced HDMI interface to transmit audio, DVI can transmit audio function was abandoned.

2014年9月1日星期一

How to prevent WISDOM vga cable fixed bad?

Interchangeability checking is a dynamic examination. It requires the same series matching plug and socket connections can be mated with each other, from which to discover whether there is due to insulator, contacts and other parts size tolerance, missing parts or assembly equipment is not in place and other causes can not be plugged together, positioning and locking even under the effect caused by the disintegration of the rotational force. Another role of interchangeability checking is threaded, bayonet and other plug connection can discover whether there is an impact insulation metal remnants. Therefore, some of the important uses of WISDOM vga cable to carry out the project should be 100% inspection to avoid deadly failure of such a major Vga extension cable accident. Resistance is a moment to check the structural reliability assessment WISDOM vga cable very effective screening method. Such as the military standard MIL-L-39012 standards. According to the standard sampling tests should each batch of samples are resistant to torque checks, to detect problems. Pass measure crimping wires, electrical equipment often found vga cable at the core crimp individual wire feeding is not in place, or to the position after not lock, contact unreliable. Analyze the causes of individual thread mounting holes at the burr or dirt stuck. Particularly the use of electrical equipment plant has been installed to the last few holes of a plug seat, found the flaw after the other hole had been installed crimp unloaded one by one, to replace the plugs and sockets. In addition, due to the wire diameter and aperture selection crimp mismatch, or crimping process due to operator error, but also cause accidents crimp terminal is not strong. For this reason, the production plant before the finished product to plug (seat) for delivery through the sample were measured for all mounting holes, that is handling the tool will have a pin or socket crimp wire simulation to bits, check whether locked. Depending on the product technical conditions for crimping wires by checking the root pull-off force.