The frequency / transmission speed has increased very rapidly over the past 10 years . The speed has increased from 0.1 Gbps to a speed that has now exceeded 10 Gbps , and is developing to a higher speed. ERNI (Ernie) Singapore's marketing manager Xu Yongfeng March during the Munich Shanghai Electronics Show, said: "In the fast frequency growth conditions, connector solutions also continued to emerge."
If the transmission speed is around 1Gbps , you can also use a 2mm hard metric connector; if it is applied at 2.5Gbps , the connector can also use a differentially shielded 2mm product; but if it is transmitted to 5Gbps , you need to use a special 2mm hard metric pressure fit connector; If you want to 10Gbps, ERmet 0XT necessary to use an optical fiber or a program such as backplanes ERNI company; 40Gbps solutions use fiber (FIG. 1).
Picture 1 Â Existing high-speed connection solutions
5Gbps connection plan
Connector solutions with a speed of 5Gbps , a trace length of 600mm , and a PCB material of FR4 are more popular. In such high-speed circuit integration, the influence of connectors cannot be underestimated. From the eye diagram, if the signal is transmitted through the medium, the maximum eye diagram can reach about 46% ; if it is transmitted through the medium and the two connectors, the entire eye diagram is only 13% .
It can be seen that the connector becomes the bottleneck of high-speed design at 5Gbps . The frequency response, impedance, crosstalk, time lag, propagation delay, etc. of the connector are all fixed factors; the variable factors are: the material of the PCB board can be considered to use a low-loss medium, in terms of PCB through-hole design alternative embodiments (Alternate) of the drill holes, may also be coupled differential traces.
From the interface of the connector to the PCB , the user can consider the noise of routing, stubbing , and footprint , and must increase the counter pad and the shape of the trace.
These are all passive component considerations. If it is necessary to further increase the speed of data transmission, the trace length is also very long. You can consider increasing the speed or distance through semiconductor active devices. For example, you can use the equalization method, pre-amplification method, or encoding method.
From the customer's point of view, there are also many requirements for high-speed connectors, such as differential high-speed performance; excellent pins and simple routing; also hope to have a strong joint; at the same time to achieve efficient production to reduce costs, and many more.
ERNI 's solution
The ERmet ZD connector of the German ERNI Group is one of the representative products of 2mm HM (Hard Metric , hard metric ) connectors. It is specially designed for high-speed differential applications, with simple wiring, and cables optimized for high-speed applications. Wide and trace space, support speeds above 5.0Gbps .
In order to improve the compatibility of ERmet ZD , ERNI and the connector company Tyco have carried out strategic cooperation to ensure full compatibility on ERmet ZD .
ERmet ZD also adopted a number of international standards: PICMG 3.0 AdvancedTCA high-speed communication device structure, with up to five ERmet ZD connectors region as the data transmission speed connection element; also means the VITA standard ERmet ZD selected as the latest serial computation system High-speed connector of VITA 34 .
With the popularity of LED outdoor screen, it is more and more used for lighting and store layout, becoming a beautiful scenery line in modern metropolis.
SMD Outdoor Fixed LED Screen features:
1. Strong visual impact, dynamic picture and sound, all-round let the audience feel, effectively transmit advertising information to guide consumption. In the face of overwhelming advertising, memory limitations and unlimited information dissemination, the use of Led Display has become a scarce resource.
2. According to the shape of the wall, it can be straight or curved. Shape diversity creates more personalization and strong visual impact;
3. The credibility of the audience is high. Compared with the rejection and distrust of the advertising flyers artificially distributed on the street, the application of LED display makes the audience more active and passive. It can avoid the help barriers caused by the conscious active avoidance of the advertising audience, and greatly improve the credibility and promotion of the Led Screen advertising content.
4. Accurate advertising, the original extensive advertising effect is not good, resulting in waste, so it is more product content to meet the needs of the masses, hot news, hot TV and movies can be used for reference, to control the market heat and laws freely.
Product structure: Outdoor Led Display mainly consists of screen body, control system, heat dissipation system and structure. The control mode includes remote control and field control, timing switch, etc.
SMD Outdoor Fixed LED Screen
Waterproof Led Wall Screen,Outdoor Fixed Install Led Screen,Smd Outdoor Fixed Advertising Led Display,Outdoor High Definition Smd Led Display
Shenzhen Vision Display Technology Co,.LTD , https://www.ledvdi.com