qsfp transceiver

Blog directory:1, the UART and RS232, RS485 relations:2, RS232 and RS485 of the difference and pin introduction3. Reference documentsThe text is as followsI. The relationship between UART and RS232 and RS485:Communication problems, and traffic is the same. Serial communication, we can use bus to analogy.Bus operation can be easily divided into two parts: 1, Station 2, the road where the station determines what (people), how to send (shift) and so on. When the car runs on the road, it is necessar

Network Interconnection device lecture Network Interconnection device Overview When connecting a computer to a computer or workstation to a server, in addition to using the connection media, you also need some intermediary devices. What are the main intermediary devices? What role does it play? This is a concern in network design and implementation. We divide commonly used connection devices into the following types: I. network transmission media interconnection Device When a network line is con

Switch Fibre ports Because the price of the switch fibre port is still very expensive, the fiber is used primarily for connecting between the core switch and the backbone switch, or for cascading between the backbone switches. It should be noted that the switch fibre ports are not stacked and can only be used for cascading. Cross-connect of fiber jumper All switch fibre ports are 2, each is a single charge. Of course, the fiber jumper must also be 2, otherwise the port will not be able to co

: 2.2. Set the computer to "automatically obtain IP address", "Automatically obtain DNS server address" click "OK": Step 3rd Logon Router 3.1. Make sure that the computer starts the router by using one of the four LAN ports connected to the router as described in the first step. 3.2. Open your computer's Internet Explorer or other browsers such as Netscape Navigator, type http://192.168.1.1/basicsetting.htm in the browser's address bar, and then enter "Note" First set up the rou

segments corresponds to the winding connection, but without welding and sealing of the outer skin, there are many high power home appliances near the contact, which produces electromagnetic interference, affect the communication quality of twisted-pair wires. Solution: The cable will be reserved at the junction cut, according to the standard production network module, problem solving. Network fault caused by lightning 3.1.3 Failure phenomenon: One to thunderstorm weather, the campus built on

Design Summary Network Office is the trend of modern enterprise development. This paper mainly expounds the function module of the transceiver management system based on B/s structure and how to use ASP and SQL Server to solve some related technologies, including the security of the system. Keywords network office; b/S structure; receipt and dispatch management system; ASP technology; security Introduction Traditional manual Office is unable to mee

CPU is going to be memory access or I/O access.The T1 state is the address state, and the processor issues the address of the memory or I/O port to be accessed. The CPU sends out a high 4-bit address via the address/status line A19/S6~A16/S3, ad15~ad0 the low 16-bit address via the address/data line. Since 8086 of the 20-bit address lines are multiplexed with the state and the data line, the address signal must be locked up in the T1 state. In the T1 state, the address latch of the CPU enables

if multiple hosts are configured, use only the first; get "hosts." Prefix, if there are multiple then use the first, then parse out hostname and port, build a Inetsocketaddress object address; Get connection timeout "Connect-timeout", set ConnectTimeout, If less than 1000 is configured, the default value of 20000 is used, the unit is MS; Gets the corresponding time "Request-timeout", sets the Requesttimeout, if the configured less than 1000, then uses the default value 20000, the unit MS; Gets

realized by using multiple circuits and packet switching connections on a single terminal. You can support business with different quality requirements, such as voice and packet data, and ensure high quality and perfect coverage. (2) High spectrum efficiency. WCDMA can efficiently use the radio spectrum. Since it uses single cell multiplexing, frequency planning is not required. The network capacity can be greatly improved by using the layered cell structure, adaptive antenna array and coherent

Software Yate) and replace it? So proceed to the next step.9. reconfigure./Configure10. In this case, two file directories, YateBTS, are required.A) Peering$ Cd/home/openbts/obts/yatebts/mbts/Peering $ makeB) TransceiverRAD1$ Cd/home/openbts/obts/yatebts/mbts/TransceiverRAD1 $ make11. Copy two files to the OpenBTS file directory.$ Cd .. $ cp./yatebts/mbts/TransceiverRAD1/transceiver-bladerf openbts/apps/$ cd openbts/apps/$ ln-sf

transmission rate (Mbps) of the cable. The Mbps is measured by the number of binary bits transmitted by the line per unit of time,MHz is the number of electrical signals on the line per unit time.Twisted Pair wires can be used in CMSA/CD-based (Carrier Sense Multiple Access/Collission Detection,Carrier-induced Multi-Channel Access/conflict detection) technology, that is, 10 BASE-T (10 Mbps) and 100 BASE-T (Mbps) Ethernet (Ethernet), specific provisions include:● The maximum length of a twisted

. LC Optical Fiber Connector, while GBIC is SC optical fiber connector. The following describes several commonly used optical fiber connectors in network engineering: ① FC Type Optical Fiber Jumper: the external reinforcement mode is a metal sleeve, and the fastening mode is a screw buckle. Generally used on the ODF side (most used on the distribution frame) ② SC-type optical Jumper: the connector connecting the GBIC optical module. Its housing is rectangular, And the fastening mode is plug-and-

MSTP addressing link load balancing and link detection topologiesFigure 11 topology shown, there are two links between the huiju switch and the Jieru switch, Huiju G0/0/1 Gigabit Port, G0/0/2 Gigabit Port, Jieru G0/0/1 Gigabit Optical port, E0/0/2 hundred Gigabit Electric port, Link1 is bare fiber, LINK2 Link uses transceiver for photoelectric conversion, transceiver for the hundred trillion.Requirements

of a large number of network cabling, high installation and maintenance costs, poor reliability, and even in some structures can not achieve cabling. With the development of sensor technology,ZigBee Digital Transmission Module communication technology and MEMS Technology, wireless sensor technology has been developed and can overcome the cabling capacity and high cost of wired sensor network, and in practical application ZigBee The wireless module has been greatly developed. Strain is an

-distance, low-speed, low-cost and low-complexity, and has been widely used in the field of near-range wireless network. It is a low power wireless personal area network protocol based on the IEEE802.15.4 standard, can operate in the free 2.4 GHz public band, the transmission rate is 100 kbps, the actual transmission distance of a single node is based on the transmit power size and application mode, in the case of no-occlusion can be achieved in the amount of up to a maximum of up to m above. Zi

serial port mode is 123. Serial Port Control register Scon (addressable) Bit sequence number D7 D6 D5 D4 D3 D2 D1 D0 Bit symbol SM0 SM1 SM2 REN TB8 RB8 TI RI Serial port operating mode SM0 SM1 Way Function description 0 0 0 Synchronous shift Register mode (typically used to extend I/O ports)

, inventory issue, linkage harvesting, linkage information query. Sales and dispatch personnel (Procurement Center) responsibilities related to functions: Z11 linkage (need for goods movement and Delivery order creation rights), manual delivery, linkage information query. In order to avoid redundancy, the query and execution create roles individually when creating a role, which avoids querying for things code in each execution role, taking into account that only the query permission is not execu

UART (Universal asynchronous transmitter ER/transmitter)General asynchronous transceiver UART is a chip used to control computers and serial devices. One thing to note is that it provides an interface to the RS-232C data terminal device so that the computer can communicate with the modem or other serial devices that use the RS-232C interface. As part of the interface, UART also provides the following functions: Converts parallel data transmitted fr

I will not go into details about the advantages of EPON and GPON. The main points are as follows: 1. Saving money. This is an absolute principle. 2. high bandwidth, with a bandwidth of 1 to 25 GB 3. High Reliability. Optical splitter can be used in the middle, and no switch is required. Why do I save money by using EPON? PreviousArticleLet's talk about saving optical fiber for the moment. Let's talk about this transceiver. The price of a 1-to-60

lasted 6, 7 rounds, still did not find the desired job. See is going to noon, I have to say, you first assign to others!Remember that day will be open from 10 o'clock to 1:30 before the end, at least set up a topic.Think of me is too impetuous, capricious and picky, in fact, the main reason is that I do not know what they want. At that time only know to do IC, but do the system or the number? Is it analog or RF? There is no concept.For fear of leaving a bad impression on the boss, after the mee