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The difference between Gbic and SFP

The SFP is the abbreviation for the small FORM pluggable and can be easily understood as an upgraded version of the Gbic. The SFP module is half the size of the Gbic module, and can be configured with more than one port number on the same panel. The other features of the SFP module are basic and gbic consistent. Some switch vendors call the SFP module a miniaturized GBIC (mini-gbic). The SFP module is half the size of the Gbic module, and can be configured with more than one port number on the s

Java generates XML indentation and newline __java

resultxml = new Streamresult ( New FileOutputStream ("E://cities.xml")); StringWriter writerstr = new StringWriter (); Saxtransformerfactory SFF = (saxtransformerfactory) saxtransformerfactory.newinstance (); Transformerhandler th = Sff.newtransformerhandler (); Transformer Transformer = Th.gettransformer (); Transformer.setoutputproperty (outputkeys.encoding, "UTF-8"); Th.setresult (Resultxml); Th.startdocument (); Attributesimpl atTR = new Attribut

Design of ONU and transceiver module in E-pon

reaching olt varies, and the receiving part of the Olt is abrupt and high dynamic range. e) Due to the ONU placed in the client, it requires ONU photoelectric integrated module high reliability, low power consumption, low cost. 3.ONU Optical Transceiver Integrated Module design A) Structural design To meet the above requirements, the structure of ONU Optical transceiver module adopts 2*6 pin with tail fiber SFF (Small Form Factor, small external

Create an xml file using androidsax

output) {String xmlStr = null; try {// used to generate an XML file // The Object implementing this interface contains the information required to build the conversion Result tree Result resultXml = new StreamResult (output ); // used to obtain the XML string format // A response stream, which can be used to collect the output in the string buffer to construct the string StringWriter writerStr = new StringWriter (); // Information required to build the conversion result tree. Result resultStr =

DSB (bilateral band) modulation

The clear all;%% DSB modulation% DSB (bilateral band) simply multiplies the modulated signal m (t) and the carrier signal cos (WT) to dt=1/800; T = $; The total time of the% sample. Spectral resolution (DF=1/T). t = 0:DT:T-DT;FM = 2; % modulated signal frequency, Unit KHZFC = 20; The frequency of the% carrier signal, Unit khzm = cos (2*pi*fm*t); % modulated signal s = m.*cos (2*pi*fc*t); %DSB modulated signal [F,SF] = T2F (t,s), figure (1) plot (t,s), Axis ([0,1,-1,1]), figure (2) plot (F,abs (

How do I enable the Dell Computer From UEFI PXE?

How do I enable the Dell Computer From PXE? ? Lander Zhang focuses on On-Demand IT infrastructure O M services for foreign companies, and IT helpdesk hands-on training practitionersHttp://blog.51cto.com/lander Problem description Recently, I am working on it standardization for more than 100 computers of a foreign company customer. The company has determined the model as Dell Elastic Compute service 7370.And the Dell poweredge 5050 SFF. The lapt

How to clear CMOS settings

Method One, remove the CMOS power supply, static 10 minutes or so, re-loaded can be. Method Two, clear the password (password) method. Evo d310/d510 Disconnect the power, click the Yellow Tongue button on the motherboard near the CMOS battery the motherboard has a 2-pin jumper near the CMOS battery, unplug the jumper and power it off, then turn the jumper back on to the Evo D320 motherboard with a yellow tongue 3-pin jumper (1-2 normal 2-3 Clear CMOS) Unplug a green 2-pin jumper on the motherbo

Use Mass Storage class as a driver-free USB device.

=USB_CLASS_PER_INTERFACE,.idVendor =cpu_to_le16(DRIVER_VENDOR_NUM),.idProduct =cpu_to_le16(DRIVER_PRODUCT_NUM),.bNumConfigurations =1,}; There is nothing special about the device descriptor, because the PC-side USB driver corresponds to the device interface and the Mass Storage Class corresponds to the interface descriptor. 2) interface Descriptor /* SCSI device types */#define TYPE_DISK0x00#define TYPE_CDROM0x05/* USB protocol value = the transport method */#define USB_PR_CBI0x00/* Control/Bul

SAS expander and the code implementation in Linux

uses the routing mechanism when performing progressive data or command forwarding. Route data packets based on the SAS address of each target. Supported protocols: A serial SCSI protocol (SSP)B Serial ATA tunneled protocol (STP)C serial Management Protocol (SMP)D SAS protocol, described in the Serial Attached SCSI (SAS) standard, revision 15aE sata, as defined in the Serial ATA: High Speed serialized at Attachment specification, Version 2.5F SATA II H SFF

Causes of Optical Fiber failure and Solutions

distribution frame, check the end plane, and re-connect the adapter. The average time of this process is about 10 minutes. Even so, it is hoped that the installation personnel will not accidentally touch the Optical Cable Junction to cause greater damage to the Optical Cable Junction. The most effective way to check the optical connection surface is to use a video magnifier. Video magnifiers can be directly inserted into the distribution frame and the interface of the device. It saves a lot of

Abbreviation of Electronic Computer

contact cartridge, single edge contact card box) Sepp (single edge processor package, single edge processor package) Shallow-Trench Isolation (shallow isolation) SIMD (Single Instruction Multiple Data, single command multiple data streams) Sio2f (fluorided silicon oxide, dioxysilicon fluoride) SMI (System Management Interrupt, System Management interrupted) SMM (system management mode, System Management Mode) SMP (symmetric Ric multi-processing, Symmetric Multi-processing architecture) SMT (sim

Server related noun explanation

PDU The Power Distribution Unit PDU (Power Distribution unit) is an outlet for cabinet-mounted power dispensers with power distribution and management capabilities, and is a connecting device that transports power to cabinets, servers, and data centers . XDP starting with Intel Core CPU, with the enhancement of debugging complexity, on the basis of ITP, Intel defines a new debug interface called XDP, (EXtend debug port), the standard package mode is 60Pin, Several different types of

SES2 LED Control

index and the disk slot, in order to achieve disk positioning.(2) How to realize control led correct alarmAccording to the author's use of the LSISASXX40 Series Expander Manual, SFF-8485 and other specifications and hardware manuals, you can see the actual use of the Drivebay there are two LEDs, the red one is used as status, The green one is used to indicate activity. Where the activityled default mode of operation is as long as the online green is

Create an xml file using androidsax

output) {String xmlStr = null; try {// used to generate an XML file // The Object implementing this interface contains the information required to build the conversion Result tree Result resultXml = new StreamResult (output ); // It is used to obtain the XML string format // A response stream, which can be used to collect the output in the string buffer to construct the string StringWriter writer Str = new StringWriter (); // information required to build the conversion result tree. Result resu

UV 11181 Probability | Given (Probability dp)

, sizeof(t))#define ssf(n) scanf("%s", n)#define sf(n) scanf("%d", n)#define sff(a,b) scanf("%d %d", a, b)#define sfff(a,b,c) scanf("%d %d %d", a, b, c)#define pf printf#define bug pf("Hi\n")using namespace std;#define INF 0x3f3f3f3f#define N 25double ans[N];double p[N];int n,r;double dfs(int pos,int left,double pp){ if(pos>n) return left==0 ? pp : 0; double sum=0; if(left){ sum+=dfs(pos+1,left-1,pp*p[pos]); ans[pos]+=sum;} sum+=dfs(pos+1,left,pp*(1-p

In Android development try not to use the Chinese path of the problem detailed _android

In the development process found that some software for Chinese path support is not good, if the use of Uri.fromfile to convert Chinese path to the URI, some software may not be recognized to cause abnormal function, known to have two applications: 1, Tencent Weibo sharing function; 2. Cool pie D530 down with a system camera to take photos. If you want to use the Chinese path, you can use the following method: String path = Getcameratempfilepath (),

HP d2x00 SAS Storage usage

The most recent project to do Blade server is to use HP D2600 SAS storage. Although it is very simple storage, but because the price is much lower than the P4x00 series SAN storage, it should be said that the scope of use is relatively broad. Of course, some people say this is not comparable, for large enterprises, I fully agree. But for ordinary small and medium-sized enterprises, P4X00 series is a standard SAN, the price is indeed a little expensive, and small and medium-sized applications are

Progress of optoelectronic devices in automatic switched optical networks

metropolitan area network and access network is also developed from duplex SC type to the SFF module of smaller package. Compared with the Duplex SC package, it reduces the size of the disk by 1/2. In the light amplifier aspect, the new EDFA module size only 7cm′9cm′1.2cm (long is the width is high), but can provide the 24dB gain and the 15dBm power output. Modularity has further facilitated the progress of micro-encapsulation lasers and refrigeratio

Ado. NET Database Instance Tutorial

OleDBConnection ("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=e:\sff\site\db\users.mdb") Of course, you can also use the specific connection method as a variable, after connecting the database, you must open the database: objConn.Open() In this way, you can use the database, generally at the end, we all request to close the database connection: objConn.Close() objConn=Nothing Command Once you have connected the database, you can send commands

HDU 3943 K-th Nya Number (Digital dp + binary)

HDU 3943 K-th Nya Number (Digital dp + binary) Problem Description Arcueid likes nya number very much. A nya number is the number which has exactly X fours and Y sevens (If X = 2 and Y = 3, 172441277 and 47770142 are nya numbers. but 14777 is not a nya number, because it has only 1 four ). Now, Arcueid wants to know the K-th nya number which is greater than P and not greater than Q. Input The first line contains a positive integer T (T The second line contains 4 non-negative integers: P, Q, X a

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