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No, glass is an insulator. Optical fibres do not conduct electricity. They provide a medium for light to travel between nodes in a network.— — — — — —understanding fiber optics layers architectureYou are confusing some things. Fiber optics uses a particular wavelength of light for signalling. WDM lets you use multiple wavelengths for separate signals, as if you had multiple fibers; each wavelength is a separate signal.SONET and ethernet are methods of framing the data on a signal, telling the other end where the data starts and stops. SONET is for circuit-switched networks, where each frame in a time period represents a different circuit. SONET was developed for the traditional circuit-switch telephone system to multiplex different calls onto a single circuit as if there were multiple circuits.Ethernet is for packet-switched networks. Ethernet frames can be encapsulated into SONET frames and de-encapsulated on the other end, or there are various ethernet on fiber standards, too, but the equipment for ethernet on fiber and SONET on fiber is very different. Either SONET or ethernet can be run over a fiber with only one signal, or you can have multiple logical links with WDM, and each wavelength looks like a separate connection.Circuit-switching is fading away in favor of packet switching, but remember that there is a huge installed base of expensive circuit-switching equipment that simply does not disappear. That is why you (can) encapsulate ethernet frames in SONET frames. In sites, e. g. data centers, you will find one of the ethernet standards because the equipment is so much cheaper than TDM equipment, and packet switching is more flexible and efficient than circuit switching— — — — — —Would it be possilble to light the dark side of a tidally locked planet using fiber optics from the right side?Yes theoretically, but it would create a dark patch on the bright side, as large as the area you are lightening.Reason for this is that an optic fiber simply transport light with almost (mind this almost, it will become important in the following period you are going to read) no attenuation. But if you want to transport X amount of light from A to B, you have to take it from A. Thus, the light you cast on 100 square meter on dark side will come from 100 square meters of the bright side.On top of that, the tenuous attenuation of those fibers will become important over the distances involved in shining the dark side. Telco usually employ amplifiers after a certain distance in order to compensate the losses. But they do not shine large surfaces. The energetic cost would be prohibitive.— — — — — —Fiber optics & stock tips.....?FNSR, LVLT - these are good companies— — — — — —How does interior lighting using fiber optics work?Well hopefully I do not miss this question completely. I've never really seen fiber optic interior lighting... But the principle of fiber optics is based on total internal reflectance. It's a phenomena observed when light is passing in something of a high refractive index and attempts to leave into something of a lower refractive index but it is less than a certain "critical" angle. Basically this means you can trap light in plastic/glass tubes if you keep the angles gradual enough. So if you point these tubes at something, voila, lighting.— — — — — —What is material dispersion in fiber optics?As pointed out fiber dispersion has two major contributions - material and waveguide dispersion even when there is only a single mode. What is that? a fiber has a core with one refractive index surrounded by a cladding of slightly lower index. Depending on the indices of core and cladding, the light wavelength and the radius of the core (assuming a very thick cladding), the resulting guided mode (assuming a single mode for simplicity) will have a propagation constant corresponding to an effective index that is somewhere between the core index and the cladding index. When the wavelength of the light varies a little both the index of the core and cladding will change (because they each are dispersive), but these changes will also result in the effective index changing. Therefore the total dispersion (the change of the effective index with wavelength has a material contribution (the refractive indices of the slightly different core and cladding indices) and a "structural" or "geometric" contribution (i.e., the fact that each wavelength "sees" a slightly different wave guiding structure). Material dispersion is always present (even when you do not have a waveguide or fiber), manipulating the waveguide dispersion allows you to engineer fibers where the zero dispersion point has been shifted, for example.Note that when you have a multimode fiber you have yet more dispersion as every supported mode has a different effective index

City of Ammon Fiber OpticsAmmon builds, owns, and operates a fiber-to-the-premises system. Ammon provides the fiber to the premises, and relies on third party ISPs to connect customers to the Internet and other services.— — — — — —How do I properly clean mid-couplers on dome joints (fiber optics)?a. Go here for a complete answer. Inspection and Cleaning Procedures for Fiber-Optic Connectionsb. That said, a few tips.-By 'dome" connectors, I assume you mean PC (SPC, UPC) Physical Contacting connectors.-You don't have to clean every connector, but you MUST INSPECT every connector. Some connectors are already clean. Because microscopes are much more expensive than cleaning materials (click tools, tape cassettes or simple wipes), people tend to clean more than they inspect. 'I clean every connector.", 'Do you inspect them?", 'uh.no".The danger is that cleaning is not 100% reliable and sometimes moves dirt onto the connector face, so if you simply clean, and don't inspect, you risk moving dirt onto the connector face. DO: The flow chart is, Inspect, if dirty, clean. Then reinspect, if clean, Connect (applies to both sides).DON'T: The flow chart is NOT, Inspect, if dirty, clean, then Connect. (NO, NO, NO.)You cannot know that cleaning 'worked" without inspecting. Yes, scopes are expensive, but they are an indispensable tool in Fiber Optics.One more tip. WAY too many people 'wet" clean everything. The cleaning tape cassettes and '1-click" cleaning tools do such a good job, that probably 90% connectors can be successfully 'dry" cleaned (not like your Blue Serge suit, just means without addition of a cleaning fluid). An effective approach is 'dry" clean 2 or 3 times, if that doesn't work (evidenced by inspection), THEN 'wet" clean 1 to 3 times til clean. If that doesn't work, replace the connector. There's some new novel cleaners based on 'sticky" materials, like a jelly or putty that 'pulls" dirt off the connector (like a clay bar on your car). I think 'sticklers" is one brand name. I don't have experience with them, but they may be cool, to. You really, really want some kind of '1-click" probe cleaner as part of your arsenal. It is the only tool that will clean a connector inside a bulkhead.The good news is that you are asking the question. If you just 'plug and pray" without cleaning, eventually, dirt on the connector will bite and potentially permanently damage your connectors.How do I properly clean mid-couplers on dome joints (fiber optics)?— — — — — —Will fiber optics eliminate all lag for online gaming?Unless your data packets are very large, transmission speed does not affect ping (or lag). Ping or lag is a function of distance and how many nodes buffer and retransmit your data packets to the destination and back. In gaming, what appears to be 'lag', can also be caused by lost or corrupted packets of data.— — — — — —where can i get fiber optics traing?Fiber Optics is a part of communication engg. If you want more of it masters , or even doctorate in the same field can be done - lots of problems are there in FOC & with every advance in each, more of problems can creep up ! .So pl . do specialize in this voluminous field & enrich it & get enriched via awards, rewards, .— — — — — —AT&T Fiber Optic (U verse) Questions?it is not something considerable. All they are doing is changing the cables that they are using to a minimum of something greater time-honored. Fiber optics is definitely greater powerful high quality than copper anyhow, so it relatively is a robust circulate to make. And confident, you could go with which cable you like.— — — — — —Awhile back, I read or saw a fiber-optic electric guitar, where the strings were fiber optic. Does this exist?Honestly I can not think that it will work because the differences in light transmission time would be extremely small. Even if something was possible to obtain, it would be a rather complex and expensive way to get some sound from a guitar, do not you think?— — — — — —why is fiber optics better than metal wire for a telephone system?Bandwidth: a fibre optic cable has a much greater capacity than a copper wire, so it is possible to send a lot more data down the former than down the latter. It's not the speed that is an issue, it's the volume. Higher bandwidth means a fibre optic cable can support a much larger number of calls / computer connections than a copper wire of the same dimensions.

RS components recently announced the launch of its free printed circuit board (PCB) design software package designspark PCB version 2. In cooperation with number one systems, the new features of designspark PCB include unique 3D visualization of PCB layout and improved database management function. New users can download the second version of the upgrade software for free at www.designspark.com/pcb, and the "Release Reminder" function in the tool will remind existing users to upgrade.Since the launch of designspark PCB 8 months ago, more than 50000 users have downloaded the software. The tool has proved to be one of the most popular free PCB design software packages available. Since the launch of the software, thousands of users have provided development opinions on the online community and information network designspark managed by RS for electronic design engineers. The second edition incorporates this information and provides users with enhanced features and functions.Designspark PCB has been strengthened in three key areas. By adding a 3D browser to the tool, engineers can see the 3D diagram of the circuit board at any stage of their design, so as to quickly evaluate the mechanical design requirements in their existing ECAD toolkit. The new database features and output graphics enable users to create and save new databases, move electronic components directly from design view to the database, and have more flexibility in reporting and printing options. Enhancements can be found in the Project menu, while new design management options include commands for angular displacement, copying, and lifting solutions. All these help users speed up design, testing and development.Mark cundle, RS Technical Marketing Manager, said: "After the first launch and successful application, we received real-time information and feedback from the designspark community about what engineers like and care about when using designspark PCB. This enabled us to quickly set priorities and develop the second version based on users' expectations of the world's most powerful free PCB design software."Martin Keenan, technical marketing engineer of designspark PCB, added: "free software tools are valued by engineers, which enables them not only to reduce costs, but also to shorten the launch time of new designs. With new 3D visualization, enhanced features and functions, designspark PCB can provide free and faster development and mobility, so as to meet the needs of our user community."

My two year old grabbed the hose from me and squirted herself directly in her face and up her nose. Now Iu2019m worried she will get a brain eating amoeba from water forced up her nose. We have city water and live in Hawaii. Would you be concerned?Probably about as worried as Anonymous should be if he's the same anonymous who asked the same thing about tap water and water from a cooler— — — — — —Kansas City Water Department BuildingThe Kansas City Water Department Building in Kansas City, Missouri is a building from 1904. It was listed on the National Register of Historic Places in 1994.— — — — — —does city water with the chemicals in it damage my lawn?Well it all depends on altitude, location/climate, this will lead to the types of bugs you have and soil/ground its on. Plus how often you mow it and if you have over/under treated it with fertilizer. The "perfect" grass is very difficult to achieve in many parts of the US and with many different types of grass. Plus when you first put grass down it may take a while to adapt to the soil and/or root itself well. But usually all-in-all grass is pretty beefy stuff and can withstand most anything with just a little bit of care and knowledge of what "it" needs specifically. I did landscaping for 3 years and some grasses in some places just can not do well....almost impossible. Yet others would grow like wildfire without anything but a good cut once a week. It really depends on too many factors to give a direct answer. One problem with the type of grass you put in is that its from Asia and it really only does well in the low eastern parts of the U.S.....not even Florida with the constant heat. But again it adapts pretty well and you should give it time and whatever you do....do not kill it with fertilizer trying to save it....too much is like poison. About the city water, this grass is well known for its resilience to acidic soil so you should be good.— — — — — —Washing hands after seeing my phobia trigger?you need to seek professional help. fyi- if you are on city water, there will be nothing coming up the drain.— — — — — —Can a city government require you to purchase city water if their water is out of compliance?You can drink bottled water if you want but it would be expensive to bathe and flush with it— — — — — —Is bottled water REALLY any better for you than your own City water from the faucet?According to pamphlets I have read, U.S. tap water is generally as healthy or sometimes healthier than bottled H2O. Some tap water may have an off taste, this can be reduced by chilling the water in the fridge. Local tap water often has to be sampled up to 100 times. As for minerals in water, it is your personal preference. For example I seen a seltzer spring water brand that claims it has the same calcium in a liter, as a glass (8 oz.) of milk— — — — — —Does anyone have experience/knowledge of La PURE Water, Inc. Whole House City Water Filtration & Conditioning?La pure was the only company who took samples and contacted my water district to get the annual water report. They also asked about static, flow pressures and gpm for my house. They calculated my usage and built a water system for my house not a unit off the shelf.— — — — — —I have a 30 gallon aquarium that I want to put fish in. I have city water and was wondering if it is ok to usetap water is ok for fish, but u should use a water conditoner like stress coat which de-chorlinates water. This is a must when using tap water. Ive been using tap water for 13 years, when it comes to water changes.— — — — — —I want to know how a good breeder handles everything, do you know?1. Just prior to whelping, the dam is isolated in her whelping box. 2. The whelping box has newspaper, and old towels for mom to nest in. No newsprint after the pups are born. I use blankets then. 3. The pups are washed with only a washcloth prior to weaning. They get a full bath prior to leaving for their new home. 4. I give Bordetella at 4 weeks, and DHPPC at 6 weeks. They are wormed at 4 weeks, as well. If I saw no worms, I take a sample to the vet's to make sure there are no more worms at about 6 weeks, and worm again at that time, if necessary. 5. I start to wean at about 4 weeks (using ground up kibble and warm water), and continue to let them nurse. 6. I gradually take the food from a mush consistency to a little firmer. They continue to nurse. 7. I offer completely dry kibble, with a shallow bowl of water at about 6 weeks. (Since mom has been gradually less challenged, she is about dried up by now). 8. I've never experienced a pup that wanted away from the litter. 9. I put pups in a towel lined laundry basket while I clean. 10. I do not let pups leave the litter before they are 8 weeks old. 11. If the weather is good, I let them play outside after 6 weeks of age. I also do not allow potential buyers to see them until after their 1st shot. And I let them exercise in an x-pen, not a cage. 12. Parvo is a virus that does not survive outside of a host animal. 13. Puppy fights are quite normal, it is the litter's way to teach each other that there is a "pecking order". If a fight becomes too intense, I will break it up, and mix the two pups in with other groups in the litter. 14. It is perfectly normal for pups to growl in the litter, as someone is trying to play the bully, and it does not get very far with the littermates. 15. I have a five page form that has to be filled out, and returned to me, before I let someone even see the pups. The form includes what breeds have been owned, what happened to the prior pets, and vet releases, so I can talk with their veterinarian, regarding how serious these people are. I have turned potential buyers away, if I do not think they are a good candidate for my breed. 16. I buy plush toys for each puppy, and they are with the pups then I send one home with each pup (unwashed to keep the smells), to help the pup acclimate to its new home. Also, they get a bag of the puppy's food that they were weaned on. Also, if they do not have city water, 2 gallons of my water. The first is used undiluted, and as the second is being used, they add their own water to fill the gallon. Of course, they get a pedigree, papers, and a bill of sale. Hope this helps you. ADD: I also sell almost all of my puppies by referral.

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1. System configuration1.1 softwareA PC with STEP7 micro / win smart software (including Modbus protocol library) installed. In this example, STEP7 micro win smart v2.0 is used.1.2 hardwareG120 is equipped with one frequency converter of cu240e-2 control unit, one asynchronous motor, one S7-200 smartplc, one standard drive-cliq cable and one twisted pair shielded cable. In this example, the firmware version v4.6 of the control unit cu240e-2 of G120 is used.Note: before using microwin software to create a project, confirm that the Modbus library file already exists.Figure 1-1 S7-200 smart interface2. Hardware wiring 2.1 cu240e-2 control unit interfaceThe terminal block of cu240e-2 control unit is shown in Figure 2-1. The RS485 interface is at the bottom of the control unit. There are five wiring terminals, from left to right. Terminal 2 is rs485p and terminal 3 is rs485n. These two terminals are used for transmitting and receiving communication data.Figure 2-1 terminal diagram of control unit2.2 G120 and S7-200 smart wiringFigure 2-2 wiring diagram of PLC and controllerS7-200 smart serves as the Modbus communication master station, and the wiring of its communication port and frequency converter slave station is shown in Figure 2-2. Terminal resistors need to be used at the head and end of the communication network. For S7-200 smart, a resistance of 120 ohms needs to be connected between communication port terminals 3 and 8. For the frequency converter, turn the cu240e-2 terminal resistance dial switch at the end of the communication network to the on position (the position is in Figure 2-1, label ⑨); For cu240e-2 in the middle position, the terminal resistance dial switch must be turned to the off position. In this example, S7-200 smart uses the CPU's own communication port to communicate with the frequency converter.3. Communication settings3.1 setting communication interfaceThis routine uses PLC Ethernet interface and drive-cliq cable to set communication interface, as shown in Figure 3-1 below.Step 1: double click communication to open the communication setting window;Step 2: select the network interface card and set it to "ICP / IP. Auto. 1", and the system will automatically collect the CPU.Figure 3-1 setting communication interface3.2 establish the connection between PC and PLCAfter selecting "network interface", the CPU is automatically searched, as shown in Figure 3-2.Step 1: after searching the CPU, select the searched CPU and click "IP address" of the CPU.Step 2: click "OK" to complete the network connection.Figure 3-2 establishing S7-200 CPU and controller connection4. Frequency converter parameter setting4.1 frequency converter address settingThe Modbus communication address of the frequency converter can be set through the bus address dial switch on the control unit, as shown in Figure 4-1. When the positions of address dial switches are off, it can also be set with parameter p2021. (Note: after changing the address, it can take effect only after power on again)Figure 4-1 address switch setting4.2 frequency converter parameter settingModbus communication can only be carried out after setting some basic communication parameters of the frequency converter, as shown in Table 4-2:Table 4-2 parameter setting of frequency converter4.3 description of G120 common registersThe common registers of G120 frequency converter are also the registers used in this example, as shown in table 4-3. For more G120 register information, see the G120 operator's manual.Table 4-3 description of common registers5. PLC programming5.1 initialization procedureInitialization module MBus using Modbus Protocol_ CTRL, initialize the CPU port of S7-200 smart, which is dedicated to MODBUS master station communication, as shown in Figure 5-1.Figure 5-1 initializationFunction block Description:Note: the "function block description" here and below only introduces the main pin functions in the function block. For the pin functions not described, please refer to the help document of STEP7 micro win smart v2.0 software.EN enable: it must be ensured that each scanning cycle is enabled (sm0.0 is used)Mode mode: when it is 1, the Modbus protocol function is enabled; when it is 0, it is restored to the system PPI Protocol. Baud baud rate: the supported communication baud rate is 4800960019200, and 9600 is set here. Parity verification: verification mode selection (G120 adopts even verification)0 = no verification1 = odd comparison test2 = even comparisonPort port: set the physical communication port (0 = RS-485 integrated in the CPU, 1 = RS-485 or RS-232 on the optional CM01 signal board).Timeout: the time that the master station waits for the response from the slave station, in milliseconds. The typical setting value is 1000 milliseconds (1 second), and the allowable setting range is 1-32767. Note: this value must be set large enough to ensure that the slave station has time response.Done bit: after initialization, this bit will be automatically set to 1.Error: initialization error code.5.2 master station read / write function block5.2.1 write control wordFigure 5-2 write control wordFunction block Description:Note: the "function block description" here and below only introduces the main pin functions in the function block. For the pin functions not described, please refer to the help document of STEP7 micro win smart v2.0 software.EN enable: only one read-write function (i.e. mbus_msg) can be enabled at the same time. Note: G120 only operates on one holding register for write instructions at the same time; 125 holding registers are allowed to be operated at the same time for read instructions.First read / write request bit: each new read / write request must be triggered by a pulse.Slave slave address: selectable range 1-247RW request mode: 0 = read, 1 = writeCount data number: the number of data (bits or words) for communication. Note: the maximum amount of data read / written by MODBUS master station is 120 words (referring to each mbus_msg instruction).Dataptr data pointer:If it is a read instruction, the read back data is placed in this data area;2. If it is a write instruction, the written data is placed in this data area.Done completion bit: read / write function completion bit.Error code: the error code is valid only when the done bit is 1.Common control words:047e: preparation for operation047f: forward start0c7f: reverse start04fe: fault confirmation5.2.2 write speed settingFigure 5-3 write speed value5.2.3 read status word and actual speed valueFigure 5-4 read status word 1 and actual speed value5.2.4 read ramp timeFigure 5-5 reading parameters p1120 and p11215.2.5 write ramp down timeFigure 5-6 write parameter p11216. Allocate inventory storageBefore compiling the program, first assign the available global V memory address to the Modbus library, as shown in Figure 6-1.Step 1: select "program block" - > "library", right-click and select "inventory storage area";Step 2: click "suggested address" and select the address of V memory;Step 3: click "OK" to exit.Figure 6-1 allocation of inventory storage area7. Debugging programAfter editing the program, debug the program, as shown in Figure 7-1 below.Step 1: click "save" to save the edited program;Step 2: click "compile" to compile the program;Step 3: click "download" to download the program to the CPU of PLC; step 4: click "run" to start the program.Figure 7-1 commissioning procedure8. Monitoring status tableThrough the monitoring status table, you can modify the process data and the change status of monitoring process data, as shown in Figure 8-1.Figure 8-1 status tableControl word: vw100 = 16#047f indicates that the start command has been given.Status word: vw300 = 16#ef37 indicates the status of the frequency converter, see r0052.Main setting value: vw200 = 16#1000 indicates that the speed setting value has been given, and 16#0-4000 corresponds to the value of speed 0-p2000.Actual speed value: vw302 = 16#1000 indicates that the actual speed of the motor has run to 375 rpm. Ramp rise time: vw400 = 1000. From the register list, we can see that the calibration coefficient of the register of 40322 is 100, so parameter p1120 = 1000 / 100 = 10.Ramp down time: vw402 = 2000, the read down time; vw500 = 2000, the set down time; vw402 = vw500, indicating that the write instruction has taken effect. From the register list, you can see that the calibration coefficient of the register of 40323 is 100, so the parameter p1121 = 2000 / 100 = 20.9. Modbus error codesDone completion bit: the completion bit of Modbus function block, which is used to determine whether the operation of the function block is completed;Error code: the error code is valid only when the done bit is 1. The Modbus error code and its meaning are shown in table 9-1.Table 9-1 MODBUS error codes

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Guangzhou House Empery Co.,Ltd gives customers the option to extend the warranty of Steel Door Series. In this way, we hope our customers will feel more comfortable with their orders. But please note that from Chinese manufacturers, the warranty cost is usually included in the price of the product whereas an extended warranty costs extra and is sold separately. You shall consider whether the product will require repair and the possible cost of such repairs. It is suggested that customers make a decision at the time of purchase, or within a few more days or weeks to return to us and purchase the extension. With the powerful predominance in manufacturing capability, DIGAH is a prestigious company with high credibility and recognization. The wooden wardrobe is one of the main products of DIGAH. The manufacturing process of DIGAH bedroom door lock covers several few stages. They are mainly production pattern making, pattern design, fabric sourcing, fabric pre-drinking, shrinkage, grading, layout, cutting, sewing, and ironing. Combine fashion and practicability together to make your space unique. This product is not prone to any form of fracture. Its high-performance materials make it withstand extreme conditions such as cold and hot temperatures that would cause deformation. Feel the beauty of home life.We are committed to tackling the challenges of climate change in our own manufacturing operations and working with customers to improve social and environmental sustainability. Get info!