Deck Light

Deck Light

Simple lined and graceful built, deck light have an appealing appearance styled and formed on diversity and variety. Deck lights are appealing when they’re installed on district, garden on the post.Very easy to be installed and maintained, deck light consume only a small amount of electricity. Made out from stainless steel,aluminum,iron,deck light further strengthened its capability by electrostatic powdering which is a kind technology that under electrostatic interaction, pigments are drawn on the surface of the workpiece uniformly to form a smooth,shinning coating to resist corrosion and to achieve an effect of certain colored beautification. The adhesive force,powdering effect,corrosion and aging resistant effect under electrostatic powdering  of pigment powder is normally stronger than lacquering and cost is normally low.Deck lights are normally designed on four screw hole basis, with only four screws to fix the light on a flat surface firmly.

Landscape light

As an integral part of modern scenery,landscape light itself is an ornamentation,it stressed the artistic lighting according and harmonizing with historical culture,ambient atmosphere. Landscape light fabricate an appealing scene by its varied modelling, heterogeneous lighting color and brightness. For example,a red lantern landscape light brings happiness to the square,a green coconut landscape light makes a scene of tropic.Landscape light used in the scenery places such as square,residential area,public green field etc.

Wall Light

Wall light is an assistant lighting fixture mounted on wall. Equipped with ivory-white glass shade generally,wall light often powered 15-40W luminaire. Elegant and harmonious,wall light can decorate the surroundings  gracefully,sumptuously,in this way,a situation  of wedding atmosphere should be the most suitable place for its application.The species and types of wall light varies in general ceiling light,color-changing wall light,bed top wall light,and mirror front wall lights etc.

Balcony,staircase,corridor,bedroom etc. are the normal places wall lights are mounted on.Color changing wall lights are for holiday,and happy events.Bed top wall lights are installed on the upper left corner of bed,the head of light can be turned to all directions,the light is concentrated for reading.Mirror front wall lights are installed nearby the mirror in the washing room in most cases.

Wall lights should be installed 1.8 meters slightly higher than our apparent horizon. The illuminance of wall light should not be too strong to achieve abundant artistic appealing. The shade of wall light should be decided according the color of wall; if white or creamy wall is provided,soft green or light blue shade  should be used;if lake or sky blue wall is provided,milk white,light yellow and tawny shade should be used; in this way,a conspicuous wall light on a big monocolour wall background, brings a fresh and elegant feeling to people.

The connecting wire to wall light should choose light color,so it would be easy for the paint of the same color of wall be coated to keep the wall clean and tidy.By the way,a groove just the right size of the wire could be carved on the wall  before hand to embed the wire,same color of the wall paint could be coated above the level up with lime.

Classifications:

1,Living room light: A trident, five branched or big round chandelier should be suitable for a relatively higher space,it makes the living room appearing grand and magnificent. However,if the height of living room is relatively low,a floor lamp and ceiling lamp can make it appears bright and generous,and a sense of  contemporaneity.With floor lamp settled beside the sofa, artistic decorative table lamp on the tea table, an installation of wall light slightly lower on the wall around could achieve a better effect for localized illumination for reading books,papers; a cordial and harmonious ambience would be added while talking with guest and customers also.In the back wall of television,a small sized wall light can be installed to protect eyes with its soft lights.

2,Bedroom light:The light in the bedroom should be soft and warm color toned.Wall light and floor light can replace ceiling light in the center,diffuse material shade with  low brightness surface should be used for wall light.The wall above the bedhead would be an ideal place for glass wall light with tawny engraved designs of primitive simplicity,refined elegance, and deep makings.

3,Dinning room light:The light shade in the dinning room should have an extremely good surface finish enabling timely scrubbing; glass, plastic and  metallic material should be used instead of knitted,yarn fabric,complicated formation or constructed with pendants. Light source of a bit yellow such as incandescent or fluorescent should be preferred to send out ardent warm color.Nearby,if a kind of warm colored wall light setting on the wall,it would make an atmosphere letting the guests feeling more inviting and stimulate their appetite.

4,Bathroom light: Bathroom is a relaxing place,thus bright and soft light is used to illuminate the entire room uniformly. As for a small bathroom, a ceiling light is enough. A luminous ceiling with its diffused illumination or integrated ceiling light and wall light are suitable for big bathrooms.Instead of ceiling light,a wall light could avoid water vapour condensed on the surface leading to the corrosion of the metal and the loss of light.Wall light for bathtub,rays of light blended with the water,giving out a sweet fragrant making people feeling relaxed and mellowed.Notice should be mentioned that this kind wall light should be a moisture-proof type.

House illumination never again restricted on “one light one room” as before. How to suitably arrange the match of pendant light,ceiling light,and special used wall light,desk light,floor light together to make a concoction of different tone balmy for inhabitant are an updated requirement of romantics.As for wall lights,it’s role becomes more and more important.

Yard Light

A yard light is a type of outdoor lighting fixture typically installed on a pole less than 6 meters high. It is composed of five different parts: the light source, the light fixture, the light pole, the flange, and the basic foundation burying part. Yard lights bear a great variety and a characteristic of beautification and decoration, therefor,e it is also called landscape garden lights.

When yard lights entered the 1990s, they were widely used in urban slow traffic lanes, narrow traffic ways, residential districts, tourist attractions, parks, squares, private gardens, and courtyard corridors. One side or both sides of the road were equipped with yard lights to provide more affordable time for people’s outdoor activity and to improve the safety level concerning people’s life and property. Whether to ameliorate people’s mood, better their emotions, change their perception and sense, or to make a night mottled with light and darkness, yard lights adorn the city in the day and provide necessary illumination and daily convenience in the night. People feel safe seeing the ambiance of light enhanced by the yard lights; the city highlights were made salient, a beautiful style was created, which has been used to this day and matured into a fully developed industrial chain.

Various kinds network cable

Network cable can be classified into coaxial cable, twisted pair, and optical fiber cable. 

1,Coaxial cable: it’s a kind cable with core copper wire shielded  by insulative layer, which have a capacity

of tough disturbance resisting, stable data transmitting, low price; and I must mention this kind cable also been used for closed circuit TV. The coaxial cable should be used together with BNC Connector, but customer can ask the factory supply cable assembly which the BNC connector already connected with the raw cable wire.

2, Optical fiber cable: it’s the fastest cable been used today, but its price are high, very rare been used in household places. It’s a kind cable consisted of hair-like glass fiber shielded with insulation layer. Rely on optical pulses to transmit data, Optical fiber cable have an extremely strong resistance to interference, high security for data transmission, high speed, large data transmitting capacity. Below, I will introduce the difference between single-mode optical fiber and Multi-mode optical fiber.

(1）Multimode optical fiber.

In multimode optical fiber, the data are transmitted through more than one route, it often been used within a mile’s distance, as the effective distance from transmitter to receiver is about 5miles; furthermore, stronger the source light, more sensitive the receiver, larger distance will be achieved. Our research tells the bandwidth of multimode optical fiber is about 4000Mb/s; single mode optical fiber is used to avoid pulse broadening, the minimum size of fiber core (7-9μ) avoided the jump pulse from side to side. When we use a confocal laser in a wavelength of 1310 and 1550, we see the laser going directly into the tiny fiber core and to be transmitted to the receiver without apparent jumping.

（2）single-mode optical fiber

Single-mode optical fiber have a thinner fiber core, the optical pulses can be transmitted directly to the center of the core. Single-mode optical fiber often been utilized in a longer distance. The signal lost by single-mode optical fiber is lower than a multi-mode optical fiber, for example, in a distance of 3000 feet, multi-mode optical fiber would lose 50% of its signal strength, but for single-mode optical fiber, only 6.25%.The potentiality of Single-mode optical fiber made the only choice for us to employ it in long distance and high speed data transmission. Our recent test point out, a 40G 64 Ethernet information channel can be transmitted as long as 2840 miles. In safe application, the common determining factor for us whether to choose single-mode optical fiber or multi-mode optical fiber is distance: longer distance above 5 miles normally made a choice of single-mode optical fiber; multi-mode optical fiber is used within a 5miles distance, however, the bandwidth should not ignored, we should choose single-mode optical fiber if the future transmission include large bandwidth signals.

3. twisted pair:

Twisted pair is two cable wires stranded together, the standing can make electromagnetic waves neutralized between two wires, can resist outside electromagnetic interference. Twisted pair has a limited transmitting distance, information channel width, and transmitting speed comparing with other transmitting medium, but have a relatively lower price.

The most commonly used twisted pair cables are: CAT3, CAT5, CAT5E and CAT6, the former have thinner diameter, while the later have thicker diameter.

(1)   CAT1, this is a kind cable mainly used to transmit sounds, not for transmit data. The standard of Cat1 is mainly used for telephone in the beginning of eighties.

(2)CAT2, The frequency for this type is 1MHZ, used for sound transmitting and transmitting a low data not more than 4Mbps.The application of CAT2 commonly seen in 4Mbps token passing protocols based old token-ring network

(3)CAT3,This is a kind prescribed cable used in ANSI and EIA/TIA568 protocol, having a transmitting frequency of 16MHz,CAT3 are used for sound transmitting and 10Mbps data transmitting and below. Mainly used for 10BASE—T.

(4)CAT4, with a transmitting frequency of 20MHz, this kind cable mainly used for sound transmitting and data transmitting in 16Mbps and below, used mainly in Token Ring based local area network (LAN) and 10BASE-T.

(5)CAT5, this kind wire increased winding thickness, clad with a kinds of high quality insulation material, Cat5 have a transmitting rate of 100MHz, used for sound transmitting and data transmitting in 100Mbps and below. Cat5 is the most commonly used Ethernet cable for 100BASE-T and 10BASE-T internet.

(6)CAT5E, it’s a kind cable with low attenuation and lesser crosstalk, a higher attenuation to crosstalk ratio

and higher Signal-to-noise ratio, low time-delay errors, greatly improved the performance. CAT5E is mainly used for billibit Ethernet (1000Mbps)

PS:the higher the attenuation to crosstalk ratio (ACR) for a given cable, the less chance of signal errors, the higher the Signal-to-noise ration means less distortion.

(7)CAT6, with a transmit frequency of 1MHz-250MHz, cat6 wiring system should have a relative larger margin for general attenuation-to-crosstalk ratio in 200MHz,it provides 2 times bandwidth than CAT5E. The transmitting performance of CAT6 is high above the standard of CAT5E, which made it most suitably for a application with a transmitting rate above 1Gbps.A big difference for CAT6 comparing with Cat5e is the improvement on the aspect of crosstalk and return loss; cat6 canceled the basic link model but adopted star-shaped topological structure, requesting the cabling distance of a permanent link within 90m and information channel length within 100m.

(8)CAT6E, This is an updated version of cat6, belongs to a kind of Unshielded Twisted Pair (UTP) under the standard of ANSI/EIA/TIA-568B.2 and ISO 6/E, mainly used in Gigabit Ethernet.CAT6E have the same transmitting frequency with CAT6, i.e. 200-250MHZ, the largest transmitting speed of CAT6E is 1000Mbps.Comparing with CAT6, CAT6E greatly bettered the aspects in crosstalk, attenuation, and signal-to-noise ratio (SNR).

(9)CAT7, this is an updated twisted pair under the standard of ISO7/F, mainly for the application and development of 10 Gigabit Ethernet. But, it no longer belongs to a kind of unshielded twisted pair (UTP), but kind of shielded twisted pair (STP).CAT7 has a transmitting frequency above 500MHz, 2 times than CAT6 and CAT6E, and 10Gbps’transmittiong rate.

PS: STP is shielded with aluminum foil, it can reduce radiation, but cannot completely remove it, STP have a higher price than UTP, and installation will not be so easy as UTP, mostly we suggest customers buy UTP for it have advantages such as: Saving space for its smaller diameter, lesser weight, easy bent, easy installation, reduced the crosstalk to the minimum, fire resistance, independent and flexible, suitable for structured and integrated wiring.

S-VHS cable

When we talking about S-VHS cable, we need to know the S-VHS, so what S-VHS is? I would like to give you a general account of S-VHS below:

S-VHS is short for super video home system; this is a new model developed by JVCKENWOOD Corporation (Abbreviation: JVC) in succeeding of VHS by other companies, the new model have a characteristic of high resolution, high fidelity, 20Hz-20KHz’bandwidth, 90dB above dynamic and signal-to-noise ratio. On a par with LD’s image and CD’S sound, S-VHS becomes indispensable equipment for all the Hi-Vi Lovers.

S-VHS have an inferior image quality than DVD’s, but 500TVL’s resolution for most TV can’t achieve, and also you can hardly judge the image quality difference with our naked eye either it played in S-VHS or DVD. Furthermore, the forward compatibility means all VHS tapes can be played in S-VHS player, but it’s not the other way around.

 

Developed on the basis of VHS, S-VHS greatly improved the performance for the compatibility with VHS, and below ,I need to lay the details concerning the electronic circuit, magnetic heads, tapes  which have a thoroughly improvement.

     

1,The video’s Y signal for S-VHS expanded upwardly to the phase of 7MHz, frequency deviation improved to 1.6MHZ,effective bandwidth for brightness improved to 5MHz comparing with VHS’s 1.0MHz and 3.2MHz.According a general calculation for resolution that 1MHz’s bandwidth equals 80TVL, we can know that VHS’s resolution is about 250TVL,S-VHS reached to 400TVL above. That’s huge improvement for image quality.

2, after the improvement of bandwidth, the crystalline magnetic head is no long adapt to eddy current loss and the clutter interference by high frequency, so JVC redeveloped amorphous magnetic heads which was laminated by several thin-films to improve insulation and reduce eddy current. Quite effectively improved high–low frequency performance, and bettered the chroma frequency signal in the lower end of the spectrum, which greatly improved the color saturation.

3, In order to reduce interference between brightness (Y) signal and color (C) signal, S-VHS video recorder handling Y/C signal separately on recording and playing, placing the Y and C signal in a better functioning  condition.
    

4,To adapt the needs of high sensitivity of new magnetic head of broadband, using chromium and Iron oxide Fe₂O₃ for high magnetic saturated coating with a thickness of only 0.5μm ,greatly improved thermoremanent  magnetization（TRM）and coercive force, in this way, the signal recording improved.
  

5, during the process of signal transaction, time-constant is utilized to limit amplitude and impose accentuation, which, in a way, greatly reduced the edge noise of image. The noise in the nonlinear region is also repressed by synchronizing time-constant with inputted signal level.

6,With an audio frequency response of 12 KHz, it’s not enough for VHS recording a high fidelity program. 33.35mm/s’ tape speed, relatively lower than cassette tape’s 47.6mm/s; Improving the tape speed is the only way to improve frequency response. Introducing the specialized Hi-Fi sound accompaniment magnetic head in the high speed rotary drum can make magnetic head’s relative tape speed running 5.8m/s, which is 170 times higher than static sound accompaniment magnetic head, can achieve 20KHz’ frequency response recorded by rotary magnetic head, if the recording in EP Mode(1/3’s normal speed-slow speed), still  a record of 20KHz  maintained ,which makes high fidelity sound accompaniment come true.

7, Based on different characteristics of S-VHS sound accompaniment frequency modulation and whiteness’s frequency modulation. Deep oriented recording method adopted to record the accompaniment sound signal in a blank tape before recording the image signal on the surface, improved the accompaniment standard and efficiently used the tape.

Now, let’s come back to S-VHS cable, while running S-VHS machines properly, a cable connecting between devices is necessary. A brief and simple definition for S-VHS cable is a kind of wire connecting S-VHS devices. Anyway, you can easily know S-VHS cable after you know what S-VHS is. Good quality cables can guarantee S-VHS’s sound and image quality; make S-VHS’s advantage prominent. So don’t lose your S-VHS’s advantage by choosing a good quality cable can be never ignored while you buy the machine but the cable separately.

IEEE 1394

IEEE1394 interface was developed by Apple Inc. Same as USB, IEEE1394 can support peripheral hot swapping and providing power, connecting several difference devices and support synchronous data transmission.
Backplane mode and cable mode are two modes IEEE1394 used for data transmission.Backplane mode can be classified into 12.5 Mbps 、25 Mbps、50 Mbps ,the lowest rate is higher than USB1.1;Cable mode can be classified into several kinds such as 100Mbps, 200Mbps and 400Mbps; it’s the mode of high speed, can transmit uncompressed?high quality data for film.1394b is an updated version of 1394, it’s the only and specialized home network standard designed for audio, video, control and computer. It realized high performance home network through low cost, safety cat5. Long before the time of USB1.1, 1394a interface had possessed a great advantage for its higher speed, but after the coming out of USB2.0, 1394a interface did not possess a very apparent advantage. Meanwhile, many mainstream computers did not have a 1394 interface, if need to be used, relative connector should be used, which would undoubtedly increase the cost. External optical storages with unitary 1394 interface are basically few, mostly are with 1394 and USB together, the usage is more convenient.

The original design of IEEE1394 can allow user edit digital media archive directly thorough IEEE1394 interface to save the space of hard disk by using a computer. Before the coming out of IEEE1394, a special hardware should be used to edit digital media by downloading the film in a hard disk. As the trending of lower price for hard disk space, high speed IEEE1394 replaced USB2.0 to become the best interface for computer hard disk oppositely.Theoretically, 1394a can support the longest wire length 4.5m, have a standard transmitting rate of 100Mbps, and can support more than 63 devices.IEEE1394 has three protocol layers: transaction layer, Physical layer, Data link layer. Among them, transaction layer only support asynchronous transfer, synchronous transfer is provided by data link layer.
IEEE1394 inherited a mature SCSI instructional system and have a stable and efficient transmitting rate. Comparing with USB2.0, CPU has a lighter burden; even though IEEE1394a have a account value lower than USB2.0, the actual transmitting rate is higher than USB2.0,so it used widely for the high speed and stable data transmitting.