Unpacking and Accessories
The Skyworth I71S II box has a white package on top of the packaging. It is relatively simple. In the front of the box is the 4 words of the Skyworth box. On the back of the box, the words of GITV also indicate that this box is integrated with the In the middle of the Galaxy broadcast control platform, Skyworth’s WeChat public number is located in the middle of the back, and the bottom is the box's S/N code and production information.
Careful readers will find that Skyworth I71S, reads like Skyworth and iQIYI's co-products, you guessed it, this box is indeed the iQIYI as a platform, plus the Yangguang Galaxy broadcast control platform, genuine The rate is naturally self-evident, and on the side of the package, you can see the iqiyi logo and Skyworth's logo.
Open the packaging, Skyworth I71S second generation box is presented in front of us, the front with a golden color, acrylic texture, good gloss, Skyworth's simple logo is inlaid on the golden acrylic plate above, the corners of a smooth treatment, the size of , A palm around, the official data given for the measurements of 90mm90mm22mm.
On the back, Skyworth I71S II box is made of black plastic material, which means that this Skyworth box is a combination of frontal golden acrylic plate + back plastic, and at the bottom is a round rubber cushion design, softness Still good, the middle part is naturally the detailed parameters of the box as well as the 3C certification logo, of course, ultimately, the GITV certification, and in the input above, you can see is 12V1A, this point is more forceful compared to other boxes, because at the author's current It is the first time that such a large voltage is used in the contact box. This of course ensures the stable operation of the external device.
In the back, Skyworth I71S II box uses the audio + HDMI + RJ45 network cable port + USB + power input interface, this configuration is more popular, not much more.
In front, the Skyworth I71S II box has only one working LED display and will light up when it is working.
Let's take a look at the accessories. The first is the remote control. The Skyworth I71S second generation box is the Bluetooth remote control that provides the test. The classic 11-button design is adopted. The front scrub processing upgrades the grade. The situation, the bottom of Skyworth also highlights its ownership, you can see the top right corner is a voice button, in addition to remote control features, there are voice recognition features, this we said later, and on the back, curved design allows the entire remote control The device is relatively elegant, the battery uses 2 7 batteries.
As a box, HDMI cable is also standard, Skyworth I71S second generation box equipped with some new ideas, the first is a gold-plated interface with protective cover, this point a lot of old box manufacturers will do, the new is relatively rare, at most a few Foundry wiring will be completed, followed by the design of double shielded ring, this point is still very much reflects the demeanor of the big factory, personally think more conscience, and Skyworth logo at the interface also shows that this HDMI cable is not simply comedism .
Power Adapter, as already mentioned, Skyworth I71S II box uses a 12V1A power supply scheme, which also consumes 100V-250V on the input side, plug and play, and the adapter for the line storage box also provides a Velcro, Considered more thoughtful.
Summary: In the accessories and color matching, Skyworth I71S second generation box is quite kind, how specific, we connected to the TV to see!
On-machine testing
After connecting the power supply, the display interface and the network cable, we boot to see that the boot speed is very fast, almost a brush, because in the context of combating piracy, but also a network of innocence and various restrictions on radio and television orders issued, The genuine version became the consensus of the box manufacturers. To this end, the Skyworth I71S II box is integrated into the Yangguang Galaxy Integrated Broadcasting and Control Platform, which is supported by many content service platforms such as CCTV, Jiangsu Internet TV, and the coverage of iQiyi Video. Is to provide users with massive video resources, while providing users with a continuous and stable protection of legitimate content services. In the upper right corner, Skyworth Box will quickly locate the user's city and provide weather forecast.
Since the resources of the two platforms are very rich, the Skyworth I71S II box offers a lot of solutions in terms of classification. The first is hot news today, which is more suitable for crowds seeking information on daily hot spots, and the second is TV movie classification. This is suitable for the chase crowd, of course, iQIYI's VIP will receive special care, there is also a special area, the children also have their own world, of course, there are two platforms for supervision, parents do not have to worry about the network of chaos video so that The children saw, and a variety of specific categories were placed in the channel category, which basically can meet the needs of users regardless of the needs of movies, TV shows, animation and so on. (The picture here is a bit long, please forgive me)
In the application section, users can see the various applications that have been installed, and they can also install applications on their own. The Skyworth I71S II box can also be used as a home hotspot.
In terms of settings, Skyworth I71S II box supports online 4K playback, users can set according to their own bandwidth and needs, but also for speed and other operations, of course, online upgrade is also arranged here.
Of course, many people think that this is nothing special. Well, let's look at its special place. Wechat remote control scans the two-dimensional code of the Skyworth I71S box. The input device code can turn the WeChat into a remote control. This point we have already seen on Skyworth’s A43 TV series launched at the beginning of the year. This is Skyworth's first creation. Of course, the above image on WeChat is not a problem to share on TV. After adding Skyworth WeChat, we can also speak to the mobile phone. Searching for movie dramas can also be pushed onto TVs, and APPs can also be pushed directly onto the boxes via WeChat. This is awesome!
The second is the iQiyi push function, this point is also a branch of Skyworth I71S II multi-screen interactive, as long as the iQiYi above can see the video, click to push to the phone, you can complete, is not time-saving Energy saving?
When I use other boxes, each time I type a title letter, I can search for a TV show. However, the search process still feels a bit more troublesome. The search program provided by Skyworth's I71S II box can be said to be very intelligent and the keyboard is no longer The traditional T9 keyboard, but with the user's mind to choose.
The Skyworth I71S second generation box test provides a Bluetooth remote control. Let's take a look at the comparison of the ordinary remote control. First, the traditional version uses the traditional 24 key, and the battery uses a button battery. The model is also a Bluetooth remote control. it is good.
The method of binding a Bluetooth remote controller is also very simple, enter the Bluetooth settings, according to the Skyworth I71S second generation of the box to determine and return key, heard a "drip" sound, the box with the remote control is bound, and boot more than 60 Seconds do not operate the remote control, the remote control will automatically issue a sound, so that often can not find the remote control (such as the author) who is easy to find.
The Bluetooth remote control of the Skyworth I71S II box also supports voice recognition. The recognition rate is very high. The Southerners can also recognize the standard Mandarin and search time is very short.
Skyworth i71S second generation box uses the chip scheme of Rockchip RK3368. Rockchip RK3368 uses eight core 64-bit ARM Coretex-A53 core architecture, running at 1.5GHz; GPU is PowerVR G6110, supports OPENGL ES 3.1, supports 4K2K Video, H.264/H.265 hard decoding and HDMI 2.0@60Hz output, and in the storage above is used 1G storage, 8G memory program, in the security Bunny ran above 34,338 points.
How is the actual viewing effect?
The first is the connection speed, I just point a video to watch, speed 2.9M / S, very good, and look at high-definition television, the connection speed is not weak, usually other boxes have to wait a few seconds, and this time directly into You can see, it seems that the optimization is still good.
Above is the Skyworth i71S II box in the decoding of 720P, 4K following effect, or very good.
In general, Skyworth i71S II box is a good design, worthy of Xiaobian in the accessories above it like it, and human design above, Skyworth is really considered very carefully, or reflects a TV The demeanor of the giants, but in the playback performance, connection speed, decoding 4K also reflects the strong quality of the overall hardware box, the current retail price of 299 yuan, I think it is worth recommending.
PCB SMT Stencil ,the unique goal is to move solder paste to the bare Printed Circuit Board.
PCB Stencil , SMT Stencil, SMD Stencil , Laser Stencil , What is it?
Apart from all types of Printed Circuit Boards (PCBs) such as Prototype PCB , Aluminum PCB , HDI PCB , Flexible PCB , Rigid Flex PCB , Thick Copper PCB, High TG PCB , JHYPCB also manufactures solder paste stencils to meet Surface Mount Technology (SMT) requirements.
PCB Stencils, also called SMT stencils, SMD stencil, play a key role in transferring accurate amount of solder paste to correct positions on bare circuit boards ready for assembly. In other words, stencils can fast and efficiently ensure the most accurate solder paste amount and optimal electrical connection. With solder stencils, it is possible to use metal squeegee blades to apply solder paste easily over the openings on PCBs and make stencil to be well aligned with the surface of the advanced circuit board.
All of our SMT Stencils are 100% laser-cut type 304 full-hard stainless steel, ensuring the finest quality finish on the market today. We use a .001" laser beam with 98% overlap creating an extremely smooth hole that provides the best paste release. Most stencil fabricators use a .003" laser leaving mouse bites on the aperture edge. You can choose a PCB Prototype stencil, a frameless foil stencil, or a rigid permanently mounted stencil. Both the frameless and framed stencils come in various sizes to accommodate your printer and stencil requirements.
PCB Stencil Types Available:
1. Laser-cut stencils
The openings are lasered on 100% stainless steel. Generally speaking, this kind of stencil can be produced with high quality and a high degree of precision within a short time.
- Advantages: high accuracy; barely influenced by objective elements; trapezoid opening beneficial for demoulding; suitable for accurate cutting; reasonable price;
- Disadvantages: relative low manufacturing speed.
2. Chemical-etch stencil
The openings are etched into the metal using acid. Usually this kind of stencil offers better protection on material temper and hardness.
- Advantages: one-time formation; relatively high manufacturing speed; low cost;
- Disadvantages: tending to form sand clock shape or large openings; numerous manufacturing stages and accumulating errors; unsuitable for fine pitch stencils; bad for environmental protection.
3. Prototype PCB Stencil (Low-volume manual printing. Ideal for prototypes)
When prototyping dictates fast action with minimal cost, our prototype stencils are the best solution. Prototype Stencils gives you a quality stencil and framework so you can handle assembly from the convenience of your own desk.
Prototype SMT Stencil Features:
- Eliminate the registration difficulty associated in hand printing with a flat piece of metal
- Eliminate printer set up for short run prototypes
- Allow quick alignment for repeatability
- Save money over full size stencils designed for automated printers<
- Squeegee included
| Prototype SMT Stencil Specs: | |
| Technology | 100% laser cut |
| Material Used | Stainless Steel |
| Stencil Thickness | 0.06 ~ 0.3 mm |
| Minimum Cut Width | 0.05 mm |
| Maximum Size | 736 X736 mm |
| Aperture Tolerance | within 0.007mm |
| Allow for Fiducial Data | Yes |
| Delivery | 1 ~2 Day |
4. NEW Prototype PCB Stencil Kit (with leaded or lead/free solderpaste)
Includes Prototype Stencil, one board holder, leaded or lead-free solder paste (must specify), temperature marker, squeegee, ESK-safe gloves and alcohol wipe.
5. NEW Pick and Place Tool
Handy and convenient for low quantity prototype assembly using the Prototype Stencils. Re-usable, includes vacuum bulb and vacuum clips with diameters of 3/8", 1/4", and 1/8".
6. Framed SMT Stencils (Also called "Glue-in" or Mounted Stencils)
Framed stencils are laser-cut stencils designed for high volume screen-printing. With a framed stencil, your stencil is securely mounted to either a cast or extruded aluminum stencil frame a stencil frame using a mesh border, allowing for complete control.
Framed SMT Stencil Features:
- Unique Process for smooth aperture walls
- ery clean laser-cut apertures
- Excellent print performance
- Excellent for high-volume stencil printing on printed circuit boards
- Unique process creates permanent non-removable non-fading fiducial
- All framed SMT stencils are double bonded to extreme wear
- 24-hour turnaround standard
| Framed SMT Stencil Specs: | |
| Technology | 100% laser cut |
| Material Used | Stainless Steel |
| Frame Types | Cast, Space Saver |
| Stencil Thickness | 0.06 ~ 0.3 mm |
| Minimum Cut Width | 0.05 mm |
| Maximum Size | 736 X736 mm |
| Aperture Tolerance | within 0.007mm |
| Allow for Fiducial Data | Yes |
| Allow for Panelized Data | Yes |
| Delivery | 1 ~2 Day |
Framed PCB Stencil Specification
|
Framed PCB Stencil Area |
Maximum Squeegee Area |
|
300mm*400mm (11.81inch*15.75inch) |
120mm*220mm (4.72inch*8.66inch) |
|
370mm*470mm (14.57inch*18.5inch) |
200mm*300mm (7.87inch*11.81inch) |
|
400mm*600mm (15.75inch*23.62inch) |
220mm*400mm (8.66inch*15.75inch) |
|
400mm*700mm (15.75inch*27.56inch) |
220mm*500mm (8.66inch*19.69inch) |
|
400mm*800mm (15.75inch*31.5inch) |
220mm*600mm (8.66inch*23.62inch) |
|
400mm*900mm (15.75inch*35.43inch) |
220mm*700mm (8.66inch*27.56inch) |
|
400mm*1000mm (15.75inch*39.37inch) |
220mm*800mm (8.66inch*31.5inch) |
|
400mm*1200mm (15.75inch*47.24inch) |
220mm*1000mm (8.66inch*39.37inch) |
|
400mm*1400mm (15.75inch*55.12inch) |
220mm*1200mm (8.66inch*47.24inch) |
|
420mm*520mm (16.54inch*20.47inch) |
240mm*340mm (9.45inch*13.39inch) |
|
450mm*550mm (17.72inch*21.65inch) |
270mm*370mm (10.63inch*14.57inch) |
|
500mm*800mm (19.69inch*31.5inch) |
320mm*600mm (12.6inch*23.62inch) |
|
500mm*1200mm (19.69inch*47.24inch) |
320mm*1000mm (12.6inch*39.37inch) |
|
550mm*650mm (21.65inch*25.59inch) |
340mm*440mm (13.39inch*17.32inch) |
|
584mm*584mm (23inch*23inch) |
380mm*380mm (15inch*15inch) |
|
736mm*736mm (29inch*29inch) |
480mm*480mm (19inch*19inch) |
7. Frameless SMT Stencil - Foil/Plate Only (for universal frames)
Foil or Plate Only stencils are designed to work within interchangeable plate or "universal" systems. Also referred to as "reusable", these stencils do not need to be permanently glued into a frame.
Frameless SMT Stencils also referred to as foils are laser cut solder paste stencils designed to work with stencil tensioning systems known as reusable stencil frames. This type of stencil does not need to be permanently glued in a frame. Frameless stencils are significantly less expensive than framed stencils and provide money-saving storage while still delivering superior quality and performance.
Frameless SMT Stencil Features:
- Reduced storage space requirements
- Significantly less expensive than framed stencils
- Excellent for prototype Printed Circuit Board Assembly or short runs
- Smooth aperture walls, can be used for 16 Mil pitch and below and for Micro BGA's
- 24-hour turnaround standard
| Frameless SMT Stencil Specs: | |
| Technology | 100% laser cut |
| Material Used | Stainless Steel |
| Stencil Thickness | 0.06 ~ 0.3 mm |
| Minimum Cut Width | 0.05 mm |
| Maximum Size | 280 X 380 mm |
| Allow for Fiducial Data | Yes |
| Allow for Panelized Data | Yes |
| Delivery | 1 ~2 Day |
8. Frameless SMT Stencil - Foil/Plate Only (for hand printing)
For times when you need precise control for smaller production runs, our Foil or Plate Only stencils are ideal. These frameless stencils allow you to hand print with precision just the amount you need and can be stored conveniently.
9. Electroformed SMT Stencils
Electroformed SMT stencils are nickel-based, electroform foils permanently mounted in a stencil frame using a mesh border to tightly stretch the stencil foil taut in the frame. Electroformed stencils offer the best paste release characteristics available and are frequently used for fine pitch (20 mil to 12 mil pitch) SMT applications on printed circuit boards. They are also used for µBGA's, Flip Chip, and Wafer Bumping (12 mil to 6 mil pitch).
Electroformed SMT Stencil Features:
- The smooth trapezoidal sidewalls of an electroformed stencil allow for better paste release
- Nickel has a lower coefficient of friction compared to stainless steel
- Electroform foils are harder than full hard stainless steel of comparable thickness, providing for longer stencil life
- 24-hour turnaround standard
| Electroformed SMT Stencil Specs: | |
| Technology | Electroforming |
| Material Used | Nickel |
| Suitable Applications | All Component Pitches |
| Aperture Tolerance | within 0.007mm |
| Stencil Thickness | 0.06 ~ 0.3 mm |
| 0.06mm.0.08mm.0.1mm.0.12mm.0.13mm.0.15mm.0.18mm.0.2mm.0.3mm | |
| Positional Accuracy | ± 0.008mm |
| Delivery | 1 ~2 Day |
What's the difference between a framed stencil and a frameless stencil?
A framed PCB stencil will have a 0.5" to 1.5" thick metal frame around it, similar to a picture frame. Framed stencils are often used by contract manufacturers, assembly and board houses, and large scale production facilities and are commonly placed in a manual or automated stencil printing machine. Frameless stencils are a thin sheet of material cut with a small border around your design. For example pictures on these products, please visit our Gallery.
What's the difference between Polyimide and Stainless Steel?
All stencils are made with high quality Polyimide and Stainless Steel. We use only the industry leading Stainless Steel, designed specifically for stencils. These materials are ideal for prototype or Multilayer PCB .
Stainless Steel: 0.0007" Laser spot size, 0.001" minimum aperature size.
Polyimide Film: 0.003" Laser spot size, 0.005" minimum aperature size.
Polyimide has a lower precision rate due to the way it is processed and its ability to withstand heat during the cutting process. Minor variances will occur when the material reacts to the laser. Paste release is great, but this material should be limited to a small number of uses and with components 0402 or bigger.
The minimum aperature size for Polyimide is 0.005" vs 0.001" for Stainless Steel. Polyimide also has a natural curl in the material caused by the way the film is manufacturered, this is outside of our control. Stainless Steel provides the ultimate in precision and quality, with a 0.0007" spot size, and exceptional paste release with a truly flat surface. If you want the absolute best reflow experience, there is no comparison, Stainless Steel is the superior material.
Analysis and Treatment of Common Problems in PCB SMT stencil
- Insufficient solder paste
- Smudging/bridging
- Misalignment print
- Bow and twist
How to Determine Stencil Size?
Stencil size is composed by two parts: internal size and overall size. Internal size is the size compatible with that of PCB ready to be assembled while overall size refers to the size compatible with printer parameter limit. As long as both sizes are accurately designed, stencil will be able to make full use of its functions.
Internal size of stencil can be figured out conforming to the following rule:
- Width of Framed Stencil = width of PCB + 100mm while its Length = length of PCB + 100mm
- Width of Frameless stencil = width of PCB + 200mm while its Length = length of PCB + 200mm
For example, if one circuit board size is 50*50mm, then the size of its framed stencil should be around 150*150mm and the size of its frameless stencil should be around 250*250 mm.
It's easy to remember and operate so it worked for manual solder paste printing in SMT assembly prior to the advent of automatic printer. It can be said that different PCB sizes lead to generations of different internal sizes of stencil.
When it comes to automatic solder paste printer, however, it's relatively solid. Overall size of stencil has to be determined by parameter limit of the equipment, that is, printer, because stencil has to work within the range of printer with a frame. Different printers feature different parameter regulations. As far as PCBCart is concerned, the stencil size compatible with our printer can be either 650mm*650mm or 736mm*736mm.
PCB designers have to focus on internal size of stencil, they don't need to care about its overall size since it is generally determined by the parameters of printer in your contract assembler workshop.
How to Use PCB SMT Stencils?
PCB Stencil
PCB Stencil,SMT Stencil,SMD Stencil,Laser Stencil
JingHongYi PCB (HK) Co., Limited , https://www.pcbjhy.com