Easy install at9 dish

The integer value i is sometimes referred to as the quantization index. In computer audio and most other applications, a method known as uniform quantization is the most common.

There are two common variations of uniform quantization, called mid-rise and mid-tread uniform quantizers. In this case the f x and g i operators are just multiplying scale factors one multiplier being the inverse of the other along with an offset in g i function to place the representation value in the middle of the input region for each quantization index.

The value 2? From this equation, it is often said that the SNR is approximately 6 dB per bit. For mid-tread uniform quantization, the offset of 0.

Sometimes, mid-rise quantization is used without adding the offset of 0. This reduces the signal to noise ratio by approximately 6. In digital telephony, two popular quantization schemes are the 'A-law' dominant in Europe and '? These schemes map discrete analog values to an 8-bit scale that is nearly linear for small values and then increases logarithmically as amplitude grows.

Because the human ear's perception of loudness is roughly logarithmic, this provides a higher signal to noise ratio over the range of audible sound intensities for a given number of bits. Quantization and data compression Quantization plays a major part in lossy data compression. In many cases, quantization can be viewed as the fundamental element that distinguishes lossy data compression from lossless data compression, and the use of quantization is nearly always motivated by the need to reduce the amount of data needed to represent a signal.

In some compression schemes, like MP3 or Vorbis, compression is also achieved by selectively discarding some data, an action that can be analyzed as a quantization process e. One example of a lossy compression scheme that uses quantization is JPEG image compression. During JPEG encoding, the data representing an image typically 8-bits for each of three color components per pixel is processed using a discrete cosine transform and is then quantized and entropy coded.

By reducing the precision of the transformed values using quantization, the number of bits needed to represent the image can be reduced substantially. For example, images can often be represented with acceptable quality using JPEG at less than 3 bits per pixel as opposed to the typical 24 bits per pixel needed prior to JPEG compression. Even the original representation using 24 bits per pixel requires quantization for its PCM sampling structure. In modern compression technology, the entropy of the output of a quantizer matters more than the number of possible values of its output the number of values being 2M in the above example.

Relation to quantization in nature At the most fundamental level, all physical quantities are quantized. This is a result of quantum mechanics see Quantization physics. Signals may be treated as continuous for mathematical simplicity by considering the small quantizations as negligible. In any practical application, this inherent quantization is irrelevant.

First of all, it is overshadowed by signal noise, the intrusion of extraneous phenomena present in the system upon the signal of interest.

The second, which appears only in measurement applications, is the inaccuracy of instruments. Last edited: Feb 6, JustBob SatelliteGuys Guru. May 9, 0 Wisconsin. Sep 7, 1, Las Vegas, NV. I'm not a professional. I saw the installation video and believe my days of self installation are over. Aug 1, 1, 0 Plano, Illinois, United States. Dither screw The at9 was very easy to install with my birddog. I just adjusted the dither one way or another till I got the highest ignal on Wanna find the Top roof mount satellite dish?

Read the below list right the way. Comes with all the screws and plastic split bushings, easy to install.

Ideally sturdy enough to hold most outdoor Antennas. Non — Penetrating Roof Mount 2 — Inch for satellite dish. You may need to do this, too, if you can't find an exact spot elsewhere.

If you're in the northern hemisphere, the dish needs to point south to receive a signal. If you're in the southern hemisphere, it needs to point north, so keep that in mind when looking for obstacles.

Hold the dish's mount to your home and mark the screw positions. The dish's support is an L-shaped rod with a base plate that fastens to your home. Position the base plate flat against the wall or roof in the location you chose.

Look for a series of holes on the plate for bolts. Then, use a permanent marker to note the position of these holes on the roof. Don't try to anchor it to siding since it won't hold. Calculate the size of the pilot holes needed to secure the mount.

The holes' exact size and depth depend on the dish you're installing, so reference the components that came with the satellite. That number will tell you how wide the holes need to be. Create the pilot holes using a drill bit the same size as the mounting bolts. Use a masonry drill bit to break through stone and other rigid surfaces without damaging your drill. The bit needs to create holes that are the perfect size for the bolts.

Drill into the spots you marked earlier once you are ready. Make sure the holes you create are straight, so the mounting bolts fit properly. If they are too small, the bolts won't fit. Erring on the side of caution is better when drilling.

You can always widen a small hole. Place the mount's metal plugs into the holes you drilled. Your dish will come with a set of metal plugs that serve as wall anchors. One end of each plug will have a bolt hole in it. Flip the plugs, so the openings face toward you rather than the wall. You need those openings to secure the mount. When you bolt the wall mount in place, the tails open up, making the plugs harder to remove.

Secure the plugs into the wall with a hammer and chisel. Place the tip of a chisel against one of the bolts. Give the chisel's handle a couple of good whacks to push the bolt into the wall. Keep hammering until the bolt is flush with the wall. Then, repeat this with the remaining bolts. Make sure the bolts are level with the wall, or else the dish's mount won't anchor properly. Place the metal plugs and hammer them into the wall.

Your dish will come with a set of plugs that serve as wall anchors. Position them, so their open end faces out from the wall. That opening is for bolting the wall mount in place. After pushing the plugs into the holes, tap them in with a hammer and chisel.

They are what anchors the mount to the wall or ceiling. If they are loose, your dish could end up crashing to the ground! Bolt the mount onto the plugs in the wall. Position the mount back on the wall, lining up the plate's holes with the pilot holes you drilled.

Fasten the bolts by using a cordless screwdriver. Make sure the mount feels secure in the wall before you move on. If you're sure they are in correctly, take them out and recheck the plugs. Cap each bolt with a metal washer and locking nut. These components prevent the bolts from coming back out of the wall. Slide the washers on first, which are flat metal disks that help the nuts work properly.

Then, add the nuts and turn them clockwise with a wrench until they feel tight and no longer move. Be careful not to overtighten the nuts. Stop twisting them when they become hard to move.

As long as they are not loose, the mount will also stay in place. Part 2. Attach the antenna bracket to the low noise block LNB arm.

Your dish will most likely come with a flat metal plate to connect the satellite dish to the L-shaped LNB arm and other components. Position the plate, so the prongs are on the left and right, facing you.

Hold the LNB arm between the prongs with the tail end extending out past the plate's opposite side. The exact installation process, including the bolts' size, may vary a little depending on the dish you have. Refer to the owner's manual for more specific instructions. Clip the antenna adjustment panel over the plate's prongs. The panel will look like a square box with one end open. Add a washer and nut on the end of each bolt after tightening them. This slot is what you use to point the satellite up or down.

Fit the U-shaped rod inside the adjustment panel. Your dish will have a bent metal rod that fits into one of the slots on the adjustment panel. Slip the rod inside, sliding its prongs through the holes. Ensure the prongs point toward you rather than the tail end of the LNB rod you connected earlier. Fit a small clamp over it, followed by a washer and nut on each prong. The adjustment panel has 3 different slots. Use the slots to reposition the satellite dish. In most cases, the middle slot is best for setting the dish at the proper angle.

Bolt the antenna bracket to the back of the satellite dish. You have a couple more bolts to add to finish the bulk of the assembly, and this is one of the easiest parts to finish. Line up the holes on the plate with the holes on the back of the dish. Stick the longest bolts you have, usually 2 to 3 in 5. Then, place a washer and nut on the end of each bolt, tightening it with your wrench.