SATELLITE TV RECEIVER DEVICE

Satellite Tv Receiver Device

Satellite Tv Receiver Device

Introduction

Now that we have glimpsed trials of the twisted cord decrease facts and numbers benches that are released by diverse commerce twisted cord and passive apparatus suppliers, it is time to get the exact twisted cord decrease facts and numbers and passives decrease facts and numbers simultaneously and manage the work. First thing to manage is to conceive a straightforward line drawing of the twisted cord paths from construction to construction and/or inside buildings. The key characteristics should be indicated. Use a triangle to comprise an amplifier supplying ahead gain from left to right on your chart. Use around rounds to comprise splitters and directional couplers in the trunk or feeder lines. Use your alternative of little rectangles or Octagons to comprise the taps. Make these large sufficient to compose a two-digit number interior the rectangle or hexagon or adjacent if desired. The number will comprise the tap decrease value. See the graphics underneath for examples.

Using a blend of the emblems overhead, conceive a trunk tree design drawing with the twisted cord distances between yearned twisted cord splitter or tap locations. As each leg of the suggested circulation is drawn, the alternative of splitter versus directional coupler will become apparent as an outcome of the twisted cord extent or passive deficiency on each leg. Draw in the position of the needed valves and if they will require to be 2-port, 4-port, or 8-port valves at each location. When this stage of the drawing is accomplished, the decrease of each extent of twisted cord can be calculated. Tap standards will be allotted when RF pointer grades are calculated.

Now that we have an experiment layout, the RF yield grade of the amplifier can be supplemented to the design drawing and the pointer grades in and out of each extent of twisted cord and passive apparatus can be determined. In the design drawing overhead, the lone television set shown has a 60-foot extent of RG-6 fall twisted cord adhered to an 8-port tap. The yearned pointer grade at the television set should be not less than 0 dBmV at any frequency. A perfect pointer grade should be round +3 dBmV to +5 dBmV. Due to the differential gradient attenuation of the coaxial twisted cord and the passive apparatus, the pointers reaching at the television set may have a distinct power at the largest and smallest RF channels. This distinction worth (slope) should not pass 12 dB maximum. The lesser the gradient distinction, the better for the television tuner to choose the yearned conduit with smallest interference from the other television channels.

Signal Levels - Fill In The Blanks

A computer spreadsheet is a so straightforward way to work out RF pointer deficiency for high and reduced ahead RF circulation frequencies. If a two-way hardworking conceive is yearned, the largest and smallest come back route frequency deficiency should furthermore be calculated. An experiment spreadsheet is shown below. Remember to go in the facts and numbers ...