ANTENNA SET-UP CONTINUED.
ELEVATION:
Angle between the Earth and the satellite above the horizon. is is also referred to as the up
or down movement (position) of the satellite antenna.
POLARIZATION:
Correction between where the antenna is relative to the curvature of the Earth and the
satellite's signal beam. e satellite signal is either Horizontal or Vertical polarized, but due to the longitude
of the antenna location, the antenna's feed horn must be rotated to correctly match the beam's polarization.
If you choose to perform the antenna alignment yourself, you must align the azimuth and elevation settings
independently. Once the antenna is pointed at the satellite, minor adjustments should be made to “peak” the
antenna, which will maximize your signal strength. It is recommends using a spectrum analyzer to align the
antenna for least interference and best reception. When adjusting polarization, it is best to perform the
alignment to MINIMIZE the interfering signals instead of MAXIMIZING the carrier's signal strength .
If you are peaking the dish with a spectrum analyzer, you will be able to see if your antenna is picking up any
interference around the carrier. e adjacent transponders on the desired satellite will be polarized opposite
to the target signal transponder.
TRANSPONDER INTERFERENCE:
is problem manifests itself in random audio dropouts and a
momentary fault indication on the front panel of the FTA receiver. You may also see the Eb reading dip when
the dropout occurs. If a dish is not properly polarized, the receiver may “see” some unwanted signals from
either adjacent transponder on the satellite. is problem can be fixed by correct adjustment of dish
polarization.
SOLUTIONS:
Check everything that could be preventing the signal transmission.
•
1. Make sure your dish has not moved.
•
2. Make sure nothing is blocking the dish.
•
3. Make sure the cables that run from dish to receiver are securely connected, and connections
exposed outside your home are sealed with silicone at the connectors.
•
4. If you had severe weather, inspect your dish for debris or misalignment.
Inspect
or realign your dish when you can easily and safely do so. Dishes often get out of alignment or settle
form bad weather.
Disconnect
and reconnect all cable ends between the dish and the receiver. Start with the SAT–IN
connection at the back of your receiver and work your way to the dish. Take out each cable and inspect it.
Check the center wire in the cable. If the wire is bent, straighten it. Reconnect the cable. Be sure it’s securely
connected. If you see corrosion in the cable connection, it is best to replace the connectors and seal with
silicone gel to avoid problems in the future. Long cable lines (more than 100 feet) may need additional power
to improve signals.
Test
the signal strength using your remote and on–screen menu. Your owner’s manual explains how to run a
signal test. In clear weather, the strength should be over 70 on most transponders. If it’s not, your problem is
probably with your cable connections or dish pointing. For High–Definition receivers 60 or above is normal.
You may see signal strength of zero on transponders 0 is is normal in many areas. Find a system manual to
shows how to run cables and point your dish.
Reset your receiver by turning it off and unplugging it. Wait 15 seconds, then plug it back in and turn
it on.
NOTE: Make sure the Cables, Connectors and Satellite Dishes are maintained at all times.
Document page.14
VIEWSAT 9000HD User Troubleshooting Guide & Manual. April /2008