LNB Testing of a Satellite Dish

LNB Parts

An LNB has many elements. associate degree input filter assures that solely signals from satellites enter the LBN. The low noise pre-amp amplifies the satellite signal to a usable level. a neighborhood generator associate degreed mixer down-convert the signal to an intermediate frequency that carries the television channel info. The output filter removes any unwanted signals that will cause interference, and a final electronic equipment will increase the IF to a additional usable level to travel through the cable to the receiver. The output power of associate degree LNB depends upon the strength of the signal received and therefore the style of the LNB.

System LNB Testing

Numerous television system systems put in by service suppliers like Dish Network and DirecTV have system tests that reveal a unsuccessful LNB. the method of testing a system depends on the model of the receiver, however the user's manual illustrates a way to fuck. Your TV screen shows the results of the system take a look at. If the LNB isn't functioning properly, a message can show that clearly says thus. Run a system take a look at exploitation your remote. If a defective LNB message seems, decision your service supplier to send a technician. Service is sometimes enclosed in your subscription worth.

LNB Tester or Meter

Use a meter to check the facility of the signal kicking off of associate degree LNB. a typical frequence meter can show the extent dBm, however it needs external power to control. The meter may additionally  be big-ticket. the facility output ought to be from -80dBm to -25dBm. Smaller, more cost-effective meters designed for home satellite systems connect between the LNB and therefore the receiver. The LNB gets the voltage required to control the electronic circuits from the receiver through the cable. associate degree LNB in-line tester uses this power. Install it between the present cable and therefore the LNB to scan the amplitude.

Replacement

If you have got no resources to perform a system take a look at, or to ascertain the output with a meter, replace the LNB. Check the come back policy for associate degree LNB at a neighborhood satellite dealer or physics store. If you get a replacement one to interchange the one in question, you will be able to come back it for a refund if it does not fix the matter. See your satellite manual for replacement directions. Satellite dishes could also be put in in precarious locations, and accidents will cause injury or death. If you do not have expertise, decision knowledgeable technician to check or replace the LNB.