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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Antenna motors - power consumption
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<blockquote data-quote="Terryl" data-source="post: 989269" data-attributes="member: 369937"><p>I have found that some FTA receiver's do not like the DC power inserter module in-line with them, I have found in bench testing that some (but not all) DC powered switches with a DC power inserter cause the over all impedance at the tuner to act up, some of the switches used by Dish Network will cause a big problem with FTA receivers, the DP44 switches power inserter will cause the receiver to act up.</p><p></p><p>The big problem with using a power inserter is with LNB's that use the +18 and +13 volt switching to go between transponders, some DC power inserters supply too much DC voltage (19 to 22 volts DC) this will cause the LNB to be stuck on one set of transponders.</p><p></p><p>The impedance problems I mentioned caused switching problems between channels due to loss of transponders, some have even caused overheating problems in the tuners DC power supply to the LNB.</p><p></p><p>Theoretically a two way splitter with a DC power path on one side used in reverse could be tried, the DC power side goes out to the LNB, the power isolated side could go to a DC power inserter to run the motor, this way Diseqc commands to move the motor will go to the motor and any DC voltage switching commands would go to the LNB.</p><p></p><p>I have never tested this setup and do not have the lab equipment anymore to do so, so it's a try at your own risk.</p></blockquote><p></p>
[QUOTE="Terryl, post: 989269, member: 369937"] I have found that some FTA receiver's do not like the DC power inserter module in-line with them, I have found in bench testing that some (but not all) DC powered switches with a DC power inserter cause the over all impedance at the tuner to act up, some of the switches used by Dish Network will cause a big problem with FTA receivers, the DP44 switches power inserter will cause the receiver to act up. The big problem with using a power inserter is with LNB's that use the +18 and +13 volt switching to go between transponders, some DC power inserters supply too much DC voltage (19 to 22 volts DC) this will cause the LNB to be stuck on one set of transponders. The impedance problems I mentioned caused switching problems between channels due to loss of transponders, some have even caused overheating problems in the tuners DC power supply to the LNB. Theoretically a two way splitter with a DC power path on one side used in reverse could be tried, the DC power side goes out to the LNB, the power isolated side could go to a DC power inserter to run the motor, this way Diseqc commands to move the motor will go to the motor and any DC voltage switching commands would go to the LNB. I have never tested this setup and do not have the lab equipment anymore to do so, so it's a try at your own risk. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Antenna motors - power consumption
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