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Do not use signal splitter for Dual Tuner card

Do not use signal splitter for Dual Tuner card

Postby okbet » Fri Sep 10, 2010 6:16 pm

Dear TBS products users,
Please don't use any generic signal splitter for TBS 6981/6980 dual input.The reason is: If you use Tuner A to lock Vertical polarization transponder while using Tuner B to lock Horizontal polarization transponder,from Tuner A 13volt will be sent to LNB and from Tuner B 18volt will be sent,then only one tuner can work. Although there is protection on the board, we still strongly recommend you not to use any generic splitter for avoiding potential risk of burning.
Or you can use special splitter for satellite equipment with DC block on all its ports except one of them like it's shown in the attached diagram in case of two-way splitter with one port passing power and other having build-in DC block
Image
if the splitter does not have build-in DC Blocks on all of its ports except one of them then DC Block Adapter has to be used:
Image
if DC Blocks are not in place then short-cicuit happens, because all splitter ports pass power from the LNB Out and any connected equipment to that splitter like for example TBS 6980/1 card can burn.
okbet
 
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