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NEMA 2000 connection of new Lowrance unit

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NEMA 2000 connection of new Lowrance unit

Old 03-21-2007, 09:39 PM
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Default NEMA 2000 connection of new Lowrance unit

Just got my Lowrance 7600CHD from Jim at BOE, I just talked to him yesterday at lunch and it was in my driveway when I got home tonight. I am going to start hooking up the system over the weekend and 1 thing isnt clear, I know the LGC antennea needs to be powered seperately. Does this also power the whole NEMA buss? I am going to add the EP30 and the EP35, it looks like this is the only power connection to the network just wanted to be sure. Thanks
Old 03-21-2007, 10:09 PM
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Default RE: NEMA 2000 connection of new Lowrance unit

You will need to power the unit and the buss. The antenna will get it's power from the buss.
Old 03-21-2007, 10:20 PM
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Default Re: NEMA 2000 connection of new Lowrance unit

david,
I understand that both the unit and buss need to be powered. The main power cable from the back of the unit breaks into 3 sections-1 power for unit 2-nema0183 set 3-LGC 2000 power. Does this 3rd set power the whole buss or just the LGC antennea. That is what is not clear by the directions.
Old 03-22-2007, 06:20 AM
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Default Re: NEMA 2000 connection of new Lowrance unit

The third set powers the entire NMEA 2000 bus. Did that unit come with a single "T" and one 60 ohm terminator or the double "T" and (2) 120 Ohm terminators?
Old 03-22-2007, 07:44 AM
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Default Re: NEMA 2000 connection of new Lowrance unit

lakensea,
It came with the single T and a 60 ohm end. In the instructions it shows a soft cable T and not a hard T. What is the difference between a 60 and 120 ohm end? The GlobalMap 7300 I originally bought had a double T but that was the red connectors, this unit has the blue connectors.
Old 03-22-2007, 10:35 AM
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Default Re: NEMA 2000 connection of new Lowrance unit

Once you add additional network drops you need to use a terminator at each end of the bus, hence (2) 120 ohm resistors.

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