3-N-089: NMEA Data
3-89N1:
What data language is bi-directional, multi-transmitter, multi-receiver network?
NMEA 2000.
NMEA 0181.
NMEA 0182.
NMEA 0183.
3-89N2:
How should shielding be grounded on an NMEA 0183 data line?
Terminated to ground at the talker and unterminated at the listener.
Unterminated at both ends.
Unterminated at the talker and terminated at the listener.
Terminated at both the talker and listener.
3-89N3:
What might occur in NMEA 2000 network topology if one device in line should fail?
There will be no interruption to all other devices.
The system shuts down until the device is removed.
Other electronics after the failed device will be inoperable.
The main fuse on the backbone may open.
3-89N4:
In an NMEA 2000 device, a load equivalence number (LEN) of 1 is equivalent to how much current consumption?
50 mA
10 mA
25 mA
5 mA
3-89N5:
An NMEA 2000 system with devices in a single location may be powered using this method:
End-powered network.
Dual mid-powered network.
Individual devices individually powered.
No 12 volts needed for NMEA 2000 devices.
3-89N6:
What voltage drop at the end of the last segment will satisfy NMEA 2000 network cabling plans?
1.5 volts
0.5 volts
2.0 volts
3.0 volts
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