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381298/C
181
Verifying that the SN90 is ready for
operational use
Topics
Verifying that operational power is correct, page 181
Verifying that all cables are properly connected, page 182
Visual inspection of the display, page 183
Visual inspection of the Processor Unit, page 184
Visual inspection of the Transceiver Unit, page 185
Visual inspection of the Operating panel, page 186
Verifying that operational power is correct
The SN90 operates on AC power from the vessel’s mains supply. Before you can apply
AC power up any SN90 unit, you must verify the power is correct.
Prerequisites
• All SN90 hardware units have been installed according to the relevant instructions.
• All system cables have been installed.
• All connections have been made.
• All operating power is available.
• All relevant personnel (ships electrician) and tools (for example a voltmeter) are
available.
Procedure
1
For each SN90 unit that operates on AC mains:
a
Verify that the unit is connected to AC mains.
b
Measure the voltage and the frequency in the power outlet, and make sure that
the relevant SN90 unit can operate on this power.
c
Verify that the circuit breaker on the power circuit can handle the load when
the SN90 is powered up.
2
If irregularities are found, write these down in the in the
Installation remarks
table.
Related topics
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