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381298/C
Verifying that all cables are properly connected
The SN90 relies on communication between each system unit, and between the SN90
and external devices. It is very important that all cables are correctly installed, that the
proper cable types have been used, and that all cables are connected correctly.
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 multimeter and cable
tester) are available.
For this procedure you will also need a qualification tester with the ability to test the
quality and bandwidth of Ethernet cables.
Context
All cabling is described in the
Cable layout and interconnections
chapter. Refer to the
cable plan, the cable list and the basic cable requirements.
Procedure
1
For each cable that is in used on the SN90:
a
Verify that the cable has been installed.
b
Verify that the connections made at each end of the cable are correct.
c
Verify that the cable has been installed as instructed in the basic cable
requirements.
Pay special attention to signal cables. These must not be installed too close
to power cables.
d
Use a multimeter or a dedicated cable tester to check the continuity in each
cable.
2
Use a qualification tester to verify that each Ethernet cable is correctly wired, and
meets the specifications related to quality and bandwidth.
3
If irregularities are found, write these down in the in the
Installation remarks
table.
Related topics
Installation remarks, page 216
Simrad SN90
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