4
Connect your continuity tester to the two terminals in question and check the
continuity.
• If a low resistance exists between the two cores, this may indicate the cores are
connected to circuits or units with low internal resistance. If this is the case,
disconnect the cores from the terminal block and test again.
• The resistance should be nearing ∞ ohms.
5
Tell your assistant to short the two cores together. Repeat the previous test.
• The resistance should be 0 (zero) ohms.
6
Tell your assistant to remove the shorting strap.
• Check that the resistance reaches ∞ ohms again.
7
Check each core’s resistance to ground, and each core’s resistance to all the other
cores in the cable.
• All results should be close to ∞ ohms.
8
Assuming the test results are correct, the cores must be reconnected to the terminal
block (if they had been removed), and the terminals checked to ensure they are tight.
9
On completion, move on to the next pair of cores and repeat the tests until the
entire cable has been checked.
Operational voltage
Check that the operational voltages on the equipment match the power available on
the vessel.
317669/B
107
Содержание EM 122
Страница 1: ...EM 122 Multibeam echo sounder Installation Manual...
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Страница 13: ...EM 122 Figure 1 System diagram 317669 B 11...
Страница 26: ...EM 122 Figure 6 EM 122 Gondola example Cd021 107 24 317669 B...
Страница 27: ...Transducer arrays Figure 7 EM 122 blister and steel pipe arrangements example 317669 B 25...
Страница 42: ...EM 122 B B B Plastic TX protection window 40 317669 B...
Страница 46: ...EM 122 Figure 10 EM 122 Transceiver unit mounting 44 317669 B...
Страница 52: ...EM 122 Figure 13 Rear view 50 317669 B...
Страница 54: ...EM 122 Figure 15 Preamplifier Unit mounting 687 52 317669 B...
Страница 60: ...EM 122 Figure 18 Remote Control Junction Box outline dimensions 58 317669 B...
Страница 85: ...Cable layout and interconnections Figure 32 Transceiver Unit sub racks rear view 317669 B 83...
Страница 88: ...EM 122 Figure 34 Preamplifier underneath view 86 317669 B...
Страница 97: ...Cable layout and interconnections Figure 40 EM 122 Transceiver Unit s rear panel RX 317669 B 95...
Страница 126: ...EM 122 Figure 57 Cable layout 0 5 degree TX page 1 of 2 Cd021 106 Page 1 of 2 315396 Pro03 124 317669 B...
Страница 127: ...Drawing file Figure 58 Cable layout 0 5 degree TX page 2 of 2 Cd021 106 Page 2 of 2 315396 Pro03 317669 B 125...
Страница 128: ...EM 122 Ice window Figure 59 TX Ice window 126 317669 B...
Страница 129: ...Drawing file Figure 60 RX Ice window 317669 B 127...
Страница 131: ...Drawing file Preamplifier Unit Figure 62 RX Preamplifier Unit internal cabling 317669 B 129...
Страница 132: ...EM 122 Figure 63 RX Preamplifier Unit internal cabling 130 317669 B...
Страница 154: ...2013 Kongsberg Maritime...