Sonavision Ltd.
Aberdeen, Scotland
Issue 6
2392-31-0008
Page 10 of 19
2.2 PACKING / UNPACKING
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The unpacking procedure is as follows:
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Remove each unit from its carrying case.
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Check that the contents of each case conforms to the packing note.
•
Notify the manufacturer of discrepancies and/or transit damage.
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Retain the carrying case for future shipment.
2.3 INSTALLATION
2392 Sonar Unit
To install the sonar unit on to an ROV, proceed as follows:
a) Remove the sonar unit from the carrying case and inspect for transit
damage, retain the carrying case for future shipment.
b) Using the test cable and power supply (if provided), connect the sonar unit
to the surface unit or PC and test. If all is satisfactory proceed with c.
c) Fit the unit to the ROV using a suitable and robust clamp, such that the
scribed line (or indent) on the sonar transducer end cap is orientated to
forward or the connector exits to the rear. It is also advisable that a head
guard is fitted around the hood to avoid damage to the transducer when
the ROV hits an obstruction. This is best achieved by using a wire cage
construction (using 5mm stainless steel bar) set vertically around the sonar
hood.
d) Ensure the cable whip is terminated to the supply dc power and
communication in either half duplex or full duplex mode according to the
factory setting of the unit. Connection details for the 6 way connector are
shown in TABLE 1.
e) Check and clean the sonar unit mating area of the connector then lightly
grease with silicon grease, (Dow Corning MS4 silicon compound or
equivalent) the face of the cable whip connector.
f) Mate the connector and ensure the retention clip is over the sonar unit
connector and located in its groove.
g) Connect the Surface Control Unit or PC at the surface end according to
the manual (if a Sonavision surface unit) and test the operation of the
sonar unit. Should the sonar unit not function correctly when installed on
the vehicle remove the unit and test again with the test cable and power
supply. If the sonar unit then works correctly there is probably an
installation problem that should be investigated.
h) If using a PC, communications can be either using RS232 or RS485.
RS232 communications plug directly into the PC COM port. RS485
communications plug into a PC COM port via an RS232/RS485 converter.
Refer to TABLE 2 and TABLE 3 for signal connection details.
In the event of problems suspected in the installation, investigate correct
polarity / voltage of the subsea power supply and correct polarity of the
telemetry conductors.
