SubVIS Orca II - User Manual
IMENCO AS
Visiting Address:
Kophaug 3, 5570 Aksdal, Norway
Office: +47 52 86 41 00
Org No: 923 005 749 MVA
Mail Address:
PO. Box 2143, 5504 Haugesund, Norway
Fax:
+47 52 86 41 01
www.imenco.com
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The camera needs to keep a minimum distance to be able to focus on an object. This is known as the
Minimum Working Distance and is measured from the front of the camera to the object.
Figure 4 illustrates the relationship between zoom and minimum working distance. The Minimum
Working Distance increases with Zoom so the object (green disk in the figure) has to be farther away
from the camera. (The figure is not to correct scale)
Figure 5, Minimum Working Distance vs Zoom
Figure 5 shows a crude graph of the Minimum Working Distance plotted versus Zoom values. Notice
that it grows rapidly above 6x and levels out above 10x to a maximum of 2.8 meter between the
camera and the object in water.
3.3
Cabling and Networking Hardware
The standard connector on the Orca II camera is from
SubConn® Ethernet Series
type
Power
Ethernet Circular 13 pins
.
Imenco offers customer specified connectors and cabling with the Orca II camera. Contact Imenco to
work out a solution for other than standard connectors.
The IEEE standards 100BASE-TX and 1000BASE-T defining 100Mb/s and 1000Mb/s data rates over
twisted pair copper cables recognize up to 100 m length between nodes. Pay special attention to the
choice of connectors, cable and method of wire termination in an actual Orca II installation and make
sure it performs to the above standards. Test the solution before committing to work.
The distance from the camera to the network port is usually just a few meters, such as when the
camera is installed on an ROV. The equipment behind that network port may include fiber optic
segments (through the umbilical of the ROV) that extend to the remote station on surface. Signal
transmission and networking hardware after the first network port is outside the scope of this