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SCUxs-xVL Manual
Revision: 2 - Date: 24-01-2022
Introduction
The Surface Control Unit (SCU) is a 19-inch aluminum case that can be mounted in standard 19-inch racks. It contains
camera and light control for up to 4 channels. This unit is best combined with other Novasub rack units.
Camera & Light Control
This system has integrated camera & light control. That means that the system provides power and control via cable to
light and camera. For this, the system has a Novasub video transmission converter integrated. This converter makes it
possible to transfer a video composite signal over a standard twisted pair cable. The latest converters are Auto tunable for
cable length up to 600 m. The converter can set up either as balanced (twisted pair) or unbalanced (Coax), this means it
can be used with both types. Balanced video signal using screened twisted pair has a few advantages:
• More reliable video transmission through less interference( electromechanical- or radio frequency interference)
• Screened twisted pair is a more robust cable than Coax
• Higher flexibility in applications, twisted-pair cabling is the standard in data transfer worldwide
• Easier to install/repair/handle
The lights are dimmed by changing the amperage with potential meters on the system; maximum clockwise rotation
corresponds with a maximum amperage as specified below. The cameras can be turned on with either a switch on the
system or in the DVR3 software (Only when another system with DVR3 is connected over NovaBus).
Camera & Light control specifications
Standard
Possible range
Notes
Camera
Video Signal
Balanced
Balanced or Unbalanced*
Can be set for each channel separately
Voltage
32 V
12-48 V**
Can be set for each channel separately
Amperage
<500 mA
Fuse
500 mA
-
Self-resetting
Light
Voltage
32 V
24
– 48 V***
Is the same for each channel
Amperage
0-1.7 A
0-2.5 A***
0-100% light, regulated by potentiometer
Fuse
3 A
-
Self-resetting
Power Drain
<50 w for each channel
* Can be changed on the PCB by the client (see below)
** Can be changed in software settings by a Novasub specialist
*** Can be changed with changing hardware components by a Novasub specialist
