Operator Manual
Issue 1
TIL – Eng – Spec – 080
Page 35 of 70
SeaHub
5.2. Choosing a DC Source
CAUTION!
Care should be taken when choosing a DC power source, as it should be ensured
that the necessary power demand from the SeaHub, and connected peripherals, is
met.
•
The minimum specification of the power supply is 5W assuming no other USB or external devices
are connected to the SeaHub. However…
•
If external sensors, Sonars or serial devices are connected to the 6-Way DIN connectors that
draw power, then the additional load of these should be added.
•
Similarly, if power is drawn from the 4mm “Power Output” sockets, then the additional load should
also be taken into account.
•
If any USB peripherals are connected to the two USB front-panel connectors, and these require
more than 100mA, then an extra 2.5W per peripheral should be added.
•
If a RAT is connected, then an additional 3W should be added.
For example, a SeaHub module is to be powered from a 28V DC source, connected to…
•
A
Tritech
RAT (3W)
•
2
×
Tritech
SeaKing Sonars (10W each)
•
An external USB GPS module requiring 500mA (2.5W)
Then the DC power supply must be capable of supplying at least
30.5W
(5W + 3W + 10W +
10W + 2.5W).
The voltage available on communication ports “C” and “D” will be 28V, while the voltage
available on the 4mm power sockets may be 28V(
±
5%), +12V or +5V depending on
internal voltage selection settings.