Operator Manual
Issue 1
TIL – Eng – Spec – 080
Page 11 of 70
SeaHub
3.2. General Overview
The “SeaHub Surface Interface Module” is designed to be a portable and universal interface box
providing a single module solution for interfacing the range of
Tritech’s
sub-surface products (sonars,
acoustic modems and other undersea sensors) into a PC computer or Laptop.
Power In
The module may be powered from either a “universal mains” AC power-supply, or a DC power input over
the +12 to +36V range, allowing operation from batteries, bench-power-supplies - please refer to section
5 (page 34) for further details and safety instructions.
Communications
Tritech’s
sub-surface products, or other supported peripherals may be connected to the ‘AIF ArcNet’ port
or alternatively to one of four communication ports on the rear of the unit. Under software control, the
hardware communication standard of each port may be selected, and these include; ArcNet LAN, RS232
(3 and 5 wire variants), RS485 (Half-Duplex), RS422 (Full-Duplex) and RS232 (Full-Duplex) – although
not all standards are supported on each port, refer to section 6.3 on page 40 for further details.
The front of the module provides LED status indicators for power and the selected communication mode
on each of four communication ports.
For more integrated connections, the ‘AIF ArcNet’ connector is provided giving access to +12V, +5V and
ArcNet signals – both TTL and Analogue variants. Additional legacy wiring configurations are also
supported on this connection, but consult Technical Support for further details.
Power Out
Tritech’s
sub-surface products may additionally derive DC power if connected to either of the two 6-pin
“DIN” communications ports (labelled “C” or “D”). If the AC “mains” power input is being used, then the
output voltage on Ports “C” and “D” will be +28V(
±
5%)
1
, while a DC power source will have a fused
version of the input voltage available on the output instead – check compatibility with all devices before
connection, see sections 5.2 & 5.3 on pages 35 & 36 for details.
Further DC output power (and Earth) connections are provided for external devices through three 4mm
sockets on the rear of the unit. If the “mains” power input is being used, then the output is internally
jumper selectable from +28V (factory default, see note below), +12V or +5V, while a DC power source
will have a fused version of the input voltage available on the output instead.
NOTE
The +28V(
±
5%) DC Output, available when AC Mains power is applied, is the factory set
voltage which if necessary can be increased to a maximum of 36V(
±
5%) by internal
adjustments.
RAT
For sonar specific control, the front panel also contains provision for connection to a RAT (Remote
Access Terminal). However, only RATs with a PS2 “Togglestick” mouse-controller and RS485 serial
communications are supported.
USB
Two USB Type-A sockets are also provided for user specific peripherals to be connected.
Each socket is capable of delivering 500mA of current (to a self-powered hub), and is protected
accordingly.
1
Factory set to 28V. Internal PSU adjustable up to 36V(
±
5%).
