Operator Manual
Issue 1
TIL – Eng – Spec – 080
Page 48 of 70
SeaHub
7.3. Selecting the DC “Power Out” Supply Voltage & Ground
This procedure describes how to select the DC supply voltage (and corresponding ground) output
available from the 6-way DIN connectors and 4mm Power Outlet “Banana” sockets on the rear of the
SeaHub unit, using jumper blocks J11 and J12 on the PCB.
DANGER!
Before attempting this procedure ensure that the unit is disconnected from the AC
and DC power source, and all other devices be disconnected from it.
CAUTION!
Before attempting this procedure, thoroughly familiarise yourself with sections 5.3
(concerning the output power supplies, on page 36) and 7.1 (concerning the opening
of the housing, page 46).
1) Unplug the SeaHub unit from any power sources.
2) Open the housing, as described in section 7.1, and remove
the lid, so the circuit board is accessible
3) Locate jumper blocks “J11” and “J12”, by the legend on the
circuit board. The diagram highlights their location - “J11” is
the left hand jumper block, when viewing the circuit board in
the orientation shown above, and “J12” is the right
4) Refer to the table on the following page to select the appropriate POWER (“J11 - OUT +V”) and
GROUND (“J12 – OUT GND”) selection required by your application.
CAUTION!
Failure to observe the notes below may cause damage to the internal circuitry of the
SeaHub and other external connected devices…
•
On “J11” fit the jumper across
ONLY ONE
of the
VERTICAL
pair of pins on the
header to select the output voltage –
DO NOT
bridge more than one pair of pins at
any time.
•
Do not fit the jumper in any other orientation other than
VERTICAL
, otherwise the
power supplies of the unit may be damaged.
NOTE
Remember that the correct ground must also be selected for the supply being used!
5) Use a pair of tweezers or long-nosed pliers to move the jumpers around on the pin-headers.
6) When done, fully close up the SeaHub unit, reversing the steps described in section 7.1.
7) Power up the unit, and verify, using a voltmeter, the correct output voltage is being presented
before connecting any further devices.
