Refraction Technology 130-01, Operation Manual

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Doc-1301-Ops Rev 2.9.1 10/30/08
Refraction Technology, Inc. 15
1.6.2 Power Considerations
This section describes current draw, power load, and general power supply
considerations for 130-01 DAS units, peripherals, and subsystems.
All 130-01 DAS units operate on nominal 12-volt power (10 to 15 VDC). This
range allows a 130-01 DAS unit to be powered from an ordinary lead acid
battery that can be charged from either a solar or AC power source.
To ensure continual, uninterrupted power to your 130-01 DAS and
peripherals, use a well regulated power supply that can deliver at least 1.25
times the maximum current that the load of your combined system
components requires. Be sure to account for the cable resistance (especially
if you build your own cables). Power for an external modem is available from
the modem port connector (5 VDC or 12 VDC). Also 12 VDC is available on
the two channel connectors.
In general, perform the following to ensure a sufficient power supply:
1. Use the specification data and add the maximum current draw for the 130-01
DAS and each peripheral that uses the same power supply to obtain the
maximum total current they will draw at any given time then add at least 25%.
2. Check your power supply's specifications to ensure that it can handle this load.
The power specifications for 130-01 DAS units are provided for each
configuration of 130-01 DAS. Contact Refraction Technology if you require more
accurate calculations or other information regarding power considerations.
Solar power setups are frequently used in remote locations and these are
available in several capacities that cover the various equipment
configurations. Solar power arrays supplied by REF TEK include solar panels,
battery charge regulators, and protective safety devices, but they may or
may not include the actual batteries.