Power Considerations - Reftek 130-SMHR/9 User Manual

Rev A
network of many 130-SMHR/9 units deployed over a survey site. During field operations, the
130-SMHR/9 can store data in its own internal Compact Flash™ card(s). The 130-SMHR/9 has two
ports (Ethernet and Telemetry) that allow connection to networks locally or remotely (by radio,
telephone, or satellite relays). Some networks include both local and remote interconnections.

Power Considerations

This section describes current draw, power load, and general power supply considerations for
the 130-SMHR/9, peripherals, and subsystems.
The 130-SMHR/9 operates on nominal 15-volt DC power (10 to 15 VDC). This range allows a 130-
SMHR/9 to be powered from an ordinary lead acid battery that can be charged from either a
solar or AC power source or through its internal battery charger.
To ensure continual, uninterrupted power to your 130-SMHR/9 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 NET
port connector (5 VDC and 12 VDC).
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-SMHR/9 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. Contact REF TEK if you
require more accurate calculations or other information regarding power considerations.
3. 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.
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REF TEK 130-SMHR/9 Users Guide
98060-00-UG
5/6/2021
Reftek Systems Inc.