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Chapter 2 SMART2 Installation
2.4.1 Fuse for the Power Supply
Install a user supplied 5 A slow blow fuse in the positive line of the connection to the power source to protect the
power supply wiring and your warranty.
Refer to SMART Antenna Additional Equipment Required on the next page for fuse recommendations.
2.4.2 Power Supply Requirements for the SMART2
The SMART2 requires a power supply that provides:
a voltage in the range of +7 to +30 VDC, current consumption 500 mA
l
at least 15 W of power (typical use: 2.5 W)
l
See Table 16: SMART2 Power Requirements on page 69 for more power supply specifications.
The SMART2 has an internal power module that:
filters and regulates the supply voltage
l
protects against over-voltage, over-current and high-temperature conditions
l
provides automatic reset circuit protection
l
If the voltage supplied is below the minimum specification, the receiver suspends operation. If
the voltage supplied is above the maximum specification, the receiver may be permanently
damaged, voiding the warranty.
The supply must be capable of providing enough current to operate the SMART2, including the
initial inrush transient. The supply must also be current limited to 5 A with an external fuse.
The amount of power required depends on the number of constellations and signals tracked,
and the features enabled.
Refer to SMART Antenna Interface Cable (Optional Accessory) on page 72 for details about the power cable.
SMART2 Installation and Operation Manual v4
Figure 5: Power Supply Fuse
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