NuPower Xtender™ VU4GX02 User Manual
Rev 1.2
6
3
SETUP AND OPERATION
This section provides specific details for proper operation of the NuPower Xtender module. Following
these guidelines will prevent damage to the bidirectional amplifier or external equipment.
3.1
POWER SUPPLY REQUIREMENTS
To operate the NuPower Xtender VU4GX02, ensure that the power supply has adequate overhead to
source the current demand of the RF amplifier. The power supply source must provide a voltage of
+28 VDC with greater than 3 amps capability.
3.2
CONNECTING A PROPER LOAD TO THE ANTENNA TERMINAL
To prevent damage to the amplifier module, the antenna terminal must be terminated into a 50
Ω
load.
Examples of a proper load include:
Directly connecting to an antenna specified for the frequency range (225 to 512 MHz).
Connecting to an inappropriate antenna may result in damage to the amplifier module.
Connecting to a proper antenna through a 50
Ω
transmission line or coaxial cable. Avoid using
damaged cables or corroded connectors while attaching the unit to an antenna.
Terminating the antenna terminal into a 50
Ω
power attenuator with minimum 20 dB
attenuation.
Connecting to a 50
Ω
load capable of dissipating the RF power from the amplifier module. Loads
capable of handling 30 Watts (min) are recommended.
3.3
POWERING‐UP THE NUPOWER XTENDER
The NuPower Xtender VU4GX02 must be terminated into a proper load before power is applied. Refer
to Section 3.2 for the specifications of the proper load. After the amplifier is properly terminated, the
interface cable can be connected to the unit and power can be applied. The amplifier is now ready for
operation.
