Exalt Installation and Management Guide
ExtendAir (TDD) Series
26
203591-004
2010-09-20
Optional AC Power
The optional AC power injector kit easily connects to the customer-supplied CAT5 PoE cable. Refer to
the input voltage requirements stated on the label affixed to the adapter to ensure that the adapter can
be used with the AC mains supply.
The AC plug outlet provided with the adapter may need to be replaced to match the country
configuration. The adapter cable uses a standard connector for this cable for use of a pre-wired cable
appropriate to the outlet configuration. If the appropriate cable is not available, the existing AC plug
end can be severed and a replacement plug affixed. Consult a qualified electrician for this activity.
Do not plug the adapter into the mains power. First, verify that the RF connector is properly terminated
(see
), and then plug in the radio-side connector from the AC adapter to the radio. If the AC
mains can be turned off using a switch, disable the power, plug the AC side of the adapter into the AC
mains socket, and then enable power to the circuit. If the AC mains cannot be turned off, plug in to the
AC main socket to apply power.
Verify that the radio is active by observing LED activity on the injector and radio. All LEDs on the
radio flash at initial power cycle.
Exalt strongly recommends that the AC mains supply be fused or on a separate breaker to ensure
against over-voltage and/or over-current situations and to provide some form of protection to the radio
electronics and other devices connected to the same supply. In addition, if the AC power is subject to
significant spikes or variation, power conditioning is a worthwhile investment, as the quality of mains
power may have a direct impact on the device operation, performance and/or reliability. An
Uninterruptible Power Source (UPS) or other form of battery-backed system protects against brown-
out and black-out conditions, and condition the power presented to the adapter.
Evaluate the opportunity for lightning or other similar surges to be present on the powering system,
including the ability for surges to couple to the power wiring system. If an evaluation indicates that
there is a potential likelihood for these conditions to occur, additional surge protection is
recommended for the input power wiring, especially to protect the radio electronics between the
adapter and the radio’s DC input connector.
The above statement is similarly true for every wired connection to the device. While the configuration
for surge suppression or line conditioning is of a different type for each kind of signal interface, the
opportunity for damage to the device, loss of communications and property is significant. In some
cases, there can also be a risk to human life by not protecting against lightning entering a building
through wiring or improper grounding. If you do not have experience in this type of installation
practice, consult a qualified electrician and/or telecoms professional during the installation and wiring
of the equipment.
Optional DC Power Injector
The ExtendAir (TDD) Series radios use a power injector (sold separately) to send DC power to the
radio over the CAT5 cable, and including the Ethernet connections. Figure 12 shows the power
injector connectors that connect the AC adapter (included with the system) and the radio.
