User's Manual

Exalt Communications, Inc.
Exalt i-Series Installation and Management Guide
5000001 55
2007-04-15
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.
DC Power
The device accepts DC power within the voltage specifications. The DC voltage input
accepts either 20-60VDC. Ensure that the power source is specified for the proper
amount of current delivery capacity. The DC power may be connected as a positive or
negative voltage supply, and be referenced to ground or ‘floating’ (differential voltage).
There are different system grounding considerations depending on the nature of the DC
supply grounding, and consult a qualified electrician or telecoms professional on the
proper wiring and grounding process.
To connect a DC source, with the power disabled on the DC supply, connect proper
gauge wiring to the DC supply. For most (short) power cable runs, 18AWG or 24AWG
wire can be typically used. Strip the ends just long enough for enclosure to the DC radio
connector (approximately 0.25 inches/6mm). If using stranded wire, the stripped ends
inserted into the DC terminal connector must be solder-tipped. If using solid wire, a
solder tip is not necessary. Ensure that the power wiring is long enough to neatly traverse,
when properly dressed, between the source supply and the radio mounting location. If DC
wires are to be exposed to outdoor environments, use wire in the proper weatherproof
wiring jacket.
For longer runs of DC wiring, use a higher gauge wire and/or higher current source
supply to overcome the additional resistance of the DC wiring. However, the DC
connector for the radio may not be able to accept a high diameter wire, transition to
thinner gauge near the end of the wiring run or use the maximum diameter wire for the
entire wiring run, as long as it meets the powering requirements considering total
resistance of the wiring and the power source current load capacity.
Insert the wiring ends into the DC mating connector (supplied) and tighten the terminal
screws to secure the wire into the connector. Do not connect the mating connector to the
radio system and disable the power system.
Pay close attention to the polarization of the DC signals coming from the DC supply and
the ground conductor (if any), and ensure that they are connected to the proper pins of the
DC mating connector. The connector mate on the radio is clearly marked on the front
panel for proper polarization and for ground connection.
Wire across the plus (+) and minus (-) terminals from the DC supply. In addition, place a
separate jumper between the proper terminal and the ground terminal to reference one
side of the power supply line to the radio chassis ground. In some cases, the DC system
may need to be floating and this ground jumper is not necessary; however, many
configurations require one side to be grounded for proper electrical safety.