Exalt Communications Inc.
EX-2.4i Installation and Maintenance Manual
Page 18
MAN-002400, Revision 001
2005-12-01
Figure 4-5:
DC Connection
Once the wires are connected to the mating connector, do not connect to the radio and first test
the DC connection to the connector from the DC supply. Engage power on the DC supply, and
use a volt meter to verify proper voltage level and polarization.
Verify that the RF connector is properly terminated, per section 4.2.1 above. Disengage power
once again on the DC source, and connect the mating connector to the radio device. Engage
power on the DC source. Verify radio is active by observing LED activity. All LEDs will flash at
initial power cycle, for the user to verify that all LEDs are operational.
Refer to the previous section (4.2.2) regarding fusing, breakers, lightning protection, surge
protection and power conditioning. These recommendations should also be followed for a DC
supply.
4.2.4 Backup or Emergency Power
In addition to traditional backup power systems, such as battery supply, UPS or generator-driven
central supply, the EX-2.4i is designed to accommodate a multi-source DC supply, if desired, for
backup power source connection. If your primary source of power is not backed up directly, you
can alternatively connect a second source of power supply to a second set of pins on the DC
connector. These pins are properly bridged and rectified to isolate the two DC power sources
from one another, and draw from either or both of the supplies, as necessary.
For example, some users identify the AC adaptor as a critical path assembly for overall system
reliability, and connect redundant AC adaptors accordingly. Or, they may have AC supply as
primary, and a secondary DC system that engages in case of AC power failure. Likewise, this
redundancy can be wired into the DC connector accordingly. Virtually any redundant power
system can be accommodated with this dual-input structure, as desired.
4.3 The Antenna/Transmission System
This section provides general guidance to the mounting and connecting of the RF transmission
system, consisting of the antenna, RF cabling and RF lightning arrestors. Manufacturer’s
instructions for proper mounting, grounding and wiring of these devices should be consulted for
definitive direction, and those instructions supersede any of the information in this section.
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40-60 VDC
