antennas. There is no restriction for the separation between the antennas from the same transceiver; but
testing at installation is recommended to verify the system performance that is achieved with a specific
antenna deployment configuration.
Warning
Warning
For installations that will experience vibration or shock, all antennas should be externally mounted and
For installations that will experience vibration or shock, all antennas should be externally mounted and
attached to the ES1-5050CS using cables. Low loss RF cable such as LMR-400 is recommended for cable
attached to the ES1-5050CS using cables. Low loss RF cable such as LMR-400 is recommended for cable
attached antennas. If a radio port is not required for a given application, the port should be disabled in
attached antennas. If a radio port is not required for a given application, the port should be disabled in
so
ware using BC|Commander, and a 50 Ohm terminator should be installed.
soware using BC|Commander, and a 50 Ohm terminator should be installed.
DFS Additional Antenna Separation
DFS Additional Antenna Separation
For 5 GHz transceivers using channels that require DFS radar detection, it is recommended to mount
For 5 GHz transceivers using channels that require DFS radar detection, it is recommended to mount
each antenna for a DFS channel at least 2 feet from any other 5 GHz transceiver’s antenna.
each antenna for a DFS channel at least 2 feet from any other 5 GHz transceiver’s antenna.
Summary
Each antenna must be installed at least 20 cm from the antennas of any other transceivers.
For locations with vibration or shock, no antennas should be directly attached to the BreadCrumb.
For antennas connected to the BreadCrumb via cables, low loss cabling such as LMR-400 is
recommended.
Any unused antenna ports should be disabled in BC|Commander and have a 50 Ohm terminator
installed.
Antennas in fixed locations should be installed plumb and at the same elevation.
The BreadCrumb and its antennas must be located a distance from any persons when operating. The
minimum distance for this model is stated in the the FCC chapter of this guide.
Also Note:
Power to the BreadCrumb should be OFF when attaching or removing antennas or terminators.
To reduce shock and vibration, BreadCrumbs on mobile equipment should be mounted in or on the
cab.
See Physical Placement and other Considerations regarding Line of Sight and Fresnel Radius.
Mounting hardware for cabled antennas may be purchased from Rajant.
5 GHz channels requiring DFS radar detection may get false triggers if antennas are placed near re-
flecting surfaces/objects or other electrical or radio equipment.
D.5 Grounding and Surge Protection
Warning
Warning
To protect the user against the risk of electric shock during high voltage transient events which may oc-
To protect the user against the risk of electric shock during high voltage transient events which may oc-
cur when this equipment is installed outdoors, protective earth grounding of the POE power supply is
cur when this equipment is installed outdoors, protective earth grounding of the POE power supply is
required. Case ground connections are provided on all Rajant supplied POE power supplies. The case
required. Case ground connections are provided on all Rajant supplied POE power supplies. The case
ground connections must be used and must be connected to a protective earth ground. Protective
ground connections must be used and must be connected to a protective earth ground. Protective
earth grounding operations must be performed by trained personnel, and according to local electrical
earth grounding operations must be performed by trained personnel, and according to local electrical
codes and industry best practices, as well as Rajant’s own recommendations.
codes and industry best practices, as well as Rajant’s own recommendations.
To assure continuity of ground from the BreadCrumb to the PoE to the ground, and to help protect the
BreadCrumb and any attached equipemt from electrical damage, please see:
Rajant Best Practices: Grounding and Surge Protection
D.6 Waterproofing
For outdoor installations, Rajant recommends waterproofing all connections as follows:
See Waterproofing Rajant BreadCrumb RF Connections
D.7 Connecting Power
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