Rice Lake MSI-8000HD Remote Display - Manual (Page 37)

COMM Set Up 33
5.12 Antenna Options
Note
To meet FCC licensing rules, you must use only antennas supplied or
recommended by MSI.
Antenna placement is critical to problem free use of your system.
• Be sure a relatively clear transmission path exists between the devices to be
connected. Radio signals travel primarily by line of sight (LOS), obstructions
between stations may degrade the system performance.
• When using the long range antenna, mount the antenna on an elevated structure
to ensure that you have a clear LOS transmission path. This will ensure the
antenna will clear surrounding obstructions. Do not provide a ground plane for
the antenna.
• Fixed station locations often benefit from directional antennas when the location
of the other components of the RF network are fixed and/or in the same direction.
Never use a directional antenna on a mobile system.
• If using the standard antenna, ensure the antenna is not blocked by any metal.
Transmission is good through most kinds of glass so mounting a meter next to a
window should work fine. If there is no clear line of sight place to mount the
recieving device, consider switching to the long range antenna so the antenna can
be remoted.
• The standard and long range antennas are vertical plane devices. They should be
vertical, pointing up or down, when high off the ground (like the underside of a
large bridge crane). Do not mount them sideways. The long range 9dBi antenna
is particularly sensitive to off axis mounting. Use a level to ensure the antenna is
exactly 90° perpendicular to the earth.
• Do not mount an omnidirectional antenna next to metallic or concrete surfaces.
This can result in reflections and undesired RF characteristics. Use a Corner
Reflector instead.
• After installation, seal the antenna connection with an adhesive heat shrink boot.
Failure to seal the antenna may result in liquid destroying the antenna and device
its connected to.
Note
MSI does not recommend extending the coaxial cable beyond 3 meters. At
2.4GHz more loss will result from coax losses than are gained by raising the
antenna. If you must extend the antenna, use a very low loss 50 ohm

coax
such as RG-214, RF-195, or other low loss varieties.
For very short extensions (<1m), cables made with RG-316 are suitable.
FCC STATEMENT
FCC ID: HSW-2450M
Note: This unit has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause interference to radio
communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to correct the
interference at their expense.