Guidelines for Installation
When installing your system, always consider the following points:
Directional antennas are best for remote unit sites. They may increase the
cost, but they confine the transmission path to a narrow lobe and minimize
the interference from nearby stations.
For systems with constant interference present, you may need to change the
polarity of the antenna system and reduce data streams. Groups of short data
streams are more reliable and have a better chance of success in the
presence of interference than do long data streams.
Systems installed in rural areas are least likely to encounter urban
interference.
Multiple HopNet systems can operate in close proximity to each other but
require a unique network address.
Poor quality coaxial cables will seriously degrade system performance. Use
low- loss cable that is suitable for 2.4 GHz operation.
Short cable runs minimize signal loss.
Refer to the section
Troubleshooting
for additional information on installing a
radio.
Aiming the Antenna and Placing the Remote
Use the following guidelines for aiming the antenna and placing the Remote;
•
Do not place anything immediately in front of the antenna that could
obstruct its radiation pattern. Because the antenna in the HopNet
Remote is inside the unit, the antenna must have a clear line of sight.
NOTE: Use the sticker on the HopNet Remote unit to help you locate
and aim the antenna. The sticker indicates which direction the antenna
is pointing.
•
Be sure the antenna end of the HopNet radio Remote faces the Base
or Repeater that it is communicating with. Our tests have found that
antenna placement is not critical as long as the patch antenna is facing
in the general direction of the other end of the link.
•
If possible, place the Remote unit at a higher elevation than the
structures surrounding it to increase range and link reliability. Since the
Remote will operate with up to 100 feet of interconnect cable between
it and the Host, you can mount the unit on top of a building or other
structure that will provide higher elevation.
Interconnect Cable
The HopNet radios come with 50’ (15 meters) of high quality interconnect
cable. The cable may be lengthened by adding an additional 50’ cable (part
no.: CBLEXT50). The maximum cable length that the HopNet radios will
support is 100’ (30 meters).
Copyright © Murata Manufacturing Co., Ltd. All Rights Reserved. 2012
HN-210D/X, HN-214D/X Rev. 2.0 01/13/17
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www.murata.com
