HopNet Frequency Hopping Spread Spectrum Advantages
In the frequency domain, a multipath fade can be described as a frequency
selective notch that shifts in location and depth over time. Multipath fades
typically occupy five percent of the band. A conventional radio system
typically has a five percent chance of signal impairment at any given time due
to multipath fading.
Frequency Hopping Spread Spectrum reduces the vulnerability of a radio
system to interference from jammers and multipath fading by distributing or
spreading the signal over a larger region of the frequency band.
The fade resistant, HopNet frequency-hopping technology employs up to 75
channels and switches channels over 100 times a second to achieve high
reliability throughput.
HopNet Data Integrity
An on-board 3 KB buffer and error correcting over-the-air protocol ensure
data integrity even in the presence of weak signals or jammers. The serial
interface handles both data and control of asynchronous data rates of up to
230 Kbps.
Flexible Power Management
The power can be set at 10 milliwatts or 100 milliwatts using the included
software. Reduced power can reduce the size of the coverage zone, which
may be desirable for multiple network indoor applications. You can also place
the transceiver module in a power-save mode, which enables smart power
management. Smart power management allows a remote unit to drop into a
lower current standby mode during transmission or receiving gaps. This
feature also allows HopNet products to be used in various countries where
the output power requirements may vary due to regulation.
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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