Microhard Systems MHX-2400, Operating Manual

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MHX-2400 Operating Manual: Chapter 1 Introduction.
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1. Introduction
1.0 Product Overview
Congratulations on choosing the MHX-2400 wireless transceiver! Your new
MHX-2400 modem is a state-of-the-art, 2.4 GHz frequency-hopping spread-
spectrum communications module. When the MHX-2400 module is
incorporated into the design of new or existing equipment, terminal devices
(DTEs) up to 30 km (or more)
1
apart will be capable of establishing high-
speed
2
communications wirelessly.
MHX-2400 modules provide a practical and reliable alternative to using
traditional analog phone-line modems or “permanent wire” serial cable
(RS-232) connections for data communications between asynchronous serial
equipment. Moreover, wireless data communications using the MHX-2400
module means you will benefit from:
n
greater flexibility and freedom to relocate terminal equipment,
n
eliminated requirement for access to wire-based transfer media
such as telephone lines,
n
the ability to communicate through walls, floors, and many
other obstacles.
While the MHX-2400 module is compact in its design, it delivers power and
convenience and offers quality and dependability. The MHX-2400 module’s
versatility makes it the ideal solution for applications ranging from office-
productivity to industrial data control and acquisition.
While a pair of MHX-2400 modules can link two terminal devices (“point-to-
point” operation), multiple MHX-2400 modules can be used together to
create a network of various topologies, including “point-to-multipoint” and
“repeater” operation. Multiple independent networks can operate
concurrently, so it is possible for unrelated communications operations to
take place in the same or a nearby area without sacrificing privacy,
functionality, or reliability.
1.1 Features
Key features of the MHX-2400 module include:
n
transmission within a public, license-exempt band of the radio
spectrum
3
– this means that it can be used without access fees
(such as those incurred by cellular airtime);
n
a serial I/O data port (TTL levels) with handshaking and
hardware flow control, allowing the MHX-2400 module to
interface directly to any microprocessor with an asynchronous
serial interface.
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Ideal conditions with clear line-of-sight communications, using high-gain antennas.
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Up to 115,200 bits per second (bps).
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902-928 MHz, which is license-free within North America; may need to be factory-configured
differently for some countries.