Murata Electronics North America HN1010 Manual Do Utilizador

Overview 

2  

HopNet Family of Products 

M-2410-0010, Rev - 

•  Employ frequency hopping technology with up to 75 channels in the 2401 to 2475 

MHz frequency range 

•  Support RS-232 and RS 485 interfaces (HN-210 and HN-510 are RS-232 only) 
•  Support digital addressing for up to 64 networks, with 62 remotes per network. 
•  Use transparent ARQ protocol 
•  Use same hardware for all supported data rates 
•  Supports up to 230 Kbps asynchronous data rates 
•  Full Duplex 
•  Stores setup configuration in nonvolatile memory (FLASH) 
•  Provide fast acquisition – less than 2 seconds is the typical time to acquire hopping 

pattern 

•  Use smart power management features 

Refer to the following list of terms that may be unfamiliar to you. These terms are 
used throughout this document.  

ARQ 

Automatic Repeat Request. The operation in which the radio 
will re-send the data until it is received correctly. 

bps 

Bits-per-second. A measure of information transfer rate of 
digital data across a channel. 

Decibel 

A measure of the ratio between two signal levels. Used to 
express either loss or gain. 

dBi 

Decibels referenced to an ideal isotropic radiator in free space. 
Used to express antenna gain. 

dBm 

Decibels referenced to 1 milliwatt. An absolute unit used to 
measure signal power. Transmitter power output or received 
signal strength. 

DCE 

Data Communications Equipment. A device that receives data in 
the form of digital signals at its input. The modem side of a 
computer-to-modem connection. 

DCD 

Data Carrier Detect. 

DTE 

Data Terminal Equipment. A device that provides data in the 
form of digital signals at its output. The computer side of a 
computer-to-modem connection. 

EIRP 

Effective Isotropic Radiated Power.  

ISM 

Industrial, Scientific, or Medical band operating at 2.4 GHz. 
Allows use of a radio without a license, but the equipment must 
be immune to interference from other users in the band and