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 2400-2483.5 MHz, which is license-free 

2.  General 

 

2.0

 

Product Overview 

The pMXDDL2450   is a high-performance embedded wireless data 

transceiver.  Operating in the 2400 – 2483.5 MHz ISM band, this 

frequency-hopping spread-spectrum module is capable of providing reliable 

wireless data transfer between almost any type of equipment which uses an 

asynchronous serial interface.  The small-size and superior RF performance 

of this module make it ideal for many applications.  

 

While a pair of pMXDDL2450   modules can link two terminal devices 

(“point-to-point” operation); multiple 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 to take place in 

the same or a nearby area without sacrificing privacy or reliability. 

 

1.1  Features

 

Key features of the pMXDDL2450   include: 

  transmission within a public, license-exempt band of the radio 

spectrum

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 – this means that it can be used without access fees 

(such as those incurred by cellular airtime). 

 

a serial I/O data port  with handshaking and hardware flow 

control, allowing the pMXDDL2450   to interface directly to 

any equipment with an asynchronous serial interface. 

 

ease of installation and use – the pMXDDL2450   module uses 

a subset of standard AT style commands, very similar to those 

used by traditional telephone line modems. 

  all units in a system are physically identical, and can be 

configured as a master, repeater or slave using the AT 

command set. No hardware modifications are required 

  128 sets of user-selectable pseudo-random hopping patterns, 

intelligently designed to offer the possibility of separately 

operating multiple networks while providing security, 

reliability and high tolerance to interference. 

  encryption key with 65536 user-selectable values to maximize 

security and privacy of communications. 

 

32-bit of CRC error detection and auto re-transmit to provide 

accuracy and reliability of data. 

within North America; may need to be factory-configured differently for some countries.

 

Содержание pMXDDL2450

Страница 1: ...Operating Manual pMXDDL2450 2X2 MIMO 2 4 GHz OEM DDL Module 1W Revision 0 26 October 3 2022 www microhardcorp com Microhard Systems Inc...

Страница 2: ...CTIONAL WARRANTY Indemnification The Purchaser shall indemnify Microhard Systems Inc and its respective directors officers employees successors and assigns including any subsidiaries related corporati...

Страница 3: ...h FCC Section 15 203 unique antenna connectors and Section 15 247 emissions WARNING MAXIMUM EIRP FCC Regulations allow up to 36 dBm equivalent isotropically radiated power EIRP Therefore the sum of th...

Страница 4: ...Section 15 203 connecteurs d antenne uniques et la Section 15 247 missions WARNING MAXIMUM PIRE R glement FCC permettent jusqu 36 dBm puissance isotrope rayonn e quivalente PIRE Par cons quent la som...

Страница 5: ...ID XMR201901EM12G ISED IC 10224A 201901EM12G Co localisation avec Cellular Modem Les conditions MPE de co localisation de l EUT avec un dip le de 2 5 dBi et un module LTE ont t valu es une distance de...

Страница 6: ...pMXDDL2450 Exigences R glementaires iv Co Location Instructions v 2 GENERAL 1 2 0 PRODUCT OVERVIEW 1 2 1 OUTPUT POWER LEVEL 2 3 INSTALLATION 3 3 0 OVERVIEW 3 3 1 ESTIMATING THE GAIN MARGIN 3 3 2 ANTE...

Страница 7: ...thin a public license exempt band of the radio spectrum1 this means that it can be used without access fees such as those incurred by cellular airtime a serial I O data port with handshaking and hardw...

Страница 8: ...o it is recommended that the lowest power necessary is used using excessive power contributes to unnecessary RF pollution Ideally you should test the communications performance between units starting...

Страница 9: ...on knowledge of the equipment being deployed The following four factors make up a system gain calculation 1 Transmitter power user selectable 2 Transmitter gain transmitting antenna gain minus cablin...

Страница 10: ...en system gain and path loss Referring to the same example suppose the path loss is 100 dB the gain margin would be 40 dB which is more than adequate for reliable communication Path loss is a very com...

Страница 11: ...rocedure for installing cabling and antennas for use with the pMXDDL2450 module 3 2 1 Internal Cabling The most common method for installing the module is to run a cable from the module s UFL connecto...

Страница 12: ...ation Surge Arrestors The most effective protection against lightning is to install two lightning surge arrestors one at the antenna the other one at the interface with the equipment The surge arresto...

Страница 13: ...suitable Choose a Yagi with enough gain to ensure adequate gain margin When deploying the Yagi point the antenna towards the intended target ensuring the antenna elements are perpendicular to the grou...

Страница 14: ...8 pMXDDL2450 Operating Manual...

Страница 15: ...the maximum power setting of 30dBm Example 2 What is the maximum power the pMXDDL2450 can be set to comply with FCC and IC given the following equipment given a Yagi Ant Gain 12dBd and cable and conne...

Страница 16: ...dBi 2 4GHz Omni Directional Antenna RPTNC Pigtail MHS034030 12 dBi 2 4GHz Omni Directional Antenna RPTNC Pigtail MHS034040 15 dBi 2 4GHz Omni Directional Antenna RPTNC Pigtail WARNING Changes or modif...

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