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 2400-2483.5 MHz, which is license-free 

2.  General 

 

2.0

 

Product Overview 

The pMDDL2450 is a high-performance embedded wireless data 
transceiver.  Operating in the 2400 – 2483.5 MHz ISM band, this 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 pMDDL2450 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 pMDDL2450 include: 

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

spectrum

1

 – 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 pMDDL2450 to interface directly to any 
equipment with an asynchronous serial interface. 

 

ease of installation and use – the pMDDL2450 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 pMDDL2450

Страница 1: ...Operating Manual pMDDL2450 2X2 MIMO 2 4 GHz OEM DDL Module 1W Revision 0 26 March 10 2018 Microhard www microhardcorp com...

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: ...ested to comply with 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 Ther...

Страница 4: ...re test s pour se conformer la 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 quivale...

Страница 5: ...with GSM UMTS LTE Data Module FCC ID RI7LE910NAV2 IC 5131A LE910NAV2 Co localisation avec Cellular Modem Le maximum calcul rapport EMT pour l EST avec antenne dip le 2 5 dBi est de 0 379 cette configu...

Страница 6: ...pMDDL2450 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 ANTEN...

Страница 7: ...blic 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 hardware flow...

Страница 8: ...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 fr...

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 cabling...

Страница 10: ...n 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 comp...

Страница 11: ...procedure for installing cabling and antennas for use with the pMDDL2450 module 3 2 1 Internal Cabling The most common method for installing the module is to run a cable from the module s UFL connect...

Страница 12: ...tors 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 arrestor grounding syste...

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: ...the maximum power setting of 30dBm Example 2 What is the maximum power the pMDDL2450 can be set to comply with FCC and IC given the following equipment given a Yagi Ant Gain 12dBd and cable and connec...

Страница 15: ...0 12 dBi 2 4GHz Omni Directional Antenna RPTNC Pigtail MHS034040 15 dBi 2 4GHz Omni Directional Antenna RPTNC Pigtail WARNING Changes or modifications not expressly approved by Microhard Systems Inc c...

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