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Operating Manual

pMDDL900

2X2 MIMO 900MHz OEM DDL Module
(1W)

Revision 0.30, May 28, 2019

Microhard

www.microhardcorp.com

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Содержание pMDDL900

Страница 1: ...Operating Manual pMDDL900 2X2 MIMO 900MHz OEM DDL Module 1W Revision 0 30 May 28 2019 Microhard www microhardcorp com...

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

Страница 3: ...This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However th...

Страница 4: ...45 cm this configuration can be co located with other antennas provided the sum of the MPE ratios for all the other simultaneous transmitting antennas incorporated in a host device is 1 0 0 567 0 433...

Страница 5: ...iii Co Location Instructions iiv 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 ANTENNAS AND CABLING 5 3 2 1 Internal...

Страница 6: ......

Страница 7: ...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 hardware f...

Страница 8: ...t 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 fro...

Страница 9: ...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 l...

Страница 10: ...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 compl...

Страница 11: ...procedure for installing cabling and antennas for use with the pMDDL900 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: ...rs 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 system...

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 pMDDL900 can be set to comply with FCC and IC given the following equipment given a Yagi Ant Gain 12dBd and cable and connect...

Страница 15: ...Antenna RPTNC Pigtail Patch Antennas MHS031440 8dBi 900 MHz Patch Antenna RPTNC Pigtail Omni Directional MHS031251 3dBd 900MHz Omni Directional Antenna Antenex RPTNC Pigtail MHS031461 3dBd 900 MHz Om...

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