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Operating Manual

n920X2

900 MHz Spread Spectrum OEM Transceiver

Revision 0.30

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January 22, 2019

www.microhardcorp.com

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Содержание n920X2

Страница 1: ...Operating Manual n920X2 900 MHz Spread Spectrum OEM Transceiver Revision 0 30 January 22 2019 www microhardcorp com...

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

Страница 3: ...ment 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 there is no...

Страница 4: ...474 evaluated at 35 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...

Страница 5: ...Location with Cellular Modems iv CONTENTS 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 ANTENNAS AND CABLING 5 3 2...

Страница 6: ......

Страница 7: ...adio 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 control allowing the n920X2 to in...

Страница 8: ...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 from a l...

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 lo...

Страница 10: ...ystem 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 complic...

Страница 11: ...dure for installing cabling and antennas for use with the n920X2 module 3 2 1 Internal Cabling The most common method for installing the module is to run a cable from the module s MCX connector to a r...

Страница 12: ...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 sho...

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 n920X2 can be set to comply with FCC and IC given the following equipment given a Yagi Ant Gain 11dBd and cable and connector...

Страница 15: ...900 MHz Patch Antenna RPTNC Pigtail Omni Directional MHS031251 3dBd 900MHz Omni Directional Antenna Antenex RPTNC Pigtail MHS031461 3dBd 900 MHz Omni Directional Antenna Bluewave RPTNC Pigtail MHS031...

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