background image

Summary of Contents for n920T 2020

Page 1: ...Operating Manual n920T 2020 n920T 2020 900MHz OEM Frequency Hopping DTS Module Revision 0 30 May 29 2020 Microhard www microhardcorp com...

Page 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...

Page 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 t...

Page 4: ...mum calculated MPE ratio for the EUT with 3 dBi dipole antenna is 0 401 evaluated at 38 cm this configuration can be co located with other antennas provided the sum of the MPE ratios for all the other...

Page 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...

Page 6: ......

Page 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...

Page 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...

Page 9: ...n 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...

Page 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...

Page 11: ...procedure for installing cabling and antennas for use with the n920T 2020 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...

Page 12: ...stors 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 syst...

Page 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...

Page 14: ...the maximum power setting of 30dBm Example 2 What is the maximum power the n920T 2020 can be set to comply with FCC and IC given the following equipment given a Yagi Ant Gain 12dBd and cable and conne...

Page 15: ...31440 8dBi 900 MHz Patch Antenna Omni Directional MHS031251 3dBd 900MHz Omni Directional Antenna Antenex MHS031461 3dBd 900 MHz Omni Directional Antenna Bluewave MHS031471A 8dBi 900MHz Omni Directiona...

Reviews: