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n920X2 Regulatory Requirements 

 

PLEASE READ THIS SECTION CAREFULLY 

 

 WARNING

:   

To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance of 35 cm or more should be maintained 
between the antenna of this device and persons during device operation. To ensure compliance, operations at closer than this distance is 
not recommended.  The antenna used for this transmitter must not be co-located in conjunction with any other antenna or transmitter. 

 

 WARNING

:   

Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept 
any interference received including interference that may cause undesired operation. 

 WARNING

:   

Changes or modifications not expressly approved by Microhard Systems Inc. could void the user’s authority to operate the equipment. 
This device has been tested with MMCX connectors with the antennas listed in Appendix A When integrated in OEM products, fixed 
antennas require installation preventing end-users from replacing them with non-approved antennas. Antennas not listed in the tables 
must be tested 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).  Therefore, the sum of the transmitted power 
(in dBm), the cabling loss and the antenna gain cannot exceed 36 dBm.   

 WARNING

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the 
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. 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, there is no guarantee that interference will not occur in a 
particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined 
by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following 
measures: 
—Reorient or relocate the receiving antenna. 
—Increase the separation between the equipment and receiver. 
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 
—Consult the dealer or an experienced radio/TV technician for help. 

 WARNING

This device contains license-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development 
Canada’s license-exempt RSS(s). Operation is subject to the following two conditions: 
1. 

This device may not cause interference. 

2. 

This device must accept any interference, including interference that may cause undesired operation of the device. 

 WARNING

EQUIPMENT LABELING 
The FCC and IC numbers depend on the model of the radio module. Do NOT use the Marketing Name of the product but the Model 
to distinguish the Certifications Numbers.  This device has been modularly approved.  The manufacturer, product name, and FCC 
and Industry Canada identifiers of this product must appear on the outside label of the end-user equipment. 

 

SAMPLE LABEL REQUIREMENT for Model: n920X2: 

 
 
 

 
 

 
 
 
 
 

Contains:    

FCC ID: NS9N920X2     IC : 3143A-N920X2 

This device complies with Part 15 of the FCC Rules.  
Operation is subject to the following two conditions: 
(1) this device may not cause harmful interference, 
and (2) this device must accept any interference 
received including interference that may cause 
undesired operation. 

 

Summary of Contents for n920X2

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 6: ......

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

Page 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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