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N920 Operating Manual

  

Warranty 

Microhard Systems Inc. warrants that each product will be free of defects in material and workmanship for a period of one (1) 
year for its products. The warranty commences on the date the product is shipped by Microhard Systems Inc. Microhard Systems 
Inc.’s sole liability and responsibility under this warranty is to repair or replace any product which is returned to it by the Buyer 
and which Microhard Systems Inc. determines does not conform to the warranty. Product returned to Microhard Systems Inc. for 
warranty service will be shipped to Microhard Systems Inc. at Buyer’s expense and will be returned to Buyer at Microhard 
Systems Inc.’s expense. In no event shall Microhard Systems Inc. be responsible under this warranty for any defect which is 
caused by negligence, misuse or mistreatment of a product or for any unit which has been altered or modified in any way. The 
warranty of replacement shall terminate with the warranty of the product. 

Warranty Disclaims 

Microhard Systems Inc. makes no warranties of any nature of kind, expressed or implied, with respect to the hardware, software, 
and/or products and hereby disclaims any and all such warranties, including but not limited to warranty of non-infringement, 
implied warranties of merchantability for a particular purpose, any interruption or loss of the hardware, software, and/or product, 
any delay in providing the hardware, software, and/or product or correcting any defect in the hardware, software, and/or product, 
or any other warranty. The Purchaser represents and warrants that Microhard Systems Inc. has not made any such warranties to 
the Purchaser or its agents MICROHARD SYSTEMS INC. EXPRESS WARRANTY TO BUYER CONSTITUTES 
MICROHARD SYSTEMS INC. SOLE LIABILITY AND THE BUYER’S SOLE REMEDIES. EXCEPT AS THUS 
PROVIDED, MICROHARD SYSTEMS INC. DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING 
ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PROMISE. 

 

MICROHARD SYSTEMS INC. PRODUCTS ARE NOT DESIGNED OR INTENDED TO BE USED IN 
ANY LIFE SUPPORT RELATED DEVICE OR SYSTEM RELATED FUNCTIONS NOR AS PART OF 
ANY OTHER CRITICAL SYSTEM AND ARE GRANTED NO FUNCTIONAL WARRANTY. 

 

Indemnification 

The Purchaser shall indemnify Microhard Systems Inc. and its respective directors, officers, employees, successors 
and assigns including any subsidiaries, related corporations, or affiliates, shall be released and discharged from any 
and all manner of action, causes of action, liability, losses, damages, suits, dues, sums of money, expenses 
(including legal fees), general damages, special damages, including without limitation, claims for personal injuries, 
death or property damage related to the products sold hereunder, costs and demands of every and any kind and 
nature whatsoever at law.  

 

IN NO EVENT WILL MICROHARD SYSTEMS INC. BE LIABLE FOR ANY INDIRECT, SPECIAL, 
CONSEQUENTIAL, INCIDENTAL, BUSINESS INTERRUPTION, CATASTROPHIC, PUNITIVE OR OTHER 
DAMAGES WHICH MAY BE CLAIMED TO ARISE IN CONNECTION WITH THE HARDWARE, 
REGARDLESS OF THE LEGAL THEORY BEHIND SUCH CLAIMS, WHETHER IN TORT, CONTRACT OR 
UNDER ANY APPLICABLE STATUTORY OR REGULATORY LAWS, RULES, REGULATIONS, 
EXECUTIVE OR ADMINISTRATIVE ORDERS OR DECLARATIONS OR OTHERWISE, EVEN IF 
MICROHARD SYSTEMS INC. HAS BEEN ADVISED OR OTHERWISE HAS KNOWLEDGE OF THE 
POSSIBILITY OF SUCH DAMAGES AND TAKES NO ACTION TO PREVENT OR MINIMIZE SUCH 
DAMAGES. IN THE EVENT THAT REGARDLESS OF THE WARRANTY DISCLAIMERS AND HOLD 
HARMLESS PROVISIONS INCLUDED ABOVE MICROHARD SYSTEMS INC. IS SOMEHOW HELD 
LIABLE OR RESPONSIBLE FOR ANY DAMAGE OR INJURY, MICROHARD SYSTEMS INC.'S LIABILITY 
FOR ANYDAMAGES SHALL NOT EXCEED THE PROFIT REALIZED BY MICROHARD SYSTEMS INC. 
ON THE SALE OR PROVISION OF THE HARDWARE TO THE CUSTOMER.

 

Proprietary Rights

 

The Buyer hereby acknowledges that Microhard Systems Inc. has a proprietary interest and intellectual property rights in the 
Hardware, Software and/or Products. The Purchaser shall not (i) remove any copyright, trade secret, trademark or other evidence 
of Microhard Systems Inc.’s ownership or proprietary interest or confidentiality other proprietary notices contained on, or in, the 
Hardware, Software or Products, (ii) reproduce or modify any Hardware, Software or Products or make any copies thereof, (iii) 
reverse assemble, reverse engineer or decompile any Software or copy thereof in whole or in part, (iv) sell, transfer or otherwise 
make available to others the Hardware, Software, or Products or documentation thereof or any copy thereof, except in accordance 
with this Agreement. 

Summary of Contents for n920

Page 1: ...ng Manual n920 900 MHz Spread Spectrum OEM Transceiver Revision 0 10 April 16 2008 17 2135 32nd Ave N E Calgary Alberta T3K 4Z4 Phone 403 248 0028 Fax 403 248 2762 www microhardcorp com Microhard Syst...

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

Page 3: ...s 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 ante...

Page 4: ...ights ii n920 Regulatory Requirements iii CONTENTS IV 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 CABL...

Page 5: ...dio 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 N920 to inter...

Page 6: ...ommended 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 low...

Page 7: ...nowledge 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 los...

Page 8: ...tem 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 complicat...

Page 9: ...cedure for installing cabling and antennas for use with the N920 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 10: ...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 should...

Page 11: ...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 12: ...the maximum power setting of 30dBm Example 2 What is the maximum power the N920 can be set to comply with FCC and IC given the following equipment given a Yagi Ant Gain 12dBd and cable and connector l...

Page 13: ...d 900MHz Yagi Directional Antenna Bluewave RPTNC Pigtail Patch Antennas MHS031440 8dBi 900 MHz Patch Antenna RPTNC Pigtail MHS031430 12 5dBi 900 MHz Patch Antenna RPTNC Pigtail Omni Directional MHS031...

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