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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of 3Com 10BASE-2, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of 3Com 10BASE-2 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of 3Com 10BASE-2. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of 3Com 10BASE-2 should contain:
- informations concerning technical data of 3Com 10BASE-2
- name of the manufacturer and a year of construction of the 3Com 10BASE-2 item
- rules of operation, control and maintenance of the 3Com 10BASE-2 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of 3Com 10BASE-2 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of 3Com 10BASE-2, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the 3Com service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of 3Com 10BASE-2.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the 3Com 10BASE-2 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
U NTERMINATED E THERNET 10BASE-2 (BNC) M ODULE I NSTALLATION G UIDE F or the LANplex 2500/2016 Module Description This module contains eight (8) unterminated Ethernet 10BASE-2 ports that use BNC connectors. I f a por t on this module is at the end of a 10BASE-2 (BNC) segment, you must provide an external 50 Ohm terminator . When the port is at the [...]
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Page 2
Status LEDs The option module contains one Board Error LED , eight port status Ac ti ve LEDs, and eight por t status Error LEDs. Depending on the condition, the por t status LED is either Ac ti ve (green) or Error (yellow). See the table below for a description of the status LEDs. . Safety Information Electrostatic discharge (ESD) can damage compon[...]
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Page 3
T o remove the faceplate: 1 Loosen the tw o captive screws securing the faceplate to the chassis. 2 Pull the faceplate awa y from the system. Read if replacing a module Y ou can replace a module while the system is powered on. Replacing the module requires that you r emove the attached cables from the module ’ s por ts prior to installing the new[...]
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Page 4
The LANplex system will automatically reset when a module has been installed with the power on. If you physically change the configur ation of the system after defining an IP interface, the port designated for that inter face may no longer be valid. Y ou may have to redefine the interface. F or information on defining an IP inter- face , see th[...]
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Page 5
4 T o seat the module, firmly push the module for ward to engage the module and backplane connec tors. Y ou will feel a slight resistance as the connectors engage. CAUTION: If the resistance is too great, the module and back plane connec- tors may not be aligned. F orcing the module forward could damage the board or backplane connectors. If necess[...]
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Page 6
3Com Corporation 5400 Bayfront Plaza Santa Clara, Calif ornia 95052-8145 © 3Com Corporation, 1996. All rights reser ved. No par t of this documentation may be reproduced in any form or by any means or used to make any deriv ative work (such as translation, transformation, or adaptation) without permission from 3Com C orporation. 3Com Corporation r[...]