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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of 3Com PLM Series, 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 PLM Series 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 PLM Series. 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 PLM Series should contain:
- informations concerning technical data of 3Com PLM Series
- name of the manufacturer and a year of construction of the 3Com PLM Series item
- rules of operation, control and maintenance of the 3Com PLM Series 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 PLM Series 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 PLM Series, 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 PLM Series.
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 PLM Series 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
PLM ™ Series Powered Loudspeaker Management ™ systems Rev. 1.0.5 Item no. NCG-PLM Network Configuration Guide[...]
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Page 2
2 PLM S eries Network C onfiguration Guide 1 CON T EN T s 1 CONTENTS .................................................................................................................................................2 2 INTROD UCTION .....................................................................................................................[...]
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Page 3
PLM S eries Network C onfiguration Guide 3 2 .1 O v e r v i e w Thank you for choosing the L ab.gruppen PLM Series of Power ed Loudspeak er Management syst ems f or your sound rein forcement needs. We are confident that you will be p leased with the per formance, unique feat ures, configuration flexibility , reliabili t y , and long - term dura[...]
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Page 4
4 PLM S eries Network C onfiguration Guide 2 INT RODUC T ION From the Star t menu, open the C ontrol Panel. 1 . Under Net work and Int ernet, cho ose V iew Network Status and T asks. Underneath Net work, to the right of Connection 2. / Loc al Area Connection, cho ose View Status. In the d ialog box, click on Proper ties, and click 3. Continue in t[...]
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Page 5
PLM S eries Network C onfiguration Guide 5 PL M S eRIe S a ND Da N T e Ne T w ORk INg Fe aT URe S 3 3. 1 Net working Over view Designed for use on an Ethernet ne t work, the PLM Series Po wered Loud speak er Management system allows configur ation, control, and monitoring of mul - tiple PL M Series devices from a P C running DLC PL M Edition soft[...]
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Page 6
6 PLM S eries Network C onfiguration Guide 4. 1 SPF Ov e r view Critical network c onfigurations (such as those trans - por ting audio signals ) should avoid “Single Point of F ailur e ” (S PF ) scenarios to the great est extent possible. S PF failur es can occur when a net work has been designed in such a way that failu re of a single par t [...]
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Page 7
PLM S eries Network C onfiguration Guide 7 a v OID INg SINgLe P OI N T OF FaIL URe ( S PF ) IS SUe S 4 4. 1. 1 Sig nal t y pe r ed und anc y Use of this topolo gy allows a PL M to receive audio and control signals from a source device using dif fer - ent output t y pes, i.e. a device which can output b oth analog and A ES sig nals simult aneously [...]
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Page 8
8 PLM S eries Network C onfiguration Guide 5.2 PLM Series T o pology O ve r v i ew T h a n k s t o t h e a u t o - s e n s e a n d a u t o - u p l i n k f e a t u r e s o f the PL M Ser ies ’ Ethernet por ts, connecting multiple units is a simple task. A free -topolog y net work c an be implement ed easily , including external switches or hubs a[...]
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Page 9
PLM S eries Network C onfiguration Guide 9 Ne T wORk CONNe CT IONS a ND T OP OL Og Ie S 5 5. 2. 3 Dai sy- c hai ne d swi tc he s In such a topolog y , eac h group of PLM Series units (t ypically those inside the same rack) have a switch inside the rack to which ea ch has a direct c onnection. These “loc al” switches are c onnected in a daisy c[...]
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Page 10
10 PLM Series Net work Configuration Guide may be to place a group of loc al switches in e ach “z o n e ”, w h i c h a r e fi r s t i n t e r c o n n e c t e d t o f o r m a “ l o c a l area network” (e.g. Stage Lef t). These area net works are then inte rconnected with a main back bone. A different topology for the main b ackbone than th[...]
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Page 11
PLM S eries Network C onfiguration Guide 11 5.4 PLM / Dante Net work Size Limitations The inf orm ation below is provided to give an over view of the terminology and concepts that are used w hen describing a PL M network and its functions. Fur ther explanations of terminolog y used can b e found in section 7 , Re fer en ce s an d Defi ni tio ns .[...]
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Page 12
12 PLM Series Net work Configuration Guide for use in larger venues ; however local legal restrictions may appl y in some countries. Please contact your La b. gruppen distributor for advice if necess ar y . 5. 6 Improving Wir ele ss A c cessibility Pri mar y an d Se co nda r y PC I n a p p l i c a t i o n s w h e r e m a i n t a i n i n g c o n t [...]
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Page 13
PLM S eries Network C onfiguration Guide 13 Co de Point (DSCP) pro tocol, and it must implement strict pr iorit y control over at least the top t wo priorit y leve ls. (3 Com is an example of a provider that t ypi - cally prioritizes only the top level.) See Refer ences and Defi nitions in section 7 for more on DSC P . Int ern al switch forwardin[...]
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Page 14
1 4 P LM Series Net work Confi guration Guide 6 Ne T wORk H a RD w a R e Re COMMe NDaTIONS only guarantees the per formance of the Ether Con for 1 0 0 0 mating cycles. In order to provide a more reliable long -term so lu- tion, L ab.gruppen recommends the circu lar metal push - pull connector from LEMO ® . T hese c onnectors are rated to withstan[...]
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Page 15
PLM S eries Network C onfiguration Guide 15 RE FER ENCE s A ND DEFINIT IONs 7 The following definitions will help the user better underst and some sp ecific terms used in this guide, and in other PLM Series technical documentation. L ab.gruppen has made every effor t to make sur e that the inf ormation here is correct and accurate. Te r m Descri[...]
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Page 16
16 PLM Series Net work Configuration Guide 8 A DDIT IONA l INFOR m ATION Con tac t: Lab.gruppen AB Faktorvägen 1 SE-434 37 Kungsbacka SWEDEN Phone: +46 300 56 28 00 Fax: +46 300 56 28 99 plmsupport@labgruppen.com info@labgruppen.com www.labgruppen.com Intercooler and Class TD are national and/or international registered trademarks of Lab.gruppen [...]
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Page 17
L ab .gr upp en a b • S weden interna tion aL conta ct • info@L a bgru ppen.co m uS c ontact • infouS@tceLectronic. com ww w.labg ruppen .com[...]