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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of JVC VN-H257VPU, 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 JVC VN-H257VPU 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 JVC VN-H257VPU. 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 JVC VN-H257VPU should contain:
- informations concerning technical data of JVC VN-H257VPU
- name of the manufacturer and a year of construction of the JVC VN-H257VPU item
- rules of operation, control and maintenance of the JVC VN-H257VPU 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 JVC VN-H257VPU 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 JVC VN-H257VPU, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the JVC 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 JVC VN-H257VPU.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the JVC VN-H257VPU 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
1 LST1236-001D ☞ Continued overleaf Safety precautions The power rating is AC 24 V , 50/60 Hz/PoE (VN-H257VPU) or PoE (VN-H237VPU). Use the correct voltage. Always use the AC 24 V power source that is insulated from the primary power supply . (VN-H257VPU) A level of supplied power that exceeds the ratings may result in failures, smoke or fire. If[...]
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Page 2
2 ☞ Continue to next page Remove the dome cover and the inner dome. 1 2 Knob (two locations) Dome cover Fall prevention wire Wrench (supplied) Inner dome Memo • When you remove the dome cover , use the supplied wrench. • T o remove the inner dome, turn it 45 degrees and grasp the inner dome near the catches (two locations). It will come off e[...]
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Page 3
3 Image Adjustment Adjust images by watching them on the monitor . * The illustration of the camera directly mounted on the ceiling is used. The same procedures are performed when mounting the camera on the wall with the cables pulled out. Note • Before touching the camera body , make sure you touch the metal surface of the [MONITOR] terminal fir[...]
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Page 4
4 LST1236-001D Specifications VN-H257VPU/VN-H237VPU External dimensions (unit: mm) * The specifications and appearance of this unit are subject to change for purposes of improvement without prior notice. VN-H257VPU VN-H237VPU Camera section Image sensor 1/3-inch Square-Pixel Progressive Scan CMOS (elementary color filter) Effective pixels Approxima[...]