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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of JVC VN-H157WPU, 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-H157WPU 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-H157WPU. 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-H157WPU should contain:
- informations concerning technical data of JVC VN-H157WPU
- name of the manufacturer and a year of construction of the JVC VN-H157WPU item
- rules of operation, control and maintenance of the JVC VN-H157WPU item
- safety signs and mark certificates which confirm compatibility with appropriate standards
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Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of JVC VN-H157WPU 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-H157WPU, 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-H157WPU.
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Table of contents for the manual
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Page 1
1 LST1238-001B ☞ Continued overleaf Safety precautions The power rating is AC 24 V , 50/60 Hz or PoE. Use the correct voltage. Always use the AC 24 V power source that is insulated from the primary power supply . A level of supplied power that exceeds the ratings may result in failures, smoke or fire. If the camera breaks down, turn off the power[...]
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Page 2
2 ☞ Continue to next page Note Read before starting work. • Special skills are required to install this unit. • If you install the camera on a rainy day , be sure that rainwater does not get inside the camera. • The camera’s mass is approx. 2.3 kg (including the mounting bracket). T ake care to avoid dropping the camera during installatio[...]
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Page 3
3 ☞ Continued overleaf 5 Adjust the rotation angle of the camera (When the camera is mounted on the wall only) Adjust the rotation angle of this camera to level the image of the camera. The range of rotation adjustment is about 1 10 degrees. 4 Rotation angle Note • Do not hold the lens section when adjusting the direction of the camera. Applyin[...]
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Page 4
4 LST1238-001B Specifications External dimensions (unit: mm) * The specifications and appearance of this unit are subject to change for purposes of improvement without prior notice. Camera section Image sensor 1/3-inch Square-Pixel Progressive Scan CMOS (elementary color filter) Effective pixels Approximately 2,120,000 pixels 1944 (H) × 1092 (V) M[...]