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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Casio 2172, 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 Casio 2172 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 Casio 2172. 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 Casio 2172 should contain:
- informations concerning technical data of Casio 2172
- name of the manufacturer and a year of construction of the Casio 2172 item
- rules of operation, control and maintenance of the Casio 2172 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 Casio 2172 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 Casio 2172, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Casio 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 Casio 2172.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Casio 2172 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
2172-1 Module No. 2172 GETTING ACQUAINTED Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to carefully read this manual and keep it on hand for later reference when necessary. About this manual • Button operations are indicated using the letters shown in the illustration. • Each section of [...]
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Page 2
2172-2 5 63 0 20 00 0 15 1 4. Press A twice to exit the setting screen. • The day of the week is automatically displayed in accordance with the date (year, month, and day) settings. • The year can be set in the range of 2000 to 2039. • The watch ’ s built-in full automatic calendar automatically makes allowances for different month lengths [...]
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Page 3
2172-3 Surface Depth = 1.0m/4ft. 1 minute 30 seconds 1 minute 5 seconds 2 minutes 50 seconds Submerged On the Surface Valid Dive 1 minute 30 seconds Valid Dive Understanding the Diving Mode Screen • The Surface screen appears while you are on the surface, while the Submerged screen appears while you are submerged. • The dive time value shows th[...]
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Page 4
2172-4 To delete log data Holding down A for about two seconds in the Recall Mode or Dive Profile Mode deletes all the log data and dive profile data for the currently displayed record. • Deleting log data while a surface interval timing operation is in progress stops the surface interval timing operation. Using Log Data with Dive Tables ■ Make[...]
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Page 5
2172-5 Figure 1: Tissue Nitrogen Uptake Graph Saturation Value Halftime (Saturation) Nitrogen level Half the time it takes to achieve maximum saturation. Time Figure 2: Tissue Nitrogen Elimination Graph Saturation half value Half the time it takes to achieve elimination of nitrogen. Saturation Value Halftime (Saturation) Nitrogen level Time Saturat[...]
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Page 6
2172-6 As can be expected according to the nitrogen uptake characteristics illustrated in Figure 1, the left side of the graph climbs steeply when submersing, with the upward slope flattening out as you move to the right. Conversely, the left side of the graph when surfacing drops steeply and flattens out as you move to the right, as indicated by t[...]
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Page 7
2172-7 Repeat Diving and the Nitrogen Graph • The boundary shown here is an example intended for reference purposes only. Repeat diving causes nitrogen to build up in slow tissue. Even if each dive is relatively shallow, repeat diving over a number of days can cause safety problems due to build up of nitrogen in the body. Slow tissue in particula[...]
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Page 8
2172-8 BACKLIGHT The backlight uses an EL (electro- luminescent) panel that causes the entire display to glow for easy reading in the dark. The watch ’ s auto light switch automatically turns on the backlight when you angle the watch towards your face. • The auto light switch must be turned on (indicated by the auto light switch on indicator) f[...]
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Page 9
2172-9 REFERENCE This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch. Auto Return Features • If you leave a setting screen (one with flashing digits or other settings) on the display for two or three minutes wit[...]
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Page 10
2172-10 Warning! • The settings made by a proper automatic or manual 0 . 0 l ( 0 F ) reset are based on the actual temperature and other conditions under which you are diving at that time, and so they are more accurate. • The default zero depth pressure values is based on standard diving conditions that do not take into account actual diving co[...]
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Page 11
2172-11 Backlight Precautions • The electro-luminescent panel that provides illumination loses power after very long use. • The illumination provided by the backlight may be hard to see when viewed under direct sunlight. • The watch will emit an audible sound whenever the display is illuminated. It does not indicate malfunction of the watch. [...]