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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Garmin CNX80, 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 Garmin CNX80 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 Garmin CNX80. 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 Garmin CNX80 should contain:
- informations concerning technical data of Garmin CNX80
- name of the manufacturer and a year of construction of the Garmin CNX80 item
- rules of operation, control and maintenance of the Garmin CNX80 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 Garmin CNX80 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 Garmin CNX80, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Garmin 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 Garmin CNX80.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Garmin CNX80 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
GARMIN US A, Inc. 1200 Eas t 151 st St., Olath e, K ans as 66062 913/397 .8200 Fa x 913 /397.828 2 CNX80 User Ne wsletter Fourth Edition for the CNX80 5/4/04 Paul Damschen, CNX80 Certification Manag er In this edition: 1. Common Installation Problems with GPS/VHF Sy stems. 2. GTX 32 and 33 interface s. 3. Auto SUSP in Holding. 4. Operating on the f[...]
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Page 2
The CNX80 install manual states that the typic al loss at a connector crimp is 0.2 db. However we have se en many where the loss due to an old crimp that has worked loose or was poor quality to begin with can be 10 times this number, signific antly d egrading th e Nav/Comm or GPS performance. I n all cases, it is best to check the antenn a and coax[...]
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Page 3
You can also verif y the performan ce of the antenna b y che cking it with an antenna analyze r that measures antenna impedanc e through the coax and the VSWR (voltage standing wave ratio). Th e impedance should be ver y close to 50 ohms and the VSWR in the 2:1 to 3:1 range. If an y pa rt of this chain fails to show a 50 ohm impedance due to bad co[...]
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Page 4
loss if required before co mmencing the approach. If you do not need to los e altitude and just want to complete the course reversal for the approach, then you would press the SUSP key once established inbound. This eliminates the one turn in holding and allows the system to sequen ce to the final approach le g. The problem occurs when you attempt [...]
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Page 5
You may also have temporar y instances of LO I due to the fact that the engine is operatin g with a marginal constellation until it changes oper ational modes to fault detection only. We are considering methods to make this fring e operation more robust without sacrificing operational c apability . This will require review of the existing TSO requi[...]