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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Spectra LL300N, 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.
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The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Spectra LL300N 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 Spectra LL300N. 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.
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First and foremost, an user manual of Spectra LL300N should contain:
- informations concerning technical data of Spectra LL300N
- name of the manufacturer and a year of construction of the Spectra LL300N item
- rules of operation, control and maintenance of the Spectra LL300N 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 Spectra LL300N 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 Spectra LL300N, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Spectra 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 Spectra LL300N.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Spectra LL300N 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
LL300 © 2004, T rimble Navigation Limited. All rights reserved PN Q102874 041365_Umschlag_LL300.qxd 21.12.2004 12:40 Uhr Seite 1[...]
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Page 2
LL300 LL300 ON OFF HI/ MA N 9 11 8 13 14 6 12 14 14 7 HI/ MAN ON OFF LL300 6 2 5 4 3 1 Printed in Germany Q102874 10 041365_Umschlag_LL300.qxd 21.12.2004 12:40 Uhr Seite 2[...]
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Page 3
5 • Do not remove warning labels from the unit. • The laser is subject to class 3R (< 5mW , 600 ... 680 nm). • Due to the small diameter beam, watch and secure the course of the beam in remote areas. • Never look into the laser beam or direct it to the eyes of other people. • Always operate the unit in a way that prevents the beam from[...]
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Page 4
6 COMPONENTS Buttons 1 Power Button 2 Manual Button Control indicators 3 Leveling Indicator 4 Manual/HI-W arning Indicator 5 Battery Indicator Elements of the unit 6 Infrared Receiver (for remote control) 7 Rotor Cage 8 Sighting Guides 9 Beam Aperture/Prism Cap 10 Elastic Rubber Boot 1 1 Handle 12 Battery Door 13 5/8x 1 1 Tripod Mounts 14 Rubber Fe[...]
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Page 5
7 Charging the batteries The charger requires approx. 10 hours to charge empty rechargeable batteries. For this charging, connect the plug of the charger to the recharge jack of the unit. New or long-time out-of-use rechargeable batteries reach their best performance after being charged and recharged fi ve times. The batteries should only be charg[...]
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Page 6
8 OPERA TING EXAMPLES Determining the Height of Instrument (HI) The height of instrument (HI) is the elevation of the laser ’ s beam. The HI is determined by adding the grade-rod reading to a benchmark or known elevation. Set up the laser and place the grade rod on a job-site benchmark (BM) or known elevation. Slide the receiver up/down the grade[...]
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Page 7
9 In order to avoid offset errors, the receiver should be used close to the elevation where the laser has been set up. If a remote control is available, the up and down arrow buttons can be used for fi ne adjustments. LEVELING ACCURACY In fl uences on the leveling accuracy The overall accuracy of the unit can be in fl uenced by many factors: •[...]
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Page 8
10 If the unit is within its working accuracy limits (± 20”) the maximum difference from true level at 20 m (65 ft.) + 20 m (65 ft.) = 40 m (130 ft.) is 4 mm (3/16 inch). Repeat the above steps for “minus X” and for “plus-” and “minus Y”, so that a measurement for all four axes of the unit have been performed. The accuracy of the det[...]
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Page 9
11 SPECIFICA TIONS Leveling Accuracy 1, 3 : < ± 18 arc seconds, < ± 2.6 mm/30 m (< ± 3/32in./100 ft) Ro ta tion Speed: 600 rpm Operating Range (Diameter 1,2 : 400 m (1315 feet) Laser T ype: 635 nm Laser Class: Class 3R, <5mW Self-Leveling Range: approx. ± 8% (approx. ± 4,8°) Leveling T ime: approx. 30 sec Leveling Indicators: LED [...]