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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Princeton R928, 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 Princeton R928 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 Princeton R928. 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 Princeton R928 should contain:
- informations concerning technical data of Princeton R928
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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 Princeton R928 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 Princeton R928, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Princeton 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 Princeton R928.
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Table of contents for the manual
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Page 1
Ver 2.0 Operating Instructions for PMT Tube P2 15 Discovery Way, Acton, MA 01720 Phone: (978)263-3584, Fax: (978)263-5086 Web Site: www.piacton.com[...]
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Page 2
Extended Red, High Sensitivity , Multialkali Photocathode 28mm (1-1/8 Inch) Diameter , 9-Stage, Side-On GENERAL FEA TURES Parameter Description/V alue Unit Spectral Response The R928 and R955 feature extremely high quantum efficiency , high current amplification, good S/N ratio and wide spectral re- sponse from UV to near infrared. The R928 employs[...]
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Page 3
MAXIMUM RA TINGS (Absolute Maximum V alues) Parameter V alue Supply V oltage Between Anode and Cathode Between Anode and Last Dynode 1250 250 0.1 –80 to +50 Vdc Vdc mA Average Anode Current Unit Ambient T emperature CHARACTERISTlCS (at 25 ) NOTES Parameter Min. Max. R928 T yp. Cathode Sensitivity Anode Dark Current F After 30 minute Storage in th[...]
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Page 4
J: K: L: The electron transit time is the interval between the arrival of delta function light pulse at the entrance window of the tube and the time when the anode output reaches the peak amplitude. In measurement, the whole photo- cathode is illuminated. Also called transit time jitter . This is the fluctuation in electron transit time between ind[...]
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Page 5
PHOT OMUL TlPLlER TUBES R928, R955 TPMS1001E06 MAY. 1997 Figure 6: Dimensional Outline and Basing Diagram (Unit : mm) Figure 7: Optional Accessories (Unit : mm) TPMSA0008EA 1 2 4 3 5 7 6 8 9 10 K DY1 DY2 DY3 DY4 DY5 DY6 DY7 DY8 DY9 P DIRECTION OF LIGHT 28.5 1.5 8MIN. T9 BULB PHOTOCATHODE 24MIN. 49.0 2.5 80MAX. 94MAX. 32.2 0.5 11 PIN BASE JEDEC No. [...]