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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Philips BGY148A, 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 Philips BGY148A 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 Philips BGY148A. 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 Philips BGY148A should contain:
- informations concerning technical data of Philips BGY148A
- name of the manufacturer and a year of construction of the Philips BGY148A item
- rules of operation, control and maintenance of the Philips BGY148A 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 Philips BGY148A 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 Philips BGY148A, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Philips 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 Philips BGY148A.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Philips BGY148A 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
DA T A SH EET Product specification Supersedes data of 1997 Jul 14 1998 May 13 DISCRETE SEMICONDUCT ORS BGY148A; BGY148B HF amplifier modules b ook, halfpage M3D188[...]
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Page 2
1998 May 13 2 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B FEA TURES • Single 6 V nominal supply voltage • 3 W output power • Easy control of output power by DC voltage • Silicon bipolar technology • Standby current less than 100 µ A. APPLICA TIONS • Portable communication equipment operating in [...]
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Page 3
1998 May 13 3 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B CHARACTERISTICS Z S =Z L =5 0 Ω ;P D = 10 mW; V S = 6 V; V C ≤ 3.5 V ; T mb =2 5 ° C; unless otherwise specified. SYMBOL P ARAMETER CONDITIONS MIN. TYP . MAX. UNIT f frequency range BGY148A 400 − 440 MHz BGY148B 430 − 488 MHz I Q total quiesc[...]
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Page 4
1998 May 13 4 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B Fig.3 Load power as a function of control voltage; BGY148A; typical values. Z S =Z L =5 0 Ω ; P D = 10 mW; V S = 6 V; T mb =2 5 ° C. handbook, halfpage 01 P L (W) 4 3 5 0 4 MGD553 2 V C (V) 3 2 1 400 MHz 440 MHz Fig.4 Efficiency as a function of lo[...]
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Page 5
1998 May 13 5 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B Fig.7 Control voltage and input VSWR as functions of frequency; BGY148A; typical values. Z S =Z L =5 0 Ω ; P D = 10 mW; V S = 6 V; P L = 3 W; T mb =2 5 ° C. handbook, halfpage 4 V C (V) VSWR in 3.0 2.5 2.0 1.5 1.0 460 440 f (MHz) 400 380 3 2 1 0 MG[...]
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Page 6
1998 May 13 6 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B Fig.10 Load power as a function of control voltage; BGY148B; typical values. Z S =Z L =5 0 Ω ; P D = 10 mW; V S = 6 V; T mb =2 5 ° C. handbook, halfpage 01 P L (W) 4 3 5 0 4 MGD559 2 V C (V) 3 2 1 430 MHz 488 MHz Fig.11 Efficiency as a function of [...]
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Page 7
1998 May 13 7 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B Fig.14 Control voltage and input VSWR as functions of frequency; BGY148B; typical values. Z S =Z L =5 0 Ω ; P D = 10 mW; V S = 6 V; P L = 3 W; T mb =2 5 ° C. handbook, halfpage 4 V C (V) VSWR in 3.0 2.5 2.0 1.5 1.0 500 480 f (MHz) 440 420 3 2 1 0 M[...]
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Page 8
1998 May 13 8 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B SOLDERING The indicated temperatures are those at the solder interfaces. Advised solder types are types with a liquidus less than or equal to 210 ° C. Solder dots or solder prints must be large enough to wet the contact areas. Soldering can be carrie[...]
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Page 9
1998 May 13 9 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B Dimensions in mm. Fig.18 SOT421A footprint. handbook, full pagewidth MGK391 8.45 0.6 2.7 22.6 2 2.4 1 2.6 0.4 0.8 7.48 15.1 20.18 DET AIL 2 0.1 0.1 2.7 1.5 1.7 0.5 0.7 1.1 1.1 2.9 DET AIL footprint metallization solder area. handbook, full pagewidth M[...]
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Page 10
1998 May 13 10 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B P ACKAGE OUTLINE UNIT cD dE e REFERENCES OUTLINE VERSION EUROPEAN PROJECTION ISSUE DATE IEC JEDEC EIAJ mm 5.08 7.62 0.56 0.46 3.0 2.6 0.30 0.20 22.1 21.7 2.4 2.0 13.4 13.0 0.7 0.3 0.25 0.15 b A DIMENSIONS (mm are the original dimensions) SOT421A 97-0[...]
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Page 11
1998 May 13 11 Philips Semiconductors Product specification HF amplifier modules BGY148A; BGY148B DEFINITIONS LIFE SUPPORT APPLICA TIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or sel[...]
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Page 12
Internet: http://www.semiconductors.philips.com Philips Semiconductors – a worldwide company © Philips Electronics N.V. 1998 SCA60 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or cont[...]