Disclosure to Promote the Right To Information

Transcription

1 इ टरन ट म नक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live प0र 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS (1985): Quartz Crystal Units Used for Frequency Control and Selection, Part 2: Series AA for Oscillators, Section 17: Quartz Crystal Unit Type AA-17 [LITD 5: Semiconductor and Other Electronic Components and Devices]! न $ एक न' भ रत क +नम-ण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ च0र य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen

2

3

4 U DC IS : \- Part 2iSec I Is1 Indian Standard SPECIFICATION FOR QUARTZ CRYSTAL UNITS USED FOR FREQUENCY CONTROL AND SELECTION PART 2 SERIES AA FOR OSCILLATORS Section 17 Quartz Crystal Unit Type AA-l 7 0. General - Shall be read in conjunction with IS : 8271 (Part I)-1981 Specification for quartz crystal units used for frequency control and selection: Part 1 General requirements and tests (first revision ). 1. Outline and Dimensions - Holder outline shall conform to type AA [ see IS : 4530 (Part 2)-l 983 Specification for crystal unit holders: Part 2 Metal, solder seal, two pin crystal unit holders types AA and AB' Marking - See 8 of IS : 8271 (Part I) Construction and Workmanship - See 7 of IS : 8271 (Part l) Test Schedule and Detail Requirements 4.1 General Conditions for Test - See 9.2 of IS : 8271 (Part I) Test Schedule - The sequence and grouping of type, routine and acceptance tests shall be as according 9.1 of IS : 8271 (Part I)-1981, 4.3 Detail Requirements - The detail requirements applicable to this particular type of crystal unit shall be as specified in Table I - TABLE 1 DETAIL REQUIREMENTS OF QUARTZ CRYSTAL UNIT TYPE AA-17 Chalscteristics Requirements a) Type of holder AA ( see 1 ) b) Frequency range 0.8 to 20 MHz c) Frequency tolerance: Operating temperature ranga I 50 ppm d) Load capacitance Infinity e) Mode of oscillation Fundamental f) Operating temperature range -65 to -i-105 C g) Test set, calibration values and rated drive level See Table 2 h) Capacitance shunt 7 pf (Max) j) Resonance resistance See Table 3 k) Shock [ As per 9.15 (Severity A) of Below 2 MHz 2 MHz and above IS : 8271 ( Part 1 ) ) Frequency change permitted +lo wn 2) Resonance resistance change permitted + 15 percent If: 5 twm * 10 percent 1 m) Vibration [ As per ( Severity A ) of Below 2 MHz 2 MHzandabove ls : 8271 (Part I)-1981 ) 1) Frequency change permitted +I 0 ppm 21 Resonance resistance change permitted +I 5 percent + 5 wm rt IO percent n) Temperature cycling: Below 2 MHz 2 PJiHz and above 1) Frequency change permitted +I0 ppm :i: 5 ppm 2) Resonance resistance change permitted *15 percent -i- 10 percent PI Temperature run Below 2 MHz 2 MHz and above 1) Frequency change permitted +lo ppm.f: 5 ppm 2) Resonance resistance change permitted &I5 percent -1: IO percent q) Agcing: Frequency change permitted 5 ppm Adopted 24 December 1985 Q3 July 1986, ISI Gr 1 INDIAN STANDARDS INSTITUTION MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI

5 IS : 8271 ( Part 2/Set 17 ) TABLE 2 TEST SET RATED DRIVE LEVEL AND CALIBRATION VALUES C Table 1 (cd 1 SI No. FReaq,uge,nCY Calibration Values Rated Test c *----_--_-_-_---~ Drive Set MHz Re$htFsce Crystal Current Resistor Voltage Level ma Drop Volt mw (1) (2) (3) (4) (5) (6) (7) i) ~From 0 8 to ii) From 1 5 to o*o+2 0 iii) From 2 25 to TS-330/TSM iv) From 3 4 to ~0+2 0 v) From 5 1 to _+2 0 vi) Over 7 5 to vii) Over 10 to *ofl.O viii) Over 15 to *0_+ 1 0 TS-683/TSM TABLE 3 RESONANCE RESISTANCE C Table 1 (j) I Maximum Resonance Resistance ohms (1) (2) From 0 8 to From 0 85 to From 0 9 to Over 1 to Over 1 12 to Over 1 25 to Over 1 37 to Over 1 5 to Over 1 62 to Over 1 76 to Over 1 87 to Over 2 to Over 2 12 to Over 2 25 to Over 2 6 to 3 90 Over 3 to Over 3 4 to Over 3 75 to 4 45 Over 4 to 5 37 Over 5 to 7 25 Over 7 to Over IO to Over 15 to EXPLAN~ATORY NOTE This standard (Part 2/&c 17) covers the requirements of crystal unit, quarts, style QC-14 of JSS 50905(1971) Detail specification for crystal unit, quartz styles QC-IO, QC-I 1, QC-14, QC-15, QC-16, QC-17, QC-18 and QC-19, issued by the Directorate of Standardization, Ministry of Defence (India), New Delhi. 2 Printed at~printrade, New Delhi, India