ITU-T F.112-1988 海事卫星移动业务中 50baud 起止式电报传输的质量目标 Quality objectives for 50-baud start-stop telegraph transmission in the maritime mobile-satellite s

pdf标准 ITU-T F.112-1988 海事卫星移动业务中 50baud 起止式电报传输的质量目标 Quality objectives for 50-baud start-stop telegraph transmission in the maritime mobile-satellite s

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ITU-T F.112-1988 海事卫星移动业务中 50baud  起止式电报传输的质量目标 Quality objectives for  50-baud start-stop telegraph transmission in the maritime mobile-satellite s 第 1 页 ITU-T F.112-1988 海事卫星移动业务中 50baud  起止式电报传输的质量目标 Quality objectives for  50-baud start-stop telegraph transmission in the maritime mobile-satellite s 第 2 页 ITU-T F.112-1988 海事卫星移动业务中 50baud  起止式电报传输的质量目标 Quality objectives for  50-baud start-stop telegraph transmission in the maritime mobile-satellite s 第 3 页
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国外分类,ITU,ITU-T(电信标准分局),itu,海事,卫星,移动,业务,50baud,起止,电报,传输,质量,目标,quality,objectives,for,baud,start,stop,telegraph,transmission,in,the,maritime,mobile,satellite

INTERNATIONAL TELECOMMUNICATION UNION )45 4 & TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU /0%2!4)/.3 !.$ 15!,)49 /& 3%26)#% -/"),% 3%26)#% 15!,)49 /"*%#4)6%3 &/2  "!5$ 34!24 34/0 4%,%'2!0( 42!.3-)33)/. ). 4(% -!2)4)-% -/"),% 3!4%,,)4% 3%26)#% )45 4 Recommendation & (Extract from the "LUE "OOK) NOTES 1 ITU-T Recommendation F.112 was published in Fascicle II.4 of the Blue Book. This file is an extract from the Blue Book. While the presentation and layout of the text might be slightly different from the Blue Book version, the contents of the file are identical to the Blue Book version and copyright conditions remain unchanged (see below). 2 In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. © ITU 1988, 1993 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. Recommendation F.112 Fascicle II.4 - Rec. F.112 QUALITY OBJECTIVES FOR 50-BAUD START-STOP TELEGRAPH TRANSMISSION IN THE MARITIME MOBILE-SATELLITE SERVICE The CCITT, considering (a) that proper interworking of this telegraph transmission with the international telegraph services must be ensured; (b) CCITT Recommendation F.10 concerning character error rate for telegraph communications, unanimously recommends that, for the coast-earth station-to-mobile terminal and mobile terminal-to-coast-earth station links, sufficient margin should be included to overcome adverse propagation conditions. The objective should be that propagation conditions should not contribute any character errors for at least 95% of all calls with mobile terminals within the satellite service area. With the exception of blockage effects, propagation conditions should not contribute more than 8 errors in 100 000 characters with a 99% confidence level for mobile terminals at the edge of the service area. Note - This Recommendation corresponds to CCIR Recommendation 552. Fascicle II.4 - Rec. F.112 1

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