【英文标准名称】:SystemInformationforSatelliteDistributionofDigitalTelevisionforCableandMMDS
【原文标准名称】:电缆和MMDS用数字电视的卫星分布系统信息
【标准号】:ANSI/SCTE57-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011-01-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Cablecommunication;Cables;Communicationtechnology;Digitaltelevision;Distribution;Information;Satellites;Transmissiontechnique
【摘要】:Definesastandardforsysteminformation(SI)compatiblewithMPEG-2compliantdigitalmultiplexbitstreamsconstructedinaccordancewithISO/IEC13818-1(MPEG-2)andtransmittedoversatellitefordistributiononcableandMMDS.
【中国标准分类号】:M35
【国际标准分类号】:33_060_40
【页数】:
【正文语种】:英语


Product Code:SAE J1469
Title:Air Brake Actuator Test Procedure, Truck-Tractor, Bus, and Trailers
Issuing Committee:Truck And Bus Brake Actuator Committee
Scope:This SAE Recommended Practice provides procedures and methods for testing service, spring applied parking, and combination brake actuators with respect to durability, function, and environmental performance. A minimum of five test units designated A, B, C, D, and E are to be used to perform all tests per 1.1 and 1.2.Test ProceduresLeak rate-parking and service chambers (Section 4)Chamber volume-parking and service chambers (Section 5)Maximum release and hold-off pressure-parking chamber (Section 6)Force output and stroke-parking chamber (Section 7)Force output and stroke-service chamber (Section 8)Low temperature leakage-parking and service chambers (Section 9)Low temperature maximum release and hold-off pressure (Section 10)Low temperature force output-parking chamber (Section 11)Low temperature operational test-service chamber (Section 12)Corrosion resistance-parking and service chamber (Section 13)Mechanical back-off release mechanism (Section 14)Proof pressure test-parking and service chambers (Section 15)Cycle test-parking chamber (Section 16)Cycle test-service chamber (Section 17)Elevated temperature cycle test-parking and service chambers (Section 18)Vibration test (Section 19.1)Test Sequence ChartThe test sequence as charted in the òTest Sequence Chartó shall be mandatory (see Figure 1).PurposeThis document provides uniform procedures and methods for laboratory testing of brake actuators used in air brake systems.?TEST SEQUENCE CHART