东莞精丰电子有限公司 联系电话: Q T: 0769-86850182 F: 0769-86850156 邮编:523710 地址:东莞塘厦镇塘龙东路63号美华中心0126 CMD55产品特点: ·是测量GSM及GSM1800移动电话的紧缩式单元 ·通过RS232,IEC/IEEE远控 ·前面板有多功能连接器 ·话音编码器/解码器可被集成 ·可选择安培表和伏特表 ·高敏感度二级RF输入 ·可改进为GSM、GSM1800及GSM1900测试 CharacteristicsThe CMD52 is a compact unit for testing GSM900 mobiles. The CMD55 is furthermore capable of testing GSM1800 (formerly named PCN orDCS1800) and GSM1900 (formerly named PCS or DCS1900) mobile phones. Both models are favourably priced and combine small dimensions with high measurement accuracy and speed.The testers range of capabilities includes all **ling, generator and measurement functions required for verifying the correct operation of the DUT (Device Under Test). Thanks to its fast go/nogo tests and accurate analysis using optional extensions, CMD52 and CMD55 are equally well suited for R&D, production and high-end service and production.Based on the wide-range know-how of Rohde & Schwarz in digital radiocommunication testing, which not least was obtained in developing type-approval test systems such as the GSM900 and GSM1800 system simulators, both CMD models are top- grade testers for present and future measurement applications.Test capabilitiesTo test mobile phones, the CMD simulates a GSM900, 1800 or 1900 base station. One of the two RF synthesizers available for this purpose delivers a continuous BCCH ** while the other one provides all 8 timeslots for TCH **s.The major test functions are :Mobile synchronizationLocation updateIncoming call setupOutgoing call setupMobile power level controlHandover (channel change, timeslot change)Peak power measurementHigh dynamic range burst analyzer (option CMD-B4 and CMD-B42)Spectrum due to Switching measurement (option CMD-B4 and CMD–B43)Spectrum due to Modulation measurement (option CMD-B4 and CMD–B43Timing Advance measurementSACCH measurement (eg RxLev, RxQual, power level)Echo testCall clearing by mobile phoneCall clearing by CMDDC current/voltage measurementsPhase and frequency error measurement (option CMD-B4)Measurement of power ramping as a function of time (option CMD-B4)Bit-error rate (BER) and Fast BER measurement (option CMD-B4)OperationOperation of the CMDis extremely user-friendly and requires no detailed GSM/PCN knowledge. The high-contrast, backlit LCD provided with softkeys on both sides
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进口快递清关机场国际快递的代理报关业务量也是比较多的,一般涉及国际快递收到短信被扣怎么处理?快递公司通知快递被海关扣了怎么办?海关要求正式报关怎么办?请与我联系: 快递公司说我的货需要按照一般贸易报关怎么处理?国际快递被扣要求我找代理报关行申报?收到以上相关通知,就是你**出了海关政策,要求你正式报关,这时你需要找一家代理报关行进行清关处理。 机场进口报关流程1. 收货人将全套清
玩具进口清关流程儿童玩具进口清关部联系人:刘先生万享供应链为您提供商检物流代理清关一条龙服务!如果您有任何疑问,请来电咨询,我们将高效、快捷、准确、歇诚地为您服务。=====================================================================万享供应链管理(上海)有限公司专业儿童玩具进口报关代理\木质玩具进口清关代理\塑料玩具进口报关服务
二手青贮机代理进口海运公司万享供应链管理(中国)有限公司Vanhang Supply Chain Management (Shanghai) Co.,Ltd.联系人:刘杨 进口农机报关行未来几年,中国农业农用机械和工业机器人年均增长率将分别高达18.1%和18.8%,这将是中国农用机械行业发展较快的两个领域 目前,我国农机行业存
印刷缓凝剂进口清关代理化工化学品查验工作在目前来说,主要是核查化工化学品中文化工公示标签,标签必须符合我国法律、法规及相关规定,必须以完全中文形式制作,且不得虚假、不得隐瞒。符合标准的,予以放行。不符合标准的,则暂扣货物进行标签整改。下属公司:广州进贸通供应链有限公司 / 上海虎桥进出口有限公司 / 广州万享进贸通供应链有限公司服务项目:一般贸易代理、G际贸易结算、进口物流配送、专业进口
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