!!全国热销 CDM55 手机综测仪/综合测试仪 CDM55
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电话：0755-29555176
手机：13826907086 QQ:646022850
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深圳市龙华镇金地梅陇镇花园1栋1单元13B
CMD55 CDM55 手机综测仪/综合测试仪适用于手机组装厂做手机耦合测试，适用
任何GSM手机，比8922M呼叫测试速
度快大大提高手机生产测试速度，提高工作
效率和产量.
CMD55可以测试GSM、DCS频段的射频指标，也有音频测试的功能，另外，可
以用CMD55和手机发起一个呼叫测试，测试协议侧的一些指标。
CMD55 耦合测试的主要参数：
功等级为GSM900：5，10，15 分别对应的信道为：1，62，124，
功等级为GSM1800：0，5，10 分别对应的信道为：512，698，885各三个等
级。
CMD55 藕合测试一般只测试功率等级5，，配一个天线耦合板直接连到仪器就可以
了.
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 signalling, 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 signal while the other one
provides all 8 timeslots for TCH signals.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 requ
