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CMU200的基本设置及测试基本操作

-----CDMA2000

1. 2.

2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8

CMU200仪器简介 ................................................................................................ 2 CMU200各功能模块相关设置简介 .................................................................... 2

CMU手动测试前基本参数设置: ··························································· 2 SERVICE.CFG ·················································································· 3 BSSIGNAL ······················································································ 4 AF/RF ··························································································· 4 NETwork ························································································ 5 NETworkstandard ············································································ 5 1stServiceClass ············································································ 6 呼叫并建立连接 ············································································· 6

3.

3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9

具体测试项目 ..................................................................................................... 7

接收机灵敏度和动态范围 ································································· 7 频率准确度 ················································································· 10 波形质量和频率准确度 ·································································· 11 最大射频输出功率 ········································································ 12 最小发射功率 ·············································································· 14 门控输出功率 ·············································································· 14 开环输出功率时间响应 ·································································· 17 发射机带内杂散抑制 ····································································· 18 码 域功率 ··················································································· 18

3.10 单频抗扰度 ················································································· 19 3.11 互调杂散响应衰减 ········································································ 20 3.12 接收机传导性杂散发射 ·································································· 21 3.13 闭环功率控制 ·············································································· 22

4. 待定 ................................................................................... 错误！未定义书签。

1. CMU200仪器简介

CMU200是Rohde & Schwarz公司研制出的移动台测试仪，可以测试NMT－450，US Celluar，Korean Celluar，TACS ，JTACS，North American 700，Secondary 800，US PCS，Korean PCS，1800MHz，IMT-2000等各个Band Class的移动台；可以进行CDMA One ，CDMA2000 1 X，WCDMA，Bluetooth，TDMA，GSM等各种系统的测试。对于移动台的测试，测试项目基本含盖EIA/TIA－98D协议中的所有测试项，仪器本身已经按照98D协议要求设置了各项指标的协议要求，使用者可以一次设定所有测试所有测试项目的测试条件。此外CMU200与计算机进行通信的接口很丰富，包括GPIB，串口，PCMCIA接口等等，而且CMU200可以连接许多外设，如键盘等便于测试工作的进行。CMU200是测试移动台性能比较重要的工具之一

图（1）是仪器的外观，上边用红线标明的是基本按键说明。将移动台和测试仪CMU200连接起来，可以用直连电缆，也可以利用屏蔽盒将移动台和测试仪连接起来。

2. CMU200各功能模块相关设置简介

2.1 CMU手动测试前基本参数设置:

1、将CMU200安放在0~50℃工作温度环境的实验室。接上后面板220V交流电源，打开

仪器前面板的ON按钮，仪器开始进入自检状态和启动状态，然后进入正常的工作状态,为了保证仪器内部温度与环境温度一致，确保参数稳定，一般要求仪器开机预热30分钟钟～60分钟。

3 仪器初始化后，会进入如下图(2)所示界面，在此界面可以选择不同的频段类别。以800M

手机为例。

选择右测的按键，可以进入相应的界面，选择

键，进入图3的界面：

要进行测试，首先要使CMU200对手机呼叫并建立连接，必须正确设置图3红线框中的

、

置。

、

、

、

、

六项基本设

2.2 SERVICE.CFG

按下

键，进入图4选择无线配置模式，例如c218手机主要支持无线配置1、

2、3、4、5的解调，通过红框内的各项来设置各种无线配制我们一般选择无线配置1，建立呼叫。