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通信测试设备制造商正在争先恐后地把模拟和数字移动电话表征能力纳入一部仪器内。码分多址（ＣＤＭＡ）调制技术却使这些厂商面临复杂的局面，因为扩频信号不能用与调频（ＦＭ）和时分多址（ＴＤＭＡ）信号相同的技术来测量。但是，Ｈｅｗｌｅｔｔ－Ｐａｃｋａｒｄ公司的ＨＰ?
Communications test equipment manufacturers are scrambling to incorporate analog and digital mobile phone characterization capabilities into one instrument. Code division multiple access (CDMA) modulation techniques complicate these vendors because spread spectrum signals can not be measured using the same techniques as FM and TDMA signals. However, Hewlett-Packard’s HP?