1.C2101的“错误02”的原理频率合成器(IC0801)具有PLL锁定检测电路,由它的LD脚输出锁定状态,高电平锁定有效,同时,RFT3100的PLL锁定指示PD-OUT,高电平锁定有效,当这两个有一个为低电平时,收发中频锁相环不能实现正常的功能,锁定为0。使MSM3100的SYNLOCK脚为低电平,LCD显示“错 1.C2101 Principle of “Error 02” The frequency synthesizer (IC0801) has a PLL lock detection circuit which outputs the lock status by its LD pin and is active at high level. At the same time, the RFT3100’s PLL lock indication PD-OUT, Ping lock effective, when the two have a low level, the receiving and dispatching IF PLL can not achieve normal function, locked to 0. MSL3100 SYNLOCK pin is low, LCD display "wrong