★频率范围：1.9GHz PHS专用设备
★有内置CODEC,且通过附件可实现模拟器和CS/PS间的通信测试
★为时序测试设置参数和时序
★可轻易定义并实现第3层半正交时序测试
★时序和参数可存储在3.5英寸软盘中
★通过WINDOWS和菜单选择提供易于使用的操作系统
MD1620C 频谱分析仪技术指标
Tx Frequency range 1895.15 1917.95 MHz
Frequency setting interval 300KHz steps
Number of carriers 2 carriers
Transmission level range 13 to 83 dBμV per carrier
Transmission level accuracy ±2dB(24 to 83dBμV)at 25°±5℃
Rx Frequency range 1895.15 to 1917.95MHz
Frequency seeting interval 300KHz steps
Number of carriers 1carrier
Receiving level range 77to 149dBμV
Receiving error rate BER≤1*10^-8 at 77dBμV
Reference oscillator Frequency range 10MHz
Stability Aging rate:2*10^-8/day, 2*10^-7/year Temperature characteristics:
±5*10^-8(referred at 25℃)
External reference input signal 10MHz,TTL level
External control GPIB:SH1,SR1,DC1,C0,AH1,RL1,DT0,T5,PP0,L4
Rs-232C bit rate:600,1200,2400,4800bps
Flppy 3.5-inch floppy
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