二手GPS卫星信号源MSG2050 MSG-2050 is a signal generator designed for generating the simulation signal of GPS (Global Positioning System) satellite. 特点 ■Frequency stability of internal reference oscillator is less then 5×10-7 ■Rapid changing output level and the level range is from -80dBm to -140dBm ■Doppler shift function is not built-in ■The output terminal is DC-cut to able to connect to the powered antenna cable. ■All NAVI data preset by GP-IB line and also RS-232C. ■An automatic Z count increment function is equipped so as to synchronize with real time clock. ■ * The application program is attached. 规格 Frequency Characteristics Frequency 1.57542GHz Indication VFD display Accuracy 5×10-7 Output Characteristics Output range -80dBm to -140dBm in 1dB step Indication VFD display Accuracy ±1.0 dB for -80dBm to -140dBm Output impedance 50Ω, VSWR less than 1.2 Spurious output Less then -40dB at second harmonic Setting Can be set with shuttle knob, GP-IB, RS-232C Modulation Modulation method BPSK direct sequence spread spectrum modulation Indication VFD display Modulation code 37 C/A codes Channel SV1 to SV37 Modulation frequency 1.023MHz clock Data modulation C/A code synchronized divider, 50bps BPSK NAVI data 50bps test pattern Setting Can be set with shuttle knob, GP-IB, RS-232C Z count Automatic increment function is equipped so as to synchronize with real time clock. Interface Function Parallel interface GP-IB (Complying with IEEE standard 488-1975) Serial interface RS-232C General Data Operating temperature range 10?C to 40?C Power requirement AC90V to 240V, 50/60Hz Dimensi Approx. 240(W) × 100(H) × 350(D)mm Weight Approx. 3.7kg 销售，租赁，回收二手频谱分析仪，信号源，网络分析仪，示波器，无线电综合测试仪，音频分析仪,噪声系数分析仪，WIFI测试仪，手机综合测试仪，EMI测试仪，天馈线分析仪，功率计，频率计，校准件，函数信号发生器，电源，GPIB卡，万用表，衰减器等测试仪器 The front panel operation can be programmed by GP-IB and RS-232C.