台湾固纬SFG-2004函数信号发生器的性能：直接数字合成技术及FPGA芯片设计频率范围:0.1Hz~4MHz频率分辨率:100mHz频率准确度及飘移度:+/-20ppm低失真正弦波:-55dBc,0.1Hz~200kHz输出波形:正弦波、方波、三角波具TTL及CMOSOUT前面板可设定十组储存及呼叫操作记忆台湾固纬SFG-2004函数信号发生器的技术参数：MAINFrequencyRange(ForSine,Square)0.1Hz~4MHzFrequencyRange(ForTriangle)0.1Hz~1MHzFrequencyResolution0.1HzFrequencyStability㊣20ppmFrequencyAccuracy㊣20ppmFrequencyAging㊣5ppm/yearOutputFunctionSine,Square,TriangleAmplitudeRange10Vpp(into50次load)Flatness(Sinewaverelativeto1kHz)ˉ㊣0.3dB,0.1Hz‵1MHz;ˉ㊣0.5dB,1MHz‵4MHz;ˉ㊣2dB,4MHz‵10MHzImpedance50次㊣10ㄔAttenuator-20dB㊣1dB℅2DCOffsetˉ-5V‵ˇ+5V(into50次load)DutyControlRange20%to80%below1MHz(Squarewaveonly)DutyControlResolution1%Display9digitsLEDdisplaySINEWAVEHarmonicsDistortion-55dBc,0.1Hz‵200kHz;-40dBc,0.2MHz‵4MHz;-30dBc,4MHz‵10MHz(SpecificationappliedfromMAX.to1/10level)TRIANGLEWAVELinear冲98ㄔ,0.1Hz‵100kHz;冲95ㄔ,100kHz‵1MHzSQUAREWAVESymmetry㊣1%ofperiod+4nsto0.1Hz‵100kHz;RiseorFallTime;汨25nsatmaximumoutput.(into50次load)