臺灣固緯SFG-2004函數信號發生器的性能：直接數字合成技術及FPGA芯片設計頻率范圍:0.1Hz~4MHz頻率分辨率:100mHz頻率準確度及飄移度:+/-20ppm低失真正弦波:-55dBc,0.1Hz~200kHz輸出波形:正弦波、方波、三角波具TTL及CMOSOUT前面板可設定十組儲存及呼叫操作記憶臺灣固緯SFG-2004函數信號發生器的技術參數：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沖98ㄔ,0.1Hz‵100kHz;沖95ㄔ,100kHz‵1MHzSQUAREWAVESymmetry㊣1%ofperiod+4nsto0.1Hz‵100kHz;RiseorFallTime;汨25nsatmaximumoutput.(into50次load)