频谱分析仪HP3585B厂家:美国惠普性能指标pdf频率范围20Hzto40MHz跟踪源(trackinggenerator)低至3Hzresolutionbandwidth测量范围-137dBmto+30dBm可选输入阻抗50Ω,75Ω,1MΩ屏幕光标显示、面板设置显示(CRTreadoutofpanelsettings&markers)数字存储(digitalstorage)输入衰减器自动换档(autoranginginputattenuator)编程和打印接口GPIBwithdirect-plotcapabilityHP3585BSpectrumAnalyzerGPIBSoftware)