| V1.06 03/17/2009 n 支援FFT快速傅立葉轉換運算功能 n 相關FFT的程式指定尚未新增至程式手冊中，這些指令如下： -------------------------------------------------------------------------------- :MATH:SPECTral:NYQUISTFreq? Description: Returns the Nyquist frequency used for the FFT math waveform. Query-only. -------------------------------------------------------------------------------- :MATH:SPECTral:GATing:INDICators? :MATH:SPECTral:GATing:INDICators Description: Only for those instruments that provide thumbnail waveforms and compute the FFT math waveform based on a portion of the LRL source waveform provide this command. This command enables or disables the display of indicators to indicate the portion of the source waveform record which is used to compute the math FFT waveform. -------------------------------------------------------------------------------- :MATH:SPECTral:GATing:INDICators:STARt? Description: This query-only command returns the starting point in the source waveform record that is used for computing the FFT math waveform. The value returned is the fractional portion of the source record (between 0 and 1). -------------------------------------------------------------------------------- :MATH:SPECTral:GATing:INDICators:END? Description: This query-only command returns the ending point in the source waveform record that is used for computing the FFT math waveform. The value returned is the fractional portion of the source record (between 0 and 1). -------------------------------------------------------------------------------- 功能修正 n 修正四通道示波器儲存螢幕影像檔至USB拇指碟時的問題 V1.03 11/07/2008 修正當觸發延遲超過500 us時波形顯示的問題。 V 1.02 10/15/2008 產品發表時之初版韌體 | 
