1、 civee hu 26.sep.2005示波器Using the Menu ButtonsUsing the Menu Buttons1. MEASURE-完成波形的自動測量2. CURSOR-激活或者關(guān)閉光標(biāo)3. SAVE/RECALL-把波形存盤4. DISPLAY-設(shè)置波形的顯示方式5. QUICKMENU-選擇波形參考方式6. UTILITY-設(shè)置系統(tǒng)功能（語言設(shè)定）Using the Menu ButtonsUsing the Menu Buttons7. Vertical MENU：調(diào)整波形的測量范圍，位置和偏移量 8. Trigger MENU：調(diào)整觸發(fā)功能9. Acquire

2、 MENU：設(shè)置捕獲模式、水平分辨率和延時Identifying Items in the DisplayIdentifying Items in the DisplayShow the Zero level水平中心位置水平偏移量縱坐標(biāo)測量比例橫坐標(biāo)測量比例Application ExamplesApplication Examplesl Taking simple measurementsl Analyzing signal detaill Triggering for digital signall Capturing a single-shot signalMeasure signals

3、 frequency and peak-to-peakUsing AutosetTo quickly display a signal, do these steps:1. Connect the channel 1 probe to the signal.2. Push the AUTOSET button. The oscilloscope sets vertical, horizontal, and trigger controlsautomatically. You can manually adjust any of these controls if youneed to opti

4、mize the display of the waveform.Taking simple measurementsTaking simple measurementsl1.按下按下“測量測量”鍵，進(jìn)入測量菜鍵，進(jìn)入測量菜單單l2. 選擇選擇Ch1通道通道l3.選擇選擇“快照快照”可以得到波形參可以得到波形參數(shù)數(shù)l4. 通過選擇通過選擇“周期周期”、“頻率頻率”、“延遲延遲”，可以讀出想要的測量，可以讀出想要的測量值值l5.按下按下 MENU，關(guān)閉測量菜單，關(guān)閉測量菜單.Selecting Automatic MeasurementsTaking simple measurementsCus

5、tomizing Your Measurements In this example you want to verify that the incoming signal to apiece of digital equipment meets its specifications. Specifically, thetransition time from a low logic level (0.8 V) to a high logic level(2.0 V) must be 10 ns or less.1.按下按下“測量測量”鍵，進(jìn)入測量菜單鍵，進(jìn)入測量菜單2.按下按下“選擇測量選擇

6、測量ch1”3.選擇選擇“上升時間上升時間”4.選擇選擇“參考電平參考電平”5.在高參考電平和低參考電平欄中設(shè)定測量參考電壓值在高參考電平和低參考電平欄中設(shè)定測量參考電壓值Taking simple measurementsMeasuring Specific EventsIf you want to see the pulses in the incoming digital signal, but the pulse widths vary so it is hard to establish a stable trigger. To look at a snapshot of the d

7、igital signaldo this step:1. 按下按下“單一序列單一序列”，捕獲單一信號，捕獲單一信號.2.選擇選擇CH1下的下的“測量測量”3.選擇選擇“正正/負(fù)占空比負(fù)占空比”“”“正正/負(fù)脈沖寬度負(fù)脈沖寬度”Analyzing Signal Detail You have a noisy signal displayed on the oscilloscope and youneed to know more about it. You suspect that the signal containsmuch more detail than you can now see

8、in the display.To better analyze the noise, do these steps:1.按下按下“測量測量”鍵，進(jìn)入測量菜單鍵，進(jìn)入測量菜單2. 選擇選擇“峰值測定峰值測定” 、“正正/負(fù)向超調(diào)負(fù)向超調(diào)”3. 調(diào)節(jié)調(diào)節(jié)“波形強(qiáng)度波形強(qiáng)度”可以更容易看到噪聲可以更容易看到噪聲.Looking at a Noisy SignalAnalyzing Signal DetailTaking Cursor Measurements You can use the cursors to take quick measurements on awaveform.To mea

9、sure the ring frequency at the rising edge of thesignal, do these steps:1.按下按下“光標(biāo)光標(biāo)”按鍵按鍵2.選擇選擇“光標(biāo)功能鍵光標(biāo)功能鍵”3. 選擇選擇“垂直條垂直條”4.選擇選擇“垂直條單元垂直條單元”5.選擇選擇1/seconds (Hz).6.把光標(biāo)移到一個峰值點(diǎn)把光標(biāo)移到一個峰值點(diǎn)7.選擇選擇“select”8.把光標(biāo)移到另一個峰值點(diǎn)把光標(biāo)移到另一個峰值點(diǎn)光標(biāo)會讀出一段波形的頻率光標(biāo)會讀出一段波形的頻率Analyzing Signal DetailYou are analyzing a pulse wavefor

10、m and use the + WidthMeasurement to measure the waveform pulse width. You notice that themeasurement is not stable, which implies that there is jitter in thepulse width.把光標(biāo)移置下降沿的邊緣，選擇把光標(biāo)移置下降沿的邊緣，選擇“將兩個光標(biāo)放在屏幕上將兩個光標(biāo)放在屏幕上”可以讀出時間差值可以讀出時間差值Triggering for digital signal邏輯觸發(fā)： 測試緩慢變化的模擬輸入賀和輸出的同時監(jiān)視對應(yīng)的數(shù)字控制信號。

11、邏輯觸發(fā)包括： 樣本觸發(fā)（模式觸發(fā)） 當(dāng)兩個信號在邏輯上為真或偽時，示波器觸發(fā)。 基本而言，模式觸發(fā)主要是在雙輸入的AND、OR、NAND 或 NOR邏輯門的輸出上觸發(fā)。用戶可將時間限制條件和 信號門限電平指定為觸發(fā)條件的一部分 狀態(tài)觸發(fā) 如果在時鐘信號躍遷為真時某狀態(tài)信號為真或偽，示波器 則觸發(fā)Triggering for digital signal脈沖觸發(fā)： 在mcu的PWM輸出上進(jìn)行時間限定觸發(fā)（脈沖寬度觸發(fā)）有三種方式選擇： 脈沖寬度： “小于”時間限定可用于尋找窄毛刺（毛刺觸發(fā)） “大于”時間限定可用于定位和觸發(fā)長的電壓跌落或鎖存條件 “介于”時間限定用于在串行脈沖列中對某特定脈沖

12、觸發(fā)轉(zhuǎn)換速率：欠幅脈沖：當(dāng)信號脈沖小于指定的門限電平時，欠幅脈沖功能將觸發(fā)示波器。用戶還可指定欠幅脈沖寬度參數(shù)當(dāng)信號的轉(zhuǎn)換速率 (上升或下降時間)小于、大于、等于或不等于某一指定轉(zhuǎn)換速率 時，示波器觸發(fā)。Triggering for digital signalTDS3000在視頻檢測時不僅能夠提供完整的模擬式型號，而且能夠提供高級的數(shù)字測量功能和分析功能。標(biāo)準(zhǔn)的視頻觸發(fā)功能可使用戶很容易在信號的（NTSC/PAL/SECAM)的奇、偶、所有場或所有行上進(jìn)行同步處理。Capturing a single-shot signalThe reliability of a reed relay(簧片繼電器 ) in a piece of equipment has been poorand you need to investigate the problem. You suspect that the relaycontacts arc when the relay opens. The fastest you can open andclose the relay is about once per minute so you need to