泰克示波器维护保养手册
泰克示波器说明书
break. So what does this mean to modern oscilloscopes?Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication Note 2As designs become faster and more complex, the need for long records, more bandwidth and higher sampling rate, will also increase. Record length is the number of samples an oscilloscope can digitize and store in a single acquisition. The longer the record length, the longer the time window the oscilloscope can capture with high timing resolution (high sample rate). The record length required for a specific application is directly affected by the bandwidth and sample rate. As bandwidth goes up, the sampling rate mustbe approximately five times higher to accurately capturethe signal’s high frequency content. As the sampling rate goes up, a given time window of signal acquisition requires more samples.For example, to capture 2 milliseconds of a 100 MHz signal at 5 GS/s requires a 10 million point record. (Divide2 milliseconds by the 200 picosecond sample interval.) Even at lower frequencies, there are many applications that require long records. Just capturing a single frame of NTSC video (two fields in a 1/30th of a second interval, at 100 MS/s to resolve all the luminance information) requires over3 million points (33 milliseconds divided by 10 nanoseconds). Capturing several seconds of bus traffic on a 1 Mb/sCAN bus to diagnose problems in an electro-mechanical system may require 10 million points for adequate resolution. These and a variety of other applications have driven and continue to drive the need for longer and more detailed data capture windows.Analyzing all that DataThe first digital oscilloscopes had very short record length. As such, it was easy to see everything the oscilloscope captured because it was all on the screen at one time. As oscilloscopes evolved and records got longer, horizontal scrolling was used to see all the data. This was not a big issue as you move from one screen’s worth of information to two, then up to four, eight, twenty, etc. However, as records became longer and longer with each generationof oscilloscope, the time required to look through all the data captured in a single acquisition grew longer and longer.We are now dealing with record lengths in the millions of points that represent thousands of screens worth of signal activity. By way of comparison, imagine trying to find what you’re looking for on the Internet without the assistance of your favorite search engine, web browser, or bookmarks.It would be like searching for a needle in a haystack. Until recently, this is what oscilloscope users faced with their long record length oscilloscopes. Clearly, the old solutions will no longer work.Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication Note3/oscilloscopes Wave Inspector ®Navigation and SearchAvailable on the MSO/DPO4000, DPO3000, andMSO/DPO2000 Series oscilloscopes, Wave Inspector ®controls make working with long records and extracting the answers you need from your waveforms a simple and efficient process.Zoom / PanMost digital oscilloscopes on the market today offer some form of zoom capability. However, the controls associated with the zoom view (zoom factor and position) are oftenburied in menus or multiplexed with other front-panelcontrols. For example, the zoom window’s horizontal position is typically controlled by the horizontal position knob on the front-panel. Once you’ve zoomed in on an event of interest, if you want to move the zoom window to another location in the acquisition it typically means either turning the horizontal position knob countless times to slowly move the window to the new location, or zooming back out, adjusting the window’s location and then zooming back in. Neither approach is efficient or intuitive. It becomes even less efficient when you have to navigate through menus just to access these basic zoom controls.Figure 1.Wave Inspector ®provides dedicated front-panel controls for efficient waveform analysis.Wave Inspector ®ControlsWave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication NoteAs shown in Figure 1A, Wave Inspector provides a dedicatedtwo-tier front-panel Zoom / Pan knob for efficient waveformnavigation. The inner knob controls the zoom factor. Thefarther clockwise you turn it, the farther you zoom in. Turningit counter-clockwise zooms back out and ultimately turnszoom off.The outer ring is a force/rate sensitive pan control. Turningit clockwise pans the zoom window right on the waveform,counterclockwise pans it left. The farther you turn it, thefaster the zoom window moves across the waveform. InFigure 2, we can quickly navigate from one packet to thenext by simply turning the pan control in the desired direction.Even with a 10 million point aquisition, you can rapidly movethe zoom window from one end of the record to the otherin a few seconds, without ever having to change yourzoom factor.In Figure 2 we’re probing an I2C bus. The complete acquisitionis shown in the upper window and the zoomed portionis in the lower, larger window. In this case we’ve zoomedin to view the decoded address and data values for oneparticular packet.Figure 1A.Wave Inspector®provides dedicated front-panel zoomand pan controls.4Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication Note5/oscilloscopes Figure 2.Navigating through a long acquisition of an I 2C bus.Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication NotePlay / PauseMany times when debugging a problem, you don’t know what’s causing the problem so you’re not sure what to look for in the waveform you’ve acquired. However, you know you’ve captured the time window that contained the problem and you now need to look through the data you’ve captured to see if you can find the issue. Again, on most modern oscilloscopes this is done by manually turning the horizontal position knob countless times to inspect the acquired waveforms for any suspicious activity. Wave Inspector®controls help in this area as well. You can simply press the Play button on the front-panel to have your zoom window automatically pan across the waveform. Play speed and direction are adjusted using the intuitive pan control. The farther you turn the pan control the faster the waveform plays by. This allows hands-free playback so you can concentrate on what’s important – the waveform itself. In the I2C example (Figure 2), you could play the waveform while watching the decoded address and data values to monitor activity on the bus. When you spot the event you’re looking for simply press the Play/Pause button again to stop the waveform.6Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication Note7/oscilloscopes MarksWhile looking for the source of the problem, you may find numerous areas of the waveform that either warrant further investigation or are indicative of something happening in the device under test that you want to use as a reference point during the rest of your analysis. For example, assume you need to make timing measurements associated with the latency from when a driver presses the Passenger Window Down switch on the driver’s door panel to when the passenger window actually starts to move. The first event you’ll want to find in the acquisition is when the switch was pressed. The next may be when the CAN module in the driver’s side door issues the command to the CAN module in the passenger door. The last event may be when the motor engaged in the passenger door and the window started to move. Wouldn’t it be nice to mark each of these locations on the waveform so you can quickly jump back and forth between the areas of interest for timing measurements? With the Tektronix Wave Inspector ®Navigation Series you can.In Figure 3, Channel 1 is the output of the switch in the driver’s door, channel 2 is the CAN bus, and Channel 3 is monitoring the motor drive in the passenger door.Wave Inspector®Navigation and Search: Simplifying Waveform Analysis Application NoteWe’ve set the oscilloscope up to trigger on the packet of interest by specifying the appropriate Identifier and Data. Next, we’ve used the front-panel Set / Clear Mark button to mark each of the events of interest on the waveform. These user marks are shown as solid white triangles along the top edge in both the upper and lower windows. The rising edge on channel 1 indicates when the switch was pressed. The trigger event is the CAN module in the driver’s door issuing the command and the window beginning to move is the transition on Channel 3. Using the front-panel Previous and Next buttons we can instantly jump between marks to place cursors for quick and easy latency measurements. In Figure 3, we find that the total time from the press of the switch to window movement is 58.8ms, well within the amount ofacceptable delay.Figure 3.Placing marks on the waveform to assist in latency measurements on a CAN bus.8Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication NoteSearch & MarkIn addition to placing marks on waveforms manually,Wave Inspector ®has the power to search through the entire acquisition and automatically mark every occurrence of a user-specified event. For example, imagine you are capturing laser pulses. The laser fires approximately every 20 µs, with each pulse being only 15 ns wide. You want to look at multiple pulses to characterize their shape and to make precise timing measurements between them, but to navigate from one to the next you need to sift through close to 20 µs of dead time. Then you need to repeat this for every other pulse in the acquisition. Clearly, it would be desirable to be able to move from pulse to pulse instantly without having towaste time “twiddling” a position knob.9/oscilloscopes Figure 3A.Wave Inspector's ®powerful Search capability allows you to find every occurrence of a user-specified event in the acquisition.Previous ButtonNextWave Inspector®Navigation and Search: Simplifying Waveform Analysis Application NoteA very simple search setup that looks for rising edges that cross a threshold of 300mV is illustrated in Figure 4. Marks generated by the search are shown as hollow white triangles along the top edge in both the upper and lower windows. This search resulted in 105 marks being placed throughout the record. Now all you have to do is press the front-panel previous and next buttons to jump from one pulse to the next, no adjustment of zoom scale or positionis required!Figure 4.Wave Inspector®marking every pulse that crosses 300mV in a long acquisition.10Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication NoteWave Inspector’s®Search goes well beyond simple edge searches. Imagine the chip you’re working with has an indeterminate output every so often that’s causing the overall system to crash. You suspect that it’s a metastability issue caused by Setup & Hold violations. In a matterof seconds, you can specify search criteria to have the oscilloscope automatically find every occurrence in the acquisition where setup and hold times you specify were violated. In this case, the part we’re using has published setup and hold times of 12 ns and 6 ns, respectively. To have the oscilloscope automatically find violations of these limits, we simply need to tell it clock is on Channel 1, Data is on Channel 2, set the thresholds, and enter the desired setup and hold times. The oscilloscope then checks the timing relative to every clock edge throughout the entire acquisition and marks the occurrences that violate the specified setup and hold times. In Figure 5, our search resulted in sixviolations. The six events are marked with hollow white11/oscilloscopes Figure 5.Setup & Hold violation search results in six occurrences found.Wave Inspector®Navigation and Search: Simplifying Waveform Analysis Application Notetriangles in the upper window. The lower window is showing a zoomed in view of one of the violations. It’s clear that the narrow negative pulse on the data line is violating the 12 ns setup time.We’ve found the metastability source without having to manually scroll through the waveform and without havingto use cursors to measure anything. You can even perform worst case checks by adjusting the setup and hold times and seeing how many events Wave Inspector®finds. For example, you can set the hold time to zero and then reduce the setup time until only one event is found.1Another powerful search capability provided by Wave Inspector is searching for data in a bus. You can use the front-panel bus buttons to define your signals as an I2C, SPI, CAN, RS-232, or parallel bus. Then the oscilloscope will decode the bus into packets, displaying the informationin a meaningful form. You can trigger on or search for datain the packets. (Requires optional application modules.) 121The MSO4000, MSO2000, and DPO2000 Series oscilloscopes can search for setup & hold violations on every channel in the oscilloscope.Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication NoteWhile this triggering is critical to isolate the time window that contains the problem, it’s highly likely that you’ll need to view bus activity over many packets to understand what’s going on at a system level. The bus search feature enables you to specify packet level criteria and mark every occurrence of it in the record for quick viewing,navigation and analysis. Continuing the earlier CAN example, in Figure 6 we’ve searched for every message in a long acquisition of a CAN bus with the specific Identifier (549) and Data (A1) values we’re interested in.Wave Inspector®found four messages in the acquisition that met the criteria. Again, moving the zoom window from one occurrence to the next is as simple as pressing the previous and next buttons on the front-panel. And because the oscilloscope is decoding the packets for you, you can instantly see all the relevant information without having to manually decode from analog waveforms.In addition to the examples provided above, Wave Inspector®can search for many other types of events. The full list ofsearch capabilities is shown in Table 1.13/oscilloscopes Figure 6.Searching for specific Identifier and Data values in CAN messages.Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication Note14Table 1.Search events.Search Type DescriptionEdge Searches for edges (rising or falling) with a user-specified threshold level.Pulse Width Searches for positive or negative pulse widths that are >, <, =, or ≠ a user-specified pulse width. RuntSearches for positive or negative pulses that cross one amplitude threshold but fail to cross a second threshold before crossing the first again. Search for all runt pulses or only those with duration >, <, =, or ≠ a user-specified time.LogicSearch for a logic pattern (AND, OR, NAND, or NOR) across multiple waveforms with each input set to either High, Low, or Don’t Care. Search for when the event goes true, goes false or stays valid for >, <, =, or ≠ a user-specified time. Additionally, you can define one of the inputs as clock for synchronous (state) searches.Setup & Hold Search for violations of user-specified Setup and Hold times.Rise / Fall Time Search for rising and/or falling edges that are >, <, =, or ≠ a user-specified time.BusI 2C: Search for Start, Repeated Start, Stop, Missing Ack, Address, Data or Address & Data.SPI: Search for SS Active, MOSI, MISO, or MOSI & MISO.CAN: Search for Start of Frame, Type of Frame (Data, Remote, Error, Overload), Identifier (standard or extended), Data, Identifier & Data, End of Frame, or Missing Ack.LIN: Search for Sync, Identifier, Data, Identifier and Data, Wakeup Frame, Sleep Frame or Errors such as Sync, Parity, or Checksum Errors.RS-232/422/485/UART: Search for Tx Start Bit, Rx Start Bit, Tx End of Packet, Rx End of Packet,Tx Data, Rx Data, Tx Parity Error and Rx Parity Error. Parallel: Search for data value.FlexRay (MSO/DPO4000 Series only): Search for Start of Frame, Type of Frame (Normal, Payload, Null,Sync, Startup), Identifier, Cycle Count, Complete Header Field, Data, Identifier and Data, End of Frame or Errors such as Header CRC, Trailer CRC, Null Frame, Sync Frame, or Startup Frame Errors.Multiple SearchesAn obvious question at this point is,“What if I want to perform another search, but don’t want to lose the results (marks) from my first search?”Simply select the Save All Marks menu selection and you’ll see that the hollow white triangle search marks become filled in, appearing the same as marks placed with the front-panel Set Mark button. These marks are now saved on the waveform and a new search can be performed. You can do this as many times as you like, effectively creating unlimited searching ability. Of course, if you would like to start over with a clean slate you can press the Clear All Marks button to remove all marks from the waveform or you can remove any single mark using theSet/Clear Mark front-panel button.Search Interaction with TriggerTwo other powerful and time-saving capabilities are included in the Search menu: the ability to copy trigger settings to search and copy search settings to trigger. Copying the current trigger settings to the search menu is most useful when you want to search through the acquisition to see if there are any other occurrences of the trigger event in the captured data. Alternatively, copying search settings to the trigger menu is most useful when you’ve found an event in your data and you want to reacquire new data using that event as the trigger criteria.ConclusionModern digital oscilloscopes can capture massive amounts of data. Until now, searching through that data has beena time-consuming and frustrating process. With Tektronix Wave Inspector®Navigation and Search, you can extract the answers you need with efficiency and precision and unlikeany other oscilloscope.Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication Note15/oscilloscopes MSO/DPO4000 Series DPO3000 Series MSO/DPO2000 Series Bandwidth 1 GHz, 500 MHz, 350 MHz500 MHz, 300 MHz, 100 MHz200 MHz, 100 MHzChannels (analog) 2 or 4 analog 2 or 4 analog 2 or 4 analogChannels (digital)16 digital (MSO series)–16 digital (MSO series)Record Length10 M 5 M 1 M(All Channels)Sample Rate 5 GS/s*, 2.5 GS/s 2.5 GS/s 1 GS/sDisplay10.4 in. XGA9 in. WVGA7 in. WQVGASerial Bus Triggering I2C, SPI, CAN, LIN, FlexRay, I2C, SPI, CAN, LIN,I2C, SPI, CAN, LIN,and Analysis RS-232/422/485/UART RS-232/422/485/UART RS-232/422/485/UARTWave Inspector®Navigation and Search is available on the following oscilloscopes:Figure 7.Search side menu.*1 GHz bandwidth models.For Further InformationTektronix maintains a comprehensive, constantly expandingcollection of application notes, technical briefs and otherresources to help engineers working on the cutting edge oftechnology. Please visit Copyright © 2008, Tektronix. All rights reserved. Tektronix products are coveredby U.S. and foreign patents, issued and pending. Information in this publicationsupersedes that in all previously published material. Specification and pricechange privileges reserved. TEKTRONIX and TEK are registered trademarksof Tektronix, Inc. All other trade names referenced are the service marks,trademarks or registered trademarks of their respective companies.09/08 EA/WOW 48W-19039-3Contact Tektronix:ASEAN / Australasia (65) 6356 3900Austria +41 52 675 3777 Balkans, Israel, South Africa and other ISE Countries +41 52 675 3777Belgium 07 81 60166Brazil & South America (11) 40669400Canada 1 (800) 661-5625 Central East Europe, Ukraine and the Baltics +41 52 675 3777Central Europe & Greece +41 52 675 3777Denmark +45 80 88 1401Finland +41 52 675 3777France+33 (0) 1 69 86 81 81Germany +49 (221) 94 77 400Hong Kong (852) 2585-6688India (91) 80-22275577Italy +39 (02) 25086 1Japan 81 (3) 6714-3010Luxembourg +44 (0) 1344 392400 Mexico, Central America & Caribbean 52 (55) 5424700Middle East, Asia and North Africa +41 52 675 3777The Netherlands 090 02 021797Norway 800 16098People’s Republic of China 86 (10) 6235 1230Poland +41 52 675 3777Portugal 80 08 12370Republic of Korea 82 (2) 6917-5000Russia & CIS +7 (495) 7484900South Africa +27 11 206 8360Spain (+34) 901 988 054Sweden 020 08 80371Switzerland +41 52 675 3777Taiwan 886 (2) 2722-9622United Kingdom & Eire +44 (0) 1344 392400USA 1 (800) 426-2200 For other areas contact Tektronix, Inc. at: 1 (503) 627-7111Updated 12 November 2007。
泰克示波器操作注意事项及日常保养小贴士,入门工程师须知
泰克示波器操作注意事项及日常保养小贴士，入门工程师须知安泰测试的工程师在协助客户选时，发觉80%的用户都倾向于，提供高精度和高敏捷度的示波器，提高工作效率，简化工作。
今日安泰测试就给大家共享一下操作注重事项及保养小贴士，这些保养贴士也同样适用于其他品牌的示波器，希翼对大家维护保养示波器有所协助：一、注重事项：1、用法合适的电源线：用法专用电源线并经所在国家/地区认证的电源线；2、正确衔接并正确断开衔接：在探头衔接到被测之前，请先将探头输出端衔接到测量仪器。
在衔接探头输入端之前，请先将探头基准导线与被测电路衔接。
将探头与测量仪器断开之前，请先将探头输入端及探头基准导线与被测电路断开。
3、将产品接地：本产品通过电源线的接地导线接地。
为避开电击，必需将接地导线与大地相连。
在对本产品的输入端或输出端举行衔接之前，请务必将本产品正确接地。
4、遵守全部终端额定值：为避开火灾或电击，请遵守产品上的全部额定值和标志。
在对产品举行衔接之前，请首先查阅产品手册，了解相关额定值的具体信息。
只能将探头基准导线衔接到大地。
对任何终端（包括公共终端）施加的不要超过该终端的最大额定值。
5、断开电源：电源开关可以使产品断开电源。
请参阅相关位置的解释。
不要拦住电源开关；此电源开关必需能够随时供用户用法。
6、切勿开盖操作：请勿在外盖或面板打开时运行，假如疑惑损坏，请找合格的修理人员举行检查。
7、远离外漏电路：电源接通后，请勿接触外漏的线路和元件。
8、请勿在湿润环境、易燃易爆的环境中用法并保持表面清洁和干燥，注重适当通风。
二、日常保养1、存放或放置示波器时，请勿使液晶长时光受阳光直射。
2、请勿将示波器或探头置于雾气、液体或溶剂中。
3、用法/操作示波器及探头之前请读熟示波器的用法解释书；4、用法示波器中途间隔半小时以上时应当准时关闭示波器的电源；5、开启示波器电源之前应将示波器放到稳固的操作台上，避开示波器摔下来；6、用法示波器探头时应将导线收拾好，避开被绊到或重第1页共2页。
泰克 mSO24、MSO22 2 系列混合信号示波器快速入门指南说明书
MSO24、MSO222 系列混合信号示波器快速入门手册警告：保养说明仅供合格人员使用。
为避免人身伤害，除非您有资格执行保养，否则请勿执行保养。
在执行保养工作之前，请参阅所有安全摘要。
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Table of ContentsTable of Contents重要安全信息 (5)常规安全概要 (5)避免火灾或人身伤害 (5)探头和测试导线 (7)维修安全概要 (7)本手册中的术语 (8)产品上的术语 (8)产品上的符号 (9)使用电池电源时的安全操作事项 (10)合规性信息 (11)安全合规性 (11)环境合规性 (12)安全免责声明 (13)前言 (14)文档 (14)安装选件升级许可证 (15)检查附带的附件 (15)操作要求 (16)输入信号要求 (16)确认仪器通过开机自检 (16)将探头连接仪器 (17)机架安装选件信息 (17)熟悉仪器 (18)前面板控件和连接器 (18)按钮和旋钮功能 (19)后面板和侧面板连接 (21)仪器支架安装 (22)用户界面 (23)用户界面元素 (25)标记 (26)配置菜单 (32)缩放用户界面 (33)使用触摸屏界面处理常规任务 (34)配置仪器 (36)下载并安装最新的仪器固件 (36)设置时区和时钟读数格式 (36)运行信号路径补偿 (SPC) (37)补偿探头 (37)连接到网络 (LAN) (38)使用 USB 电缆将示波器连接至 PC (39)连接键盘或鼠标 (39)基本操作流程 (40)添加要显示的通道波形 (40)配置通道或波形设置 (41)MSO24、MSO22 2 系列混合信号示波器快速入门手册3Table of Contents自动设置以快速显示波形 (41)如何在出现信号时触发 (42)设置采集模式 (43)设置 Horizontal（水平）参数 (43)添加数学、参考或总线波形 (44)添加测量 (45)配置测量 (47)添加搜索 (49)删除 Measurement（测量）或Search（搜索）标记 (50)更改波形视图设置 (50)显示和配置光标 (51)从 Web 浏览器远程访问 (53)使用 USB 电缆将示波器连接至 PC (54)ESD 防范指导 (54)维护 (55)检查和清洁 (55)外部清洁（显示器除外） (55)平板显示器清洁 (55)检查常见问题 (56)维修仪器 (56)返回仪器进行维修 (56)索引 (57)4重要安全信息重要安全信息本手册包含用户必须遵守的信息和警告，以确保安全操作并保证产品安全。
泰克示波器安全使用指南
泰克示波器安全使用指南向来备受广阔工程师的青睐，能够协助他们更快诊断和测试明天的设计。
泰克拥有全面的数字示波器系列、基础示波器、混合域示波器和高性能示波器，协助客户完成不同的测试项目，今日安泰测试给大家共享一则泰克示波器平安用法指南，协助大家正确规范的操作仪器，削减不须要的损坏。
一、常规平安概要：请务必根据规定用法产品。
具体阅读下列平安性预防措施，以避开人身损害，并防止损坏本产品或与本产品衔接的任何产品。
仔细阅读全部解释。
保留这些解释以备未来参考。
为了保证正确平安地操作产品，除本手册规定的平安性预防措施外，您还必需遵守普遍公认的平安规程。
产品仅限经过培训的人员用法。
惟独了解相关危急的合格人员才干举行开盖修理、保养或调节。
用法前，请务必检查产品是否来自已知来源，以确保正确操作。
本产品不适用于检测危急。
假如有危急的带电导体裸露，请用法个人庇护装备以防电击和强电弧损害。
用法本产品时，您可能需要用法一套大型系统的其他部件。
有关操作这类系统的警告和注重事项，请阅读其他组件手册的平安性部分。
将本设备集成到某系统时，该系统的平安性由系统的组装者负责。
用法合适的电源线:用法本产品专用并经所在国家/地区认证的电源线，不要用法为其他产品提供的电源线。
将产品接地:本产品通过电源线的接地导线接地。
为避开电击，必需将接地导线与大地相连。
在对本产品的输入端或输出端举行衔接之前，请务必将本产品正确接地。
不要切断电源线的接地衔接。
断开电源:电源线可以使产品断开电源。
请参阅有关位置的解释。
请勿将设备放在难以临近电源线的位置；必需保证用户可以随时操作电源线，以在需要时迅速断开衔接。
正确衔接并正确断开衔接:探头或测试导线衔接到电压源时请勿插拔。
仅用法产品附带的或 Tektronix 指明适合产品用法的绝缘电压探头、测试导线和适配器。
遵守全部终端额定值:为避开火灾或电击危急，请遵守产品上全部的额定值和标志解释。
在衔接产品之前，请先查看产品手册，了解额定值的具体信息。
泰克示波器安全操作及保养规程
泰克示波器安全操作及保养规程为了保障泰克示波器的正常使用和使用人员的人身安全，本文介绍泰克示波器的安全操作及保养规程。
1. 泰克示波器的操作安全规程1.1 电源相关1.插头应该牢固，不应该出现接触不良的情况。
2.正确使用电源线，不得使用已经磨损或被损坏的电源线。
3.在有危险环境下不能操作泰克示波器。
1.2 元器件安全相关1.对于使用时出现的异常，如：燃烧、发热等，应及时发现并断掉电源，停止使用。
2.对于泰克示波器的关键零部件，应更好地保存、更新或更换。
1.3 使用规程1.应当先打开电源，然后再开高压、高温启动过程。
2.正确阅读泰克示波器的使用说明书，根据说明书对泰克示波器的操作和使用进行操作。
3.不要使用过于粗鲁的方式来对泰克示波器进行操作，以免对设备造成损伤。
4.避免使用过长期、过大压力的操作，对于传感器的操作具有门槛。
1.4 环境安全1.在泰克示波器使用出现异常，如水、毫秒时间刻度等问题，应及时关机才能和更换零部件。
2.建议将泰克示波器放置在乾燥、通风的环境中进行操作，避免操作温度过低或温度过高。
2. 泰克示波器的保养规程泰克示波器即使不是经常性的使用，但是对设备保养的好处是不言而喻的。
2.1 泰克示波器的清洁1.在使用结束后，应将周边清洁得干净，避免设备因为周边的影响出现一些异样问题。
2.用软布或坚硬的纸巾擦拭泰克示波器、传感器等零部件时，擦拭前必须拔掉插头和电源线，注意安全。
2.2 泰克示波器的维修1.对于泰克示波器维修，应当联系泰克示波器的售后服务中心或技术服务部门；2.3 保持设备的干燥性1.应特别注意将泰克示波器存放在乾燥、开启通风良好的位置中；2.因为环境潮湿可能导致设备的电路板腐蚀等现象，对设备的损害会非常严重。
2.4 散热处理1.在设备运行过程中，容易产生起火、发热现象；2.如果设备操作时间过长、操作次数过多时，可能出现设备短时间内变得温度急涨的状况；3.对于设备的散热，应有相应的解决方式：在设备的散热后，将设备放在空旷的地方降温，或者在设备使用过程中将设备加工降温等操作。
泰克示波器使用手册
泰克示波器使用手册
【最新版】
目录
1.泰克示波器简介
2.泰克示波器的主要功能
3.泰克示波器的使用方法
4.泰克示波器的维护与保养
5.泰克示波器的常见问题与解决方法
正文
【泰克示波器简介】
泰克示波器是一种用于测量电信号的电子仪器，它可以将电信号转换成可视化的波形，方便工程师对其进行分析。
泰克示波器广泛应用于电子设计、生产和维修等领域，是电子工程师必备的工具之一。
【泰克示波器的主要功能】
泰克示波器的主要功能包括：
1.显示电信号的波形
2.测量电信号的幅度、频率、相位等参数
3.分析电信号的周期性、稳定性等特性
4.检测电信号的异常信号和故障
【泰克示波器的使用方法】
泰克示波器的使用方法如下：
1.连接泰克示波器和被测电路
2.设置泰克示波器的测量范围和参数
3.启动泰克示波器并观察波形
4.分析波形并记录数据
【泰克示波器的维护与保养】
为了保证泰克示波器的正常工作和延长使用寿命，需要进行以下维护与保养：
1.定期清洁泰克示波器外壳和屏幕
2.定期检查泰克示波器的连接线和探头
3.避免在高温、潮湿或尘土环境中使用泰克示波器
4.定期进行泰克示波器的校准和标定
【泰克示波器的常见问题与解决方法】
在使用泰克示波器过程中可能会遇到以下常见问题：
1.波形显示不清晰：可能是由于探头接触不良或测量范围设置不当，需要检查探头连接和重新设置测量范围。
2.泰克示波器无法启动：可能是电源故障或内部元件损坏，需要检查电源线路或联系售后服务。
3.测量数据不准确：可能是由于泰克示波器未进行校准或探头损坏，需要进行校准或更换探头。
tektronix TBS2000B系列示波器 用户手册
前言
主要特点 ........................................................................................................................................ 9 TBS2000B 的带宽选件 ............................................................................................................... 10 本手册中使用的约定 .................................................................................................................. 10
操作要求
Environment requirements ........................................................................................................... 11 Power requirements ...................................................................................................................... 11
轻松了解示波器的技术原理及维护和修理保养
轻松了解示波器的技术原理及维护和修理保养轻松了解示波器的技术原理依据示波器波形显示进行串行总线手动解码既耗时又简单出错。
在这一相对简单的I2C信号中，可能有问题存在。
您能轻松找到这个问题吗？甚至还能说出该信号代表什么吗？要对该数据包进行手动解码，需找寻到包头、数据位及包尾。
利用时钟状态（黄色）对全部数据信号状态（蓝色）进行对比确认，然后将其转换为十六进制数值。
在此将手动解码与自动解码示例进行比较。
只需定义时钟和数据处于哪些通道上以及定义用于确定逻辑值（“1”和“0”）的阈值，就可以让示波器获悉正通过总线传输的协议。
在一瞬间，就可对串行数据进行解码并将其显示出来，说明总线波形显示中的起始位、地址位、数据位和结束位。
对I2C总线而言，地址值和数据值能够以十六进制方式显示，或以二进制方式显示。
需测量回波损耗（Sdd11）或插入损耗（Sdd21），但却没有TDR或VNA，怎么办？您可用高带宽示波器进行一些貌似于网络分析的测量，尽管这样做相像有些超出其使用范围，而且确定有某些局限。
传统的频率响应时间测试涉及对快脉冲的测量以及对响应FFT 的查看。
除这种测量外，您还可以通过一些相当基础的设置来测量回波损耗和插入损耗。
大型LCD屏幕还可用作什么呢？可以确定的是，您可以在示波器上观看信号完整性分析指南，但更令人欢乐的是，您还可以观看近来的电影（但是还不能观看3D视频）。
您是否需要用高带宽示波器测量低频信号但又不想有高频噪音？很多示波器都具有数字信号处理功能，可进行滤波，包括低通滤波。
下一次，您想在您12GHz示波器上测量100MHz时钟时，可使用带宽限制功能，以得到更佳的信噪比和更精准明确的测量值。
数字示波器早已具备FFT功能。
随着雷达和其他宽带RF系统进入数字领域，现在示波器已具备瞬态或宽频带宽RF信号分析功能。
您可以对无外部降频转频器的宽带雷达、高数据速率卫星链路或跳频通信系统执行脉冲分析、数字解调和EVM测量。
泰克数字示波器（60MHzw使用说明书+功放连接.doc
数字示波器一，功能检查1.接通仪器电源.仪器执行所有自检项目,并确认通过自检,按SA VE/RECALL按钮,从顶部菜单框,默认的探头菜单衰减系数设值定为10X.2.将p2100探头上的开关设定为10x,并将示波器探头与通道1连接.将探头连接器上的插对准ch1同轴电缆插接件上的插头并插入,然后向右旋转以拧紧探头.把探头端部和接地夹接到探头补偿器的连接器上.3.按自动设置钮.几秒钟内,可见到方波显示按ch1 菜单按钮两次以关闭通道1 ,按ch2 菜单按钮以打开通道2..二,探头补偿在首次将探头与任一输入通道连接时,进行此调节,使探头与输入通道相匹配.1 . 将探头菜单衰减系数设定为10x,将探头上的开关设定为10x并将示波器探头与通道1连接.将探头端部与探头补偿器的5伏连接器相连,基准导线与探头补偿器的地线连接器相连,打开通道,然后按自动门置.2 检查所显示波形的形状.3 如必要,调节探头.自校准：应将所有探头或导线与输入连接器断开，然后，按UTILITY 辅助功能钮，选择DO SELF CAL执行自校准，以确认准备就绪。
数字示波器三.探头衰减系数设定:探头有多种衰减系数,它们会影响示波器垂直标尺度数.如改变(检查)探头衰减系数设定值,按所使用通道的---垂直功能菜单钮, 然后按---探头钮旁的选择钮,直至显示正确的设定值.该设定在再次改变前一直有效.注意:出厂时预定值为10x.确认在探头上衰减开关的设定与示波器上探头探头菜单的选项相同.探头开关的设定值为1 和10.注意:衰减开关,设定在1 时探头将示波器的带宽限制在7兆,欲全带宽时,必将开关设定为10-.四，基本概念（一），触发:触发决定了示波器何时开始采集数据和显示波形,一旦触发被正确设定.它可以把不稳定的显示或黑屏转换成有意义的波形.示波器在开始采集数据时,先收集足够的数据用来在触发点的左方画出波形,示波器在等待触发条件发生的同时连续地采集数据.当检测到触发后,示波器连续地采集足够的数据以在触发点的右方画出波形.1．信源:触发可从多种信源得到:输入通道,市电,外部触发.1）输入通道:最常用, 可任选. 被选中作为触发信源的通道,无论其输入是否被显示.都能正常工作.2）市电:用来显示信号与动力电,如照明设备和动力提供设备,之间的频率关系.示波器将产触发,无需人工输入触发信号.3）外部触发: 用于在两个通道上采集数据的同时在第三个通道上输入触发.2．触发类型:1）边沿触发:可利用模拟和数字测试电路进行边沿触发,当触发输入沿给方向通过某一给定电平时,边沿触发发生.2）视频触发: 标准视频信号可用来进行场行触发.3．触发方式:1）自动触发:使得示波器即使在没有检测到触发条件的情况下也能取到波形,当示波器在一定等待时间”该时间由时基设置决定”器将进行强制触发.当强制进行无效触发时,示波器不能使波形同步,则显示有波形将卷在一起,当有效触发发生时,显示器上的波形是稳定的.可用自动方式来监测幅值电平等可能导致波形显示发生卷滚的因素.2）正常触发: 示波器在正常触发方式下只有当其被触发时才能获取到波形,无触发时,示波器将显示原有波形而获取不到新波形.3）单次触发:在单次触发方式下,用户每按下一次”运行”按钮,示波器将检测到一次触发获取一个波形.示波器采集到的数据依赖于获取方式.4．释抑:释抑时间—每次采集之后的一段时间.为了产生稳定的显示波形的需要.释抑周期可被用来阻止脉冲序中第一个脉冲之外的其它脉冲上的触发.这样,示波器将总是只显示第一个脉冲.为获得释抑控制,按下HORIZONTAL “释抑”,并用释抑旋钮改变释抑周期.5．耦合触发耦合决定信号的何种分量被传送到触发电路,耦合类型包括直流,交流,噪声抑制,高频抑制和低频抑制.1）直流:允许所有的分量通过.2）交流: 阻止直流分量通过.3）噪声抑制:降低触灵敏度并要求较高的信号幅值才能形成稳定触发,从而减少了在噪声上信号错误触发的可能性.4）高频抑制:阻止信号的高频部分通过,只允许低频分量通过.5）低频抑制: 作用效果与高频抑制耦合相反.6．斜率和电平斜率控制钮决定示波器的触发点在信号上升沿或在下降沿,欲获得触发斜率控制,按下”触发菜单”按钮选择”边沿”并用”斜率”按钮选择上升或下降.电平控制钮决定触发点在,边沿上的确切位置,欲获得触发电平控制,按下”HORIZONTAL”菜单按钮,选择“电平”并旋转”电平”旋钮改变数值.数字示波器（二）采集数据采集模拟数据时,本示波器将其转换成数字形式.时基设置将影响采集数据的速度.1，采集数据有三种不同的方式:1）采样: 在该获取方式下,示波器按相等的时间间隔对信号采样以重建波形.这种方式在大多数情况下正确地表示了模拟信号.这种方式不能获取模拟信号在两次采样时间间隔内发生的迅速变化, 从而导至混淆,并有可能丢失信号中的窄脉冲.2）峰值检测: 示波器采集每一采样间隔中输入信号的最大值,并用采样数据显示波形.这样,示波器可以获取和显示在采样方式下可能丢失的窄脉冲,但噪场将比较明显.3）平均值: 示波器获取若干波形,然后取平均,并显示平均后的波形,可用这种方式减少随机噪声.2．时基通过在离散点上对输入信号的采样将波形数字化,时基控制数字化的频率.使用“秒/刻度”旋钮调整时基到某一水平刻度以适合用户需要.（三）．标度和定位波形通过调整波形的刻度和位置可改变其在导电屏幕上的显示.刻度被改变时,显示波形的尺寸将被放大或缩小.位置改变时,波形将上下左右移动.1．垂直刻度和位置通过上下移动波形可以改变显示波形的垂直位置,为对比数据,可将波形上下对齐.改变形的垂直刻度时,显示波形将相对接地电平收缩或扩张.2．水平刻度和位置:触发前后可通过调整”水平位置”控制钮查看波形数据, 改变波形的水平位置实际改变的是触发与显示区中心的时间偏差使用”秒/刻度”旋钮可改变所有波形的水平刻度.如查看波形的一个周期以测量其上升沿的对冲.数字示波器（四）测量：示波器所显示的电压—时间坐标图，可用来测量所显示的波形。
泰克TDS220示波器使用指导书
泰克T D S220示波器使用指导书-B(总8页)--本页仅作为文档封面，使用时请直接删除即可----内页可以根据需求调整合适字体及大小--资料编码产品名称使用对象产品版本编写部门资料版本泰克TDS220示波器使用指导书拟制：日期：审核：日期：审核：日期：批准：日期：华为技术有限公司版权所有侵权必究修订记录目录1现以测漂移产生为例说明示波器使用基本操作规范及步骤：................... 错误!未定义书签。
2抖动产生测试操作步骤：.......................................................................... 错误!未定义书签。
3相位瞬变测试操作步骤：.......................................................................... 错误!未定义书签。
关键词：泰克TDS220示波器摘要：TDS 220，该产品具有100MHz带宽，采样速率为1GS/s，2500点记录长度，为双通道数字实时示波器（超取样率至少为10倍），有光标读数功能、波形持续显示功能，示波器操作温度0℃~50℃，能够满足SYNLOCK对漂移产生、抖动产生、相位瞬变的测试需要。
本文主要介绍了它的使用方法。
缩略语清单：无。
参考资料清单无。
泰克TDS220示波器使用指导书我公司现在提供给新产品工程部工程师使用的示波器为美国Tektronix公司产品TDS 220，该产品具有100MHz带宽，采样速率为1GS/s，2500点记录长度，为双通道数字实时示波器（超取样率至少为10倍），有光标读数功能、波形持续显示功能，示波器操作温度0℃~50℃，能够满足SYNLOCK对漂移产生、抖动产生、相位瞬变的测试需要。
示波器控制面板上有如下功能区：右上角3个键：分别执行AUTOSET、HARDCOPY、RUN/STOP功能；MENUS区：该区6个键负责示波器主功能菜单选择；菜单子项选择区：该区5个键负责显示屏上某一主菜单各功能子项选择；由控制面板最左面一排按键控制；通道垂直位置及分辨率调节区：通道1、通道2垂直位置与分辨率由VERTICAL 区各键及旋钮选择调节；通道水平位置及分辨率调节区：HORIZONAL区负责调整水平位置及水平分辨率；TRIGGER区：一个旋钮及4个按键负责对触发作调整。
泰克 TDS2000C 系列数字存储示波器 产品手册说明书
主要特点和优点200 MHz、100 MHz、70 MHz 和50 MHz 带宽 2通道型号和4通道型号 所有通道上高达2GS/s 的采样率 所有通道上2.5k 点记录长度高级触发，包括脉宽触发和选行视频触发数字存储示波器TDS2000C 系列简便易用性特点16种自动测量及FFT 分析，简化波形分析 内置波形极限测试 自动化扩展数据记录功能 自动设置和信号自动量程 内置上下文相关帮助 探头检查向导 多语言用户界面5.7英寸(144毫米)有源TFT 彩色显示器体积小，重量轻：深仅4.9英寸(124毫米)，重仅4.4磅(2公斤)连接前面板上的USB 2.0主机端口，迅速简便地存储数据、打印及连接USB 键盘后面板上的USB 2.0设备端口，简便地连接PC 或直接打印到兼容PictBridge ®的打印机标配National Instrument公司LabVIEW SignalExpress TM TE 限定版和泰克OpenChoice ®软件，连通工作台终身保修*1*1需要适用一定的条件，详情请访问/lifetimewarranty。
2 产品技术资料您需要的性能，您可以承受的价格TDS2000C系列数字存储示波器在紧凑的设计中提供了经济的性能。
TDS2000C 标配USB 连接、16种自动测量、极限测试、数据记录和上下文相关帮助，帮助您在更少的时间内完成更多工作。
杰出的数字精度，实现精确测量高达100 MHz 的带宽和2 GS/s 的最大采样率，没有任何其它数字存储示波器能够以这种价位提供如此高的带宽和采样率。
泰克专有的采样技术提供了实时采样功能，在任何时间在所有通道上最低支持10倍过采样率，准确地捕获信号。
在使用多条通道时，采样性能不会下降。
为调试设备提供关键工具高级触发如上升沿/下降沿触发、脉宽触发和视频触发帮助您迅速隔离关心的信号。
一旦捕获了信号，高级数学运算功能和自动测量功能可以加快分析速度。
泰克DPO3054数字荧光示波器故障维修
泰克DPO3054数字荧光⽰波器故障维修⽰波器是⼀种⽤途⼗分⼴泛的电⼦测量仪器。
它能把⾁眼看不见的电信号变换成看得见的图像，便于⼈们研究各种电现象的变化过程。
主要⽤途是⽤来测量交流电或脉冲电流波的形状的仪器，由电⼦管放⼤器、扫描振荡器、阴极射线管等组成。
除观测电流的波形外，还可以测定频率、电压强度等。
凡可以变为电效应的周期性物理过程都可以⽤⽰波器进⾏观测；⼀、按照信号的不同分类1、模拟⽰波器采⽤的是模拟电路（⽰波管，其基础是电⼦枪）电⼦枪向屏幕发射电⼦,发射的电⼦经聚焦形成电⼦束,并打到屏幕上。
屏幕的内表⾯涂有荧光物质,这样电⼦束打中的点就会发出光来。
2、数字⽰波器则是数据采集，A/D转换，软件编程等⼀系列的技术制造出来的⾼性能⽰波器。
数字⽰波器的⼯作⽅式是通过模拟转换器（ADC）把被测电压转换为数字信息。
数字⽰波器捕获的是波形的⼀系列样值，并对样值进⾏存储，存储限度是判断累计的样值是否能描绘出波形为⽌，随后，数字⽰波器重构波形。
数字⽰波器可以分为数字存储⽰波器（DSO），数字荧光⽰波器（DPO）和采样⽰波器。
3、模拟⽰波器要提⾼带宽，需要⽰波管、垂直放⼤和⽔平扫描全⾯推进。
数字⽰波器要改善带宽只需要提⾼前端的A/D转换器的性能，对⽰波管和扫描电路没有特殊要求。
加上数字⽰波管能充分利⽤记忆、存储和处理，以及多种触发和超前触发能⼒。
廿世纪⼋⼗年代数字⽰波器异军突起，成果累累，⼤有全⾯取代模拟⽰波器之势，模拟⽰波器的确从前台退到后台。
⼆、按照结构和性能不同分类①普通⽰波器。
电路结构简单，频带较窄，扫描线性差，仅⽤于观察波形。
②多⽤⽰波器。
频带较宽，扫描线性好，能对直流、低频、⾼频、超⾼频信号和脉冲信号进⾏定量测试。
借助幅度校准器和时间校准器，测量的准确度可达±5%。
③多线⽰波器。
采⽤多束⽰波管，能在荧光屏上同时显⽰两个以上同频信号的波形，没有时差，时序关系准确。
④多踪⽰波器。
具有电⼦开关和门控电路的结构，可在单束⽰波管的荧光屏上同时显⽰两个以上同频信号的波形。
泰克示波器使用手册
泰克示波器使用手册第一部分：泰克示波器的基本概念一、什么是示波器示波器是一种用于观察和分析电信号的仪器。
它可以显示电压随时间变化的波形图，通过波形图的形状和特征，我们可以判断电路中是否存在问题，从而进行故障诊断和分析。
二、示波器的种类目前市面上有许多种类的示波器，包括模拟示波器、数字示波器、便携式示波器等。
每种示波器都有其特点和适用场景，用户可以根据自己的需求进行选择。
三、泰克示波器的特点泰克示波器是一种高性能的数字示波器，具有高精度、高带宽、多通道等特点。
它适用于电子制造、通信、医疗等领域，能够满足不同行业的测试需求。
第二部分：泰克示波器的基本操作一、示波器的外部结构泰克示波器通常由屏幕、控制按钮、通道接口、电源接口等部分组成。
用户可以通过控制按钮来选择功能、调整参数，通过通道接口连接被测电路，从而进行信号的采集和显示。
二、泰克示波器的开机与关机开机：按下电源按钮，等待片刻，屏幕即可显示出波形图。
关机：长按电源按钮，确认关闭示波器。
三、泰克示波器的基本设置1. 时基设置：通过控制按钮选择合适的时间基准，调整波形图的时间轴。
2. 电压设置：选择合适的量程和耦合方式，以适应被测信号的幅值和特点。
3. 触发设置：设置触发源、触发电平、触发沿等参数，以确保波形图的稳定和清晰。
四、泰克示波器的数据分析泰克示波器具有数据记录、存储、分析的功能，用户可以通过控制按钮进行波形的缩放、移动、测量，实现对信号特征的深入分析。
第三部分：泰克示波器的高级功能一、泰克示波器的多通道显示泰克示波器支持多通道同时显示，用户可以通过切换通道、调整波形颜色、叠加显示等功能，实现多个信号的对比和分析。
二、泰克示波器的自动测量泰克示波器具有自动测量功能，能够对波形的周期、频率、峰峰值、均值等参数进行自动测量和显示，简化了用户的操作流程，提高了效率和准确性。
三、泰克示波器的远程控制泰克示波器支持远程控制功能，用户可以通过USB、LAN等接口连接到计算机或其他设备，实现远程控制和数据传输，方便了远程测试和监控。
泰克示波器官方使用教程
示波器通过将被测信号与内部产 生的扫描信号进行比较，从而在 屏幕上显示出被测信号的波形。
示波器分类及特点
01
术，具有 简单、直观的特点，但精 度和稳定性相对较低。
数字示波器
采用数字信号处理技术， 具有高精度、高稳定性、 多功能等特点。
混合信号示波器
同时支持模拟和数字信号 测量，适用于复杂信号分 析。
触发故障
检查触发源设置是否正确，调整触发电平和 触发模式。
显示故障
检查显示屏连接是否松动，调整显示屏亮度 和对比度设置。
通道故障
检查通道连接是否良好，尝试重新插拔通道 模块或更换通道模块。
预防性维护保养计划制定和执行
定期清洁
定期清洁示波器外壳和显示屏，避免 灰尘和污垢堆积。
定期检查
定期检查电源插头、电源线、通道连 接等关键部件，确保设备正常运行。
自定义报告模板设计教程
模板创建
用户可以根据需求创建自定义报告模板。通过示波器的报 告生成功能，用户可以选择不同的布局、字体、颜色等， 以定制个性化的报告外观。
数据填充
在自定义模板中，用户可以设置动态数据填充区域。当导 入波形数据时，这些区域将自动填充相应的测量结果和波 形信息。
模板保存与调用
创建好的自定义模板可以保存到示波器内部或外部存储设 备中。在需要生成报告时，用户可以直接调用这些模板， 提高报告生成的效率。
泰克示波器简介
泰克（Tektronix）是全球知名 的电子测量仪器制造商，其示波 器产品具有高性能、高精度、高
可靠性等特点。
泰克示波器系列丰富，包括模拟 示波器、数字示波器、混合信号 示波器等，满足不同用户的需求
。
泰克示波器在科研、教育、工业 生产等领域得到广泛应用，为电 子工程师和技术人员提供了强大
泰克示波器说明书
break. So what does this mean to modern oscilloscopes?Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication Note 2As designs become faster and more complex, the need for long records, more bandwidth and higher sampling rate, will also increase. Record length is the number of samples an oscilloscope can digitize and store in a single acquisition. The longer the record length, the longer the time window the oscilloscope can capture with high timing resolution (high sample rate). The record length required for a specific application is directly affected by the bandwidth and sample rate. As bandwidth goes up, the sampling rate mustbe approximately five times higher to accurately capturethe signal’s high frequency content. As the sampling rate goes up, a given time window of signal acquisition requires more samples.For example, to capture 2 milliseconds of a 100 MHz signal at 5 GS/s requires a 10 million point record. (Divide2 milliseconds by the 200 picosecond sample interval.) Even at lower frequencies, there are many applications that require long records. Just capturing a single frame of NTSC video (two fields in a 1/30th of a second interval, at 100 MS/s to resolve all the luminance information) requires over3 million points (33 milliseconds divided by 10 nanoseconds). Capturing several seconds of bus traffic on a 1 Mb/sCAN bus to diagnose problems in an electro-mechanical system may require 10 million points for adequate resolution. These and a variety of other applications have driven and continue to drive the need for longer and more detailed data capture windows.Analyzing all that DataThe first digital oscilloscopes had very short record length. As such, it was easy to see everything the oscilloscope captured because it was all on the screen at one time. As oscilloscopes evolved and records got longer, horizontal scrolling was used to see all the data. This was not a big issue as you move from one screen’s worth of information to two, then up to four, eight, twenty, etc. However, as records became longer and longer with each generationof oscilloscope, the time required to look through all the data captured in a single acquisition grew longer and longer.We are now dealing with record lengths in the millions of points that represent thousands of screens worth of signal activity. By way of comparison, imagine trying to find what you’re looking for on the Internet without the assistance of your favorite search engine, web browser, or bookmarks.It would be like searching for a needle in a haystack. Until recently, this is what oscilloscope users faced with their long record length oscilloscopes. Clearly, the old solutions will no longer work.Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication Note3/oscilloscopes Wave Inspector ®Navigation and SearchAvailable on the MSO/DPO4000, DPO3000, andMSO/DPO2000 Series oscilloscopes, Wave Inspector ®controls make working with long records and extracting the answers you need from your waveforms a simple and efficient process.Zoom / PanMost digital oscilloscopes on the market today offer some form of zoom capability. However, the controls associated with the zoom view (zoom factor and position) are oftenburied in menus or multiplexed with other front-panelcontrols. For example, the zoom window’s horizontal position is typically controlled by the horizontal position knob on the front-panel. Once you’ve zoomed in on an event of interest, if you want to move the zoom window to another location in the acquisition it typically means either turning the horizontal position knob countless times to slowly move the window to the new location, or zooming back out, adjusting the window’s location and then zooming back in. Neither approach is efficient or intuitive. It becomes even less efficient when you have to navigate through menus just to access these basic zoom controls.Figure 1.Wave Inspector ®provides dedicated front-panel controls for efficient waveform analysis.Wave Inspector ®ControlsWave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication NoteAs shown in Figure 1A, Wave Inspector provides a dedicatedtwo-tier front-panel Zoom / Pan knob for efficient waveformnavigation. The inner knob controls the zoom factor. Thefarther clockwise you turn it, the farther you zoom in. Turningit counter-clockwise zooms back out and ultimately turnszoom off.The outer ring is a force/rate sensitive pan control. Turningit clockwise pans the zoom window right on the waveform,counterclockwise pans it left. The farther you turn it, thefaster the zoom window moves across the waveform. InFigure 2, we can quickly navigate from one packet to thenext by simply turning the pan control in the desired direction.Even with a 10 million point aquisition, you can rapidly movethe zoom window from one end of the record to the otherin a few seconds, without ever having to change yourzoom factor.In Figure 2 we’re probing an I2C bus. The complete acquisitionis shown in the upper window and the zoomed portionis in the lower, larger window. In this case we’ve zoomedin to view the decoded address and data values for oneparticular packet.Figure 1A.Wave Inspector®provides dedicated front-panel zoomand pan controls.4Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication Note5/oscilloscopes Figure 2.Navigating through a long acquisition of an I 2C bus.Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication NotePlay / PauseMany times when debugging a problem, you don’t know what’s causing the problem so you’re not sure what to look for in the waveform you’ve acquired. However, you know you’ve captured the time window that contained the problem and you now need to look through the data you’ve captured to see if you can find the issue. Again, on most modern oscilloscopes this is done by manually turning the horizontal position knob countless times to inspect the acquired waveforms for any suspicious activity. Wave Inspector®controls help in this area as well. You can simply press the Play button on the front-panel to have your zoom window automatically pan across the waveform. Play speed and direction are adjusted using the intuitive pan control. The farther you turn the pan control the faster the waveform plays by. This allows hands-free playback so you can concentrate on what’s important – the waveform itself. In the I2C example (Figure 2), you could play the waveform while watching the decoded address and data values to monitor activity on the bus. When you spot the event you’re looking for simply press the Play/Pause button again to stop the waveform.6Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication Note7/oscilloscopes MarksWhile looking for the source of the problem, you may find numerous areas of the waveform that either warrant further investigation or are indicative of something happening in the device under test that you want to use as a reference point during the rest of your analysis. For example, assume you need to make timing measurements associated with the latency from when a driver presses the Passenger Window Down switch on the driver’s door panel to when the passenger window actually starts to move. The first event you’ll want to find in the acquisition is when the switch was pressed. The next may be when the CAN module in the driver’s side door issues the command to the CAN module in the passenger door. The last event may be when the motor engaged in the passenger door and the window started to move. Wouldn’t it be nice to mark each of these locations on the waveform so you can quickly jump back and forth between the areas of interest for timing measurements? With the Tektronix Wave Inspector ®Navigation Series you can.In Figure 3, Channel 1 is the output of the switch in the driver’s door, channel 2 is the CAN bus, and Channel 3 is monitoring the motor drive in the passenger door.Wave Inspector®Navigation and Search: Simplifying Waveform Analysis Application NoteWe’ve set the oscilloscope up to trigger on the packet of interest by specifying the appropriate Identifier and Data. Next, we’ve used the front-panel Set / Clear Mark button to mark each of the events of interest on the waveform. These user marks are shown as solid white triangles along the top edge in both the upper and lower windows. The rising edge on channel 1 indicates when the switch was pressed. The trigger event is the CAN module in the driver’s door issuing the command and the window beginning to move is the transition on Channel 3. Using the front-panel Previous and Next buttons we can instantly jump between marks to place cursors for quick and easy latency measurements. In Figure 3, we find that the total time from the press of the switch to window movement is 58.8ms, well within the amount ofacceptable delay.Figure 3.Placing marks on the waveform to assist in latency measurements on a CAN bus.8Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication NoteSearch & MarkIn addition to placing marks on waveforms manually,Wave Inspector ®has the power to search through the entire acquisition and automatically mark every occurrence of a user-specified event. For example, imagine you are capturing laser pulses. The laser fires approximately every 20 µs, with each pulse being only 15 ns wide. You want to look at multiple pulses to characterize their shape and to make precise timing measurements between them, but to navigate from one to the next you need to sift through close to 20 µs of dead time. Then you need to repeat this for every other pulse in the acquisition. Clearly, it would be desirable to be able to move from pulse to pulse instantly without having towaste time “twiddling” a position knob.9/oscilloscopes Figure 3A.Wave Inspector's ®powerful Search capability allows you to find every occurrence of a user-specified event in the acquisition.Previous ButtonNextWave Inspector®Navigation and Search: Simplifying Waveform Analysis Application NoteA very simple search setup that looks for rising edges that cross a threshold of 300mV is illustrated in Figure 4. Marks generated by the search are shown as hollow white triangles along the top edge in both the upper and lower windows. This search resulted in 105 marks being placed throughout the record. Now all you have to do is press the front-panel previous and next buttons to jump from one pulse to the next, no adjustment of zoom scale or positionis required!Figure 4.Wave Inspector®marking every pulse that crosses 300mV in a long acquisition.10Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication NoteWave Inspector’s®Search goes well beyond simple edge searches. Imagine the chip you’re working with has an indeterminate output every so often that’s causing the overall system to crash. You suspect that it’s a metastability issue caused by Setup & Hold violations. In a matterof seconds, you can specify search criteria to have the oscilloscope automatically find every occurrence in the acquisition where setup and hold times you specify were violated. In this case, the part we’re using has published setup and hold times of 12 ns and 6 ns, respectively. To have the oscilloscope automatically find violations of these limits, we simply need to tell it clock is on Channel 1, Data is on Channel 2, set the thresholds, and enter the desired setup and hold times. The oscilloscope then checks the timing relative to every clock edge throughout the entire acquisition and marks the occurrences that violate the specified setup and hold times. In Figure 5, our search resulted in sixviolations. The six events are marked with hollow white11/oscilloscopes Figure 5.Setup & Hold violation search results in six occurrences found.Wave Inspector®Navigation and Search: Simplifying Waveform Analysis Application Notetriangles in the upper window. The lower window is showing a zoomed in view of one of the violations. It’s clear that the narrow negative pulse on the data line is violating the 12 ns setup time.We’ve found the metastability source without having to manually scroll through the waveform and without havingto use cursors to measure anything. You can even perform worst case checks by adjusting the setup and hold times and seeing how many events Wave Inspector®finds. For example, you can set the hold time to zero and then reduce the setup time until only one event is found.1Another powerful search capability provided by Wave Inspector is searching for data in a bus. You can use the front-panel bus buttons to define your signals as an I2C, SPI, CAN, RS-232, or parallel bus. Then the oscilloscope will decode the bus into packets, displaying the informationin a meaningful form. You can trigger on or search for datain the packets. (Requires optional application modules.) 121The MSO4000, MSO2000, and DPO2000 Series oscilloscopes can search for setup & hold violations on every channel in the oscilloscope.Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication NoteWhile this triggering is critical to isolate the time window that contains the problem, it’s highly likely that you’ll need to view bus activity over many packets to understand what’s going on at a system level. The bus search feature enables you to specify packet level criteria and mark every occurrence of it in the record for quick viewing,navigation and analysis. Continuing the earlier CAN example, in Figure 6 we’ve searched for every message in a long acquisition of a CAN bus with the specific Identifier (549) and Data (A1) values we’re interested in.Wave Inspector®found four messages in the acquisition that met the criteria. Again, moving the zoom window from one occurrence to the next is as simple as pressing the previous and next buttons on the front-panel. And because the oscilloscope is decoding the packets for you, you can instantly see all the relevant information without having to manually decode from analog waveforms.In addition to the examples provided above, Wave Inspector®can search for many other types of events. The full list ofsearch capabilities is shown in Table 1.13/oscilloscopes Figure 6.Searching for specific Identifier and Data values in CAN messages.Wave Inspector ®Navigation and Search: Simplifying Waveform AnalysisApplication Note14Table 1.Search events.Search Type DescriptionEdge Searches for edges (rising or falling) with a user-specified threshold level.Pulse Width Searches for positive or negative pulse widths that are >, <, =, or ≠ a user-specified pulse width. RuntSearches for positive or negative pulses that cross one amplitude threshold but fail to cross a second threshold before crossing the first again. Search for all runt pulses or only those with duration >, <, =, or ≠ a user-specified time.LogicSearch for a logic pattern (AND, OR, NAND, or NOR) across multiple waveforms with each input set to either High, Low, or Don’t Care. Search for when the event goes true, goes false or stays valid for >, <, =, or ≠ a user-specified time. Additionally, you can define one of the inputs as clock for synchronous (state) searches.Setup & Hold Search for violations of user-specified Setup and Hold times.Rise / Fall Time Search for rising and/or falling edges that are >, <, =, or ≠ a user-specified time.BusI 2C: Search for Start, Repeated Start, Stop, Missing Ack, Address, Data or Address & Data.SPI: Search for SS Active, MOSI, MISO, or MOSI & MISO.CAN: Search for Start of Frame, Type of Frame (Data, Remote, Error, Overload), Identifier (standard or extended), Data, Identifier & Data, End of Frame, or Missing Ack.LIN: Search for Sync, Identifier, Data, Identifier and Data, Wakeup Frame, Sleep Frame or Errors such as Sync, Parity, or Checksum Errors.RS-232/422/485/UART: Search for Tx Start Bit, Rx Start Bit, Tx End of Packet, Rx End of Packet,Tx Data, Rx Data, Tx Parity Error and Rx Parity Error. Parallel: Search for data value.FlexRay (MSO/DPO4000 Series only): Search for Start of Frame, Type of Frame (Normal, Payload, Null,Sync, Startup), Identifier, Cycle Count, Complete Header Field, Data, Identifier and Data, End of Frame or Errors such as Header CRC, Trailer CRC, Null Frame, Sync Frame, or Startup Frame Errors.Multiple SearchesAn obvious question at this point is,“What if I want to perform another search, but don’t want to lose the results (marks) from my first search?”Simply select the Save All Marks menu selection and you’ll see that the hollow white triangle search marks become filled in, appearing the same as marks placed with the front-panel Set Mark button. These marks are now saved on the waveform and a new search can be performed. You can do this as many times as you like, effectively creating unlimited searching ability. Of course, if you would like to start over with a clean slate you can press the Clear All Marks button to remove all marks from the waveform or you can remove any single mark using theSet/Clear Mark front-panel button.Search Interaction with TriggerTwo other powerful and time-saving capabilities are included in the Search menu: the ability to copy trigger settings to search and copy search settings to trigger. Copying the current trigger settings to the search menu is most useful when you want to search through the acquisition to see if there are any other occurrences of the trigger event in the captured data. Alternatively, copying search settings to the trigger menu is most useful when you’ve found an event in your data and you want to reacquire new data using that event as the trigger criteria.ConclusionModern digital oscilloscopes can capture massive amounts of data. Until now, searching through that data has beena time-consuming and frustrating process. With Tektronix Wave Inspector®Navigation and Search, you can extract the answers you need with efficiency and precision and unlikeany other oscilloscope.Wave Inspector®Navigation and Search: Simplifying Waveform AnalysisApplication Note15/oscilloscopes MSO/DPO4000 Series DPO3000 Series MSO/DPO2000 Series Bandwidth 1 GHz, 500 MHz, 350 MHz500 MHz, 300 MHz, 100 MHz200 MHz, 100 MHzChannels (analog) 2 or 4 analog 2 or 4 analog 2 or 4 analogChannels (digital)16 digital (MSO series)–16 digital (MSO series)Record Length10 M 5 M 1 M(All Channels)Sample Rate 5 GS/s*, 2.5 GS/s 2.5 GS/s 1 GS/sDisplay10.4 in. XGA9 in. WVGA7 in. WQVGASerial Bus Triggering I2C, SPI, CAN, LIN, FlexRay, I2C, SPI, CAN, LIN,I2C, SPI, CAN, LIN,and Analysis RS-232/422/485/UART RS-232/422/485/UART RS-232/422/485/UARTWave Inspector®Navigation and Search is available on the following oscilloscopes:Figure 7.Search side menu.*1 GHz bandwidth models.For Further InformationTektronix maintains a comprehensive, constantly expandingcollection of application notes, technical briefs and otherresources to help engineers working on the cutting edge oftechnology. Please visit Copyright © 2008, Tektronix. All rights reserved. Tektronix products are coveredby U.S. and foreign patents, issued and pending. Information in this publicationsupersedes that in all previously published material. Specification and pricechange privileges reserved. TEKTRONIX and TEK are registered trademarksof Tektronix, Inc. All other trade names referenced are the service marks,trademarks or registered trademarks of their respective companies.09/08 EA/WOW 48W-19039-3Contact Tektronix:ASEAN / Australasia (65) 6356 3900Austria +41 52 675 3777 Balkans, Israel, South Africa and other ISE Countries +41 52 675 3777Belgium 07 81 60166Brazil & South America (11) 40669400Canada 1 (800) 661-5625 Central East Europe, Ukraine and the Baltics +41 52 675 3777Central Europe & Greece +41 52 675 3777Denmark +45 80 88 1401Finland +41 52 675 3777France+33 (0) 1 69 86 81 81Germany +49 (221) 94 77 400Hong Kong (852) 2585-6688India (91) 80-22275577Italy +39 (02) 25086 1Japan 81 (3) 6714-3010Luxembourg +44 (0) 1344 392400 Mexico, Central America & Caribbean 52 (55) 5424700Middle East, Asia and North Africa +41 52 675 3777The Netherlands 090 02 021797Norway 800 16098People’s Republic of China 86 (10) 6235 1230Poland +41 52 675 3777Portugal 80 08 12370Republic of Korea 82 (2) 6917-5000Russia & CIS +7 (495) 7484900South Africa +27 11 206 8360Spain (+34) 901 988 054Sweden 020 08 80371Switzerland +41 52 675 3777Taiwan 886 (2) 2722-9622United Kingdom & Eire +44 (0) 1344 392400USA 1 (800) 426-2200 For other areas contact Tektronix, Inc. at: 1 (503) 627-7111Updated 12 November 2007。
示波器的应用原理如何及维护和修理保养
示波器的应用原理如何及维护和修理保养示波器的应用原理如何？示波器是利用电子示波管的特性，将人眼无法直接观测的交变电信号转换成图像，显示在荧光屏上以便测量的电子测量仪器。
它是察看数字电路试验现象、分析试验中的问题、测量试验结果必不可少的紧要仪器。
示波器由示波管和电源系统、同步系统、X轴偏转系统、Y轴偏转系统、延迟扫描系统、标准信号源构成。
1．1示波管阴极射线管（CRT）简称示波管，是示波器的核心。
它将电信号转换为光信号。
电子枪、偏转系统和荧光屏三部分密封在一个真空玻璃壳内，构成了一个完整的示波管。
1．荧光屏现在的示波管屏面通常是矩形平面，内表面沉积一层磷光材料构成荧光膜。
在荧光膜上常又加添一层蒸发铝膜。
高速电子穿过铝膜，撞击荧光粉而发光形成亮点。
铝膜具有内反射作用，有利于提高亮点的辉度。
铝膜还有散热等其他作用。
当电子停止轰击后，亮点不能立刻消失而要保留一段时间。
亮点辉度下降到原始值的10％所经过的时间叫做“余辉时间”。
余辉时间短于10μs为极短余辉，10μs—1ms为短余辉，1ms—0．1s为中余辉，0．1s—1s为长余辉，大于1s为极长余辉。
一般的示波器配备中余辉示波管，高频示波器选用短余辉，低频示波器选用长余辉。
由于所用磷光材料不同，荧光屏上能发出不同颜色的光。
一般示波器多接受发绿光的示波管，以保护人的眼睛。
2．示波管的电源为使示波管正常工作，对电源供应有确定要求。
规定第二阳极与偏转板之间电位相近，偏转板的平均电位为零或接近为零。
阴极必需工作在负电位上。
栅极G1相对阴极为负电位（—30V～—100V），而且可调，以实现辉度调整。
阳极为正电位（约+100V～+600V），也应可调，用作聚焦调整。
第二阳极与前加速极相连，对阴极为正高压（约+1000V），相对于地电位的可调范围为±50V。
由于示波管各电极电流很小，可以用公共高压经电阻分压器供电。
3．偏转系统偏转系统掌控电子射线方向，使荧光屏上的光点随外加信号的变化描绘出被测信号的波形。
数字示波器维护保养内容
数字示波器维护保养内容
数字示波器是一种高精度、高灵敏度的电子测量工具，需要进行维护保养以确保其正常运行和准确性。
1. 清洁：定期清洁数字示波器的外部表面、控制面板和插头，避免灰尘和污垢堆积。
同时，也需注意不要用潮湿的布擦拭。
2. 检查储存器：定期检查存储器的电池电量和运行状态，如发现电量不足或故障需要及时更换或修理。
3. 校准测量值：定期进行数字示波器的校准，以保证准确性。
可以使用标准信号源来校准示波器的幅值、频率和时间参数等的精确度。
4. 维护插头：插头应经常清理和检查，如发现插头损坏或变形，需要及时更换。
5. 线路检查：定期检查数字示波器的内部线路，确保各个连接处紧固可靠，无松动、短路和断路现象。
6. 保持干燥：数字示波器应放在干燥的地方，如长时间不使用，应将其存放于防潮箱内。
7. 避免震动：数字示波器是高精度测量仪器，应避免受到震动和冲击，以免影响其测量精度和寿命。
综上所述，数字示波器的维护保养应从不同的方面进行，以确保其长期稳定运行和精确度。
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泰克示波器维护保养手册相信对于电源工程师，示波器的功劳是不可替代的，一旦产品有问题就需要抓波形，抓时序，测试准确数值，以帮助工程师分析，处理，一切看波形说话。
对于电子工程师来说，维护保养您的示波器，使其拥有更长的寿命，长久保持良好的性能状态也是非常重要的。
今天安泰测试送一大家一份泰克示波器维护保养手册，同样也也适用于其他品牌的示波器。
一、检查和清洁：预防性维修包括目视检查和清洁示波器及使用时一般注意事项。
定期预防维护，可防止示波器故障，确保其可靠性。
在示波器发生维修或者调整之前，需要定期进行示波器的预防性维护。
关于周期的问题，多久做一次维护取决于示波器使用环境的严重程度，例如在标准的实验室中一般需要3 个月进行一次检查和清洁，如果在比较恶劣环境并有较多灰尘的现场使用，则需要每个月甚至每两周进行一次，具体根据情况而定。
注：每次检查及清洁必须在机器关掉并且物理上电源线完全断开电压的前提下进行！1. 显示面板清理面板为软塑料屏幕，清洁时务必小心。
注意：（1）不恰当的清洗剂或方法会损坏平板显示。
（2）避免使用研磨清洁剂或商用玻璃清洁剂清洁显示器表面。
（3）避免将液体直接喷在显示器表面。
（4）避免过度用力擦洗显示器。
清洁显示器表面可以用专用的洁净室擦拭巾(如Wypall 中效湿巾，#05701)。
如果显示器很脏，用蒸馏水或浓度为75%异丙醇溶液，轻轻擦拭显示器表面。
用力过度可能损坏显示屏表面。
2. 外部清洁注意：为防止示波器受潮，只能使用湿润的擦拭布（避免有液体滴落）。
用干的无绒布或软毛刷来清洁底盘及仪器的外表面。
如果有任何污垢残留，用抹布蘸75%异丙醇溶剂来擦拭。
使用棉签清洁控件和连接器周围的狭窄空间。
不要使用可能损坏底盘的研磨剂。
当清理电源开关时请使用潮湿的清洁巾，避免直接喷水或者弄湿开关。
3. 外观检查检查示波器外部有无损坏、磨损和缺件，使用下表作为指南。
立即修复可能引起人身伤害或导致示波器进一步损坏的问题。
4. 内部检查因要求较专业且步骤复杂涉及到拆机，建议经由厂家专业的工程师进行检查和维护。
二、示波器校准很多工程师在繁忙的测试工作中会忽略掉仪器的校准，对于测试仪器校准周期的要求并不是很清楚。
有些工程师只是在有大的项目启动时才会想起测试仪器需要进行校准。
大家忽略掉的校准工作，对于示波器的使用寿命有着关键性的作用。
什么是校准？由有专业资质的计量实验机构，提供远高于待校准设备的真正可溯源的外部标准源对待校准仪器关键的性能指标按照该类仪器校准条件进行一项一项的验证，最终能全部通过其规格书指标误差范围的工作过程。
校准过程需要注意的关键点：校准认证资质。
在进行校准前要确定校准机构单位是否具有校准认证资质。
校准的周期怎么规范呢？1、对于绝大部分测试仪器来说，业内基本要求1 年进行一次校准，例如示波器，万用表，信号发生器，探头等。
但是当使用环境或者应用的场景不同可能会有不同的校准要求，例如在极端的测试环境下，或者关键测量时，可能要更频繁的进行仪器的校准。
2、当出现测试错误，或者仪器的过载及跌落时，需要对仪器进行校准确认。
3、当仪器进行重大的系统更新或者硬件的指标的更新，需要进行返厂校准。
符合规范的仪器校准可以确保测试仪器的可靠性，延长仪器的使用寿命，大大降低操作人员的安全隐患。
例如，通过对测试仪器定期的校准可以及早发现并排除潜在的风险，否则可能导致操作人员的人身伤害。
三、操作条件示波器作为测试仪器，必须要知道其使用的环境及要求，其中包括使用和存储的环境条件及操作人员的操作条件及测试信号的规格条件。
对于示波器尤其对于高频信号测试示波器（至少2GHz 以上带宽示波器）来说尤按下电源开关之前，请将示波器连接到电中性基准点，如大地。
避免ESD 静电损坏，完成这一操作的方法是将带有三个插脚的电源线插到与大地相连的电源插座。
示波器接地对于安全性和精确测量都是必要的。
示波器需要与正在测试的所有电路共享同一接地端。
如果正在使用静电敏感部件，请将自身接地。
在您身体中累积的静电可能损坏静电敏感的部件。
佩带接地腕带可以安全地将您身上的静电荷传至大地。
1、什么是ESD? 感觉效应当< 500V 时，你看不到、摸不着、闻不到ESD 事件，但其仍能导致损坏在2000 V 时，你能感觉的到ESD在5000 V 时，你能听到ESD在10000 V 时，你能看到ESD2、为什么要关注ESD 损坏?尽管ESD损坏更多地与有源设备相关，但不管是有源设备还是无源设备，都可能会发生ESD损坏。
无源器件发生的ESD损坏包括：由于ESD生成的电流过高而给电阻器带来热破坏；由于ESD生成的电压过高而使电容器发生电压故障。
有源器件发生的ESD损坏包括：热故障和中断故障，以及更加复杂的故障机制，如金属迁移和闭锁。
3、为什么不提供足够的内部或外部ESD保护?由于保护网络的寄生信号，在高速放大器输入中增加,ESD 保护会降低速度性能。
ESD 保护与信号速度性能之间总是一对矛盾。
一般来说，由于性能提高，设备速度越高，体积会越小，对ESD放电也就越灵敏。
基于这种原因，性能较高的测量设备对ESD的灵敏度一般要高于性能较低的测量设备。
4、总结：ESD 灵敏度是一个设计问题，而不是一个质量问题，你躲不过高性能仪器设计的物理极限!高性能产品要求更快的IC工艺，因此设备尺寸会更小。
设备尺寸越小，ESD 灵敏度越高。
内部ESD保护装置的尺寸不能象信号设备的尺寸那样成比例扩大，因为ESD保护需求保持相对固定。
但是，内部ESD保护设备的尺寸必需缩小，以降低速度较高的性能所产生的寄生这些要求相互矛盾，因此需要设计在性能与ESD 灵敏度之间折衷，以实现一流的测量性能。
5、示波器发生ESD 损坏有哪些症状?仪器带宽下降SPC ( 信号路径补偿) 和自检故障故障可能会突然间开始出现，因为在较长时间内可能会有多个ESD事件，会积累足够的损坏，阻碍SPC 正确工作。
6、预防ESD 损坏的推荐作法保证测量设备、测试电路(DUT) 和ESD 保护元器件正确接地只在具有ESD 保护的区域中使用高性能测量设备在不用时，把测量设备和探头存放在有保护的环境中对使用ESD 灵敏设备的所有人员提供培训随时提供所有必要的设备(工作站, 腕带, ESD外套, 腕带检验装置, 等等)检查工作站垫, 传导表面, 定期焊接在使用测量设备时，检查腕带、脚带及与DUT 的焊接连接样机留给客户时，要配备最低数量的ESD 保护设备四、测试条件明确示波器在不同阻抗条件下对信号输入的要求，可以很大程度避免示波器因为输入信号超出量程能力导致的示波器的损坏，以下参数为直接输入（未使用示波器探头时）输入指标参数：1、捕获系统：1 MΩBNC 处中心导线与屏蔽之间的最大电压为400 V峰值(DF ≤39.2%)，130 MHZ 以下时的250 VRMS 降额到500 MHZ 时的2.6 VRMS。
最大瞬时承受电压是±800 V 峰值。
对于稳态正弦波形，200 kHz 以上时以20 dB/10 倍频程下降，至3 MHz 及以上时为13 Vpk。
2、捕获系统：50WBNC 处中心导线与屏蔽之间的最大输入电压为5 VRMS，峰值≤±20 V (DF ≤6.25%)在操作示波器之前了解示波器使用的条件是非常重要的，能更好的保护您的设备，更好的保证示波器优异的测试性能和稳定性，是延长示波器使用寿命的重要因素。
3、外部触发：1 MWBNC 处中心导线与屏蔽之间的最大电压为400 V峰值(DF ≤39.2%)，2 MHZ 以下时的250 VRMS 降额到500MHZ 时的5 VRMS。
最大瞬时承受电压是±800 V 峰值。
对于稳态正弦波形，200 kHz 以上时以20 dB/10 倍频程下降，至3 MHz 及以上时为13 V 峰值。
4、探头电气性能及指标：环境条件：对于示波器操作人员来说，首先应了解该仪器使用的允许环境条件，这个分为工作和非工作状态，对于很多测试场景来说非常重要，尤其面对恶劣的测试环境，除掉可能测试结果不准确不稳定以外，可能还会导致机器的损坏。
以下以泰克DPO4000 为例介绍示波器使用的环境条件。
温度：工作状态：+0℃到+50℃非工作状态：-20℃到+60℃湿度：工作状态：高温：40℃到50℃，0% 到60% RH 工作状态：低温：0℃到40℃，10 到90% RH 非工作状态：高温：40℃到60℃，5 到60% RH 非工作状态：低温：0℃到40℃，5 到90% RH海拔高度：工作状态：3,000 米（约10,000 英尺）非工作状态海拔高度：12,192 米（40,000 英尺)随机振动：工作状态：0.31 GRMS，5 - 500 Hz,，每个坐标轴10 分钟，3 个坐标轴（共30 分钟）非工作状态：2.46 GRMS，5 - 500 Hz,，每个坐标轴10 分钟，3 个坐标轴（共30 分钟）安泰测试技术工程师提醒：在操作示波器之前了解示波器使用的条件是非常重要的，能更好的保护您的设备，更好的保证示波器优异的测试性能和稳定性，是延长示波器使用寿命的重要因素。
以上是泰克示波器代理商——安泰测试为大家整理的泰克示波器维护保养手册，如果大家在使用示波器过程中有什么疑问，欢迎咨询安泰测试。