An acquisition instrument usually an oscilloscope or logic analyzer is probably the first thing that comes to mind when you think about making electronic measurements. Then in 1947 howard vollum and his newlyformed company, tektronix, announced the first commercially available triggeredsweep oscilloscope. No mathematical or electronics knowledge is necessary. Each signal from each pair of probes is measured in each chennel. Differential oscilloscope measurements a primer on differential measurements, types of amplifiers, applications, and avoiding common errors simulated 4 mv pp heartbeat waveform can not be measured in the presence of 500 mv pp, 60 hz commonmode noise, using a conventional oscilloscope probe upper. An oscilloscope can measure multiple values to compare them simultaneously. In most applications, the graph shows how signals change over time. In order to make measurements, the oscilloscope must be connected to the componentsdevices being measured. Tektronix tds7404 digital phosphor oscilloscope dpo. Early oscilloscopes could display only repetitive or continuous electrical events, which limited their application. Tds 200 series digital oscilloscope service manual ix preface the service manual for the tds 200series digital realtime oscilloscope provides information to troubleshoot and repair the instrument to the module level. Oscilloscope restoration project repair tektronix 2465b 400mhz this applies to all similar type models 2445, 2445a, 2445b, 2465, 2465a, 2465b, 2467, 2467a, 2467b and others which share common circuit boards. Packed with standard features including usb connectivity, 16 automated measurements, limit testing, data logging, and contextsensitive help. Energy, vibrating particles, and other invisible forces are everywhere in our physical universe.
The tbs digital storage oscilloscope series provides you with affordable performance in a compact design. Oscilloscope primer an oscilloscope enables us to display the measured voltage with respect to time. View and download tektronix 2235 instruction manual online. The tds 220 oscilloscope can produce digital readouts of most of the relevant input signal parameters, including frequency, period, mean average voltage, and peaktopeak voltage. Tektronix 4000 series digital phosphor oscilloscopes user.
Understanding key highperformance oscilloscope specifications explains the most important oscilloscope performance characteristics and how they can. Tds and tds2000 series digital storage oscilloscope user. To understand how vital, disconnect the probes from an oscilloscope and try to make a measurement. You start by using an oscilloscope in infinitepersistence mode to check the peaktopeak jitter on the data clock. The glossary in the back of this primer will give you definitions of unfamiliar terms. Figure 1 front panel layout of tds2012 digital storage oscilloscope. To open downloaded files you need acrobat reader or similar pdf reader program. In todays fastpaced world, engineers need the best tools available to solve their measurement challenges quickly and accurately.
The concepts presented in this primer will provide you with a good starting point in understanding oscilloscope basics and operation. Tektronix tds 2012 digital storage oscilloscope users guide. Since an oscilloscope can store only a limited number of samples, the waveform duration time will be inversely proportional to the oscilloscopes sample rate. The tektronix abcs of probes primer is a comprehensive guide explaining what a probe is, the different types of probes available and what they do, understanding probe specifications and how to select the right probe, probing techniques, plus a comprehensive glossary of probing terms. New tektronix oscilloscopes from testequity xyzs of oscilloscopes primer pdf, 3. If there are two channels, it is called a twochannel oscilloscope. User manual tds and tds2000series digital storage oscilloscope 071106400 thisdocumentsupportsfirmwareversion fv. Service manuals, schematics, eproms for electrical technicians. Such an instrument is obviously useful for the design and. Understanding key high performance oscilloscope specifications.
This probe cable allows the oscilloscope to be left in a stationary position on a cart or. While the oscilloscope is certainly capable of looking at the same digital signals as a logic analyzer, most oscilloscope users are concerned with analog measurements such as rise and falltimes, peak amplitudes, and the elapsed time between edges. Oscilloscopes can be classified in two major categories analog and digital types. Theory the oscilloscope, or scope for short, is a device for drawing calibrated graphs of voltage vs time very quickly and conveniently. Compensate for ambient lighting, trace speed, trigger frequency. The oscilloscope is basically a graphdisplaying device it draws a graph of an electrical signal. Tektronix xyzs of oscilloscopes and oscilloscope reference kit. Digital oscilloscopes can be classified into digital storage oscilloscopes dsos, digital. This guide gives an overview of the various types of oscilloscopes currently available, along with highlevel specifications that you can use for comparison. Understanding key highperformance oscilloscope specifications choosing an oscilloscope is a decision that can impact the efficiency of your work and the validity of your measurements. Tds 200series digital realtime oscilloscope service manual. You find a peaktopeak value of 550 psec, and the spec says you must have less than. Tektronix tbs1064 digital storage oscilloscope testequity. Should you need additional assistance, or have any comments or questions about the material in this primer, simply contact your tektronix representative, or visit figure.
Before you begin evaluating oscilloscopes, you need to understand the basics of waveforms and waveform measurements. Should you need additional assistance, or have any comments or questions about the material in this primer, simply contact your tektronix representative, or visit. Summary of controls, connectors, and indicators no. To make this possible, most probes have at least a meter or two of cable associated with them, as indicated in figure 12. Tds and tds2000 series digital storage oscilloscope. In 1961, tektronix sold its first possibly the worlds first practical completely portable oscilloscope, the model 321.
This primer helps you understand all of these elements so you can choose and use the oscilloscope appropriate for your application. Tektronix xyzs of oscilloscopes and oscilloscope reference. Featuring the same user interface as the tektronix tds oscilloscope family, your students will learn to operate the worlds most. Application note your oscilloscope provides features and tools to help you deal with noise. Signal integrity the significance of signal integrity the key to any good oscilloscope system is its ability to accurately reconstruct a waveform referred to as signal integrity. There has to be some kind of electrical connection, a probe of some sort between the signal to be measured and the oscilloscope s input channel. Typically, either a bncbnc cable or an oscilloscope probe with a. It also brought the oscilloscope into the transistor age only a nuvistor ceramic tube was used for the vertical amp input. The 2215 is a dual time base oscilloscope with more features and capabilities. To avoid personal injury, do not perform any servicing unless you are qualified to do so. In 1897, the behavior of cathode ray indicated the. Tektronix primer on probes etc when the probe is first connected to the oscilloscope, compensate it by applying a low frequency square wave 1 to 10 khz normally to achieve the equalization of time constants.
The vocabulary and multiplechoice written exercises on oscilloscope theory and controls make this primer a useful classroom aid. Tds 200series digital realtime oscilloscope 071049202 this document supports firmware version 1. Probes also affect the signal integrity of a measurement system. Refer to all safety summaries prior to performing service. Abcs of probes primer to make an oscilloscope measurement, you must first be able to physically get the probe to the test point. Should you need additional assistance, or have any comments or questions about the material in this primer, simply contact. Tektronix 4000 series digital phosphor oscilloscopes user manual.
The tbs1064 digital storage oscilloscope offers usb connectivity, automeasurements, limit testing, and data logging. If you need a refresher on oscilloscope specifications, download the xyzs of oscilloscopes primer. Each channel has its own set of control to adujust its scale of voltage and other values. The oscilloscope is arguably one of the most useful general purpose tools ever created for use by electronic engineers. Xyzs of oscilloscopes the oscilloscope is an essential tool if you plan to design or repair electronic equipment. A medical re searcher uses an oscilloscope to measure brain waves. Oscilloscope fundamentals case school of engineering.
Some tds models have two input channels and an external trigger while other models have four input channels. If you have comments or questions about the material in this primer, please don t hesitate to write. The tektronix tds 220 oscilloscope a very brief introduction. An oscilloscope is analogous to a camera that captures signal images that we can then observe and interpret. Power supply measurement and analysis primer graphic band height 4 a4 crop us crop red bar always on the left always the same size inner portion of graphic band keep color bars, transparency, partitions, and photos to the grid preferred is one or two photos, with a maximum of three photos maximum of three partitions grid.
Fundamentals of signal integrity primer digital technology and the information age it has been two decades since the personal computer emerged in its current form, and almost 15 years since cellular telephony became a consumer phenomenon. The waveforms can be different due to the voltage sources. Note that the amplitude of a sine wave is the zerotopeak voltage, not the peaktopeak value. Swift 16671745 objective to learn to operate a cathode ray oscilloscope. Over that span of time, one trend has been constant. With the oscilloscopes builtin tools such as cursors and automated measurements, its easy to track down the signal integrity problems that can impact your design.
The digital oscilloscope is an indispensable tool for anyone designing, manufacturing or repairing electronic equipment. Title function recommended use 1 intensity adjusts trace brightness. Oscilloscopes are indispensable tools for anyone designing, manufacturing or repairing electronic equipment. A dso provides an ideal solution for nonrepetitive, highspeed, multichannel digital design applications. On the front panel, there are three bnc f connectors for this purpose labeled ch1, ch2, and ext trig. Power supply measurement and analysis mouser electronics. This oscilloscope could run on ac line power mains or on rechargeable batteries. The oscilloscope provides a window into the world of electrical signals. The different systems and performance capabilities of an oscilloscope contribute to its ability to deliver the highest signal integrity possible. Warning the servicing instructions are for use by qualified personnel only. Please refer to the sample ratesection under performance terms and considerations for a more detailed discussion. For singleshot and transient events, such as pulses and steps, the bandwidth can be limited by the oscilloscopes sample rate. Improper compensation will result in either overshoot, rolloff or incorrect signal amplitudes see compensation effects figure probe. Since its invention more than 100 years ago, new types, features and functionalities have been introduced.