Advanced Automotive Fault Diagnosis
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LÔØI NOÙI ÑAÀU, ledklok
| automotive oscilloscope
(PicoScope) Author’s Note: This section will outline the use and features of the PicoScope ® automotive oscilloscope. I have chosen this PC based scope as a case study because it provides some very advanced features at a very reasonable price. At the time of writing (early 2006) the price was about £800/$1400 – very rea- sonable for such a useful piece of equipment. Most (if not all) of the example waveforms in this book were captured using this diagnostics kit. For more informa- tion: www .picoscope.com. The latest PicoScope two-channel PC oscillo- scope automotive kit is an ideal diagnostic tool. It is designed with mechanics and automotive technicians in mind, allowing fast and accurate diagnosis of all the electrical and electronic com- ponents and circuits in a modern vehicle. The kit includes all of the components necessary to test the engine and other systems for abnormalities. It is supplied with excellent automotive software Tools and equipment 29 Figure 3.6 Multiscope to collect, display, store and analyse readings. The accessories including current clamps, ignition pick ups, test leads and probes, come packaged in a hard-wearing carry case. The powerful combination of the two-channel oscilloscope diagnostic kit and PicoScope automo- tive software allows thorough testing of the multi- tude of sensors and actuators in current vehicles (Figure 3.7). The software contains a technical ref- erence library of tests and tutorials on over fifty topics, illustrated with waveforms. The compo- nents and circuits that can be tested include igni- tion, injectors, ABS, lambda oxygen sensors, relative compression, fuel pumps, CAN Bus and many others. The kit is a cost-effective ignition and engine diagnostic tool for all automotive technicians. The two-channel automotive kit contains, amongst other things, the following items: ● PicoScope 3223 automotive oscilloscope ● 600 A AC/DC current clamp ● 60 A DC current clamp ● Wide range of general leads, clips and probes for all applications ● Secondary ignition pickup leads ● 2-pin break out lead. The equipment is connected to, and powered through, the USB port on any modern PC or lap- top. This eliminates the need for a power supply or batteries. The two-channel PC oscilloscope in the new kit has an improved sampling rate of 20 MS/s, a 12 bit resolution, a huge buffer memory of 512 k samples and an excellent 1% level of accuracy. The automotive software is continually updated and free upgrades are available from the Pico Technology web site. The kit even comes with lifetime technical support from the Pico automo- tive specialists. The waveforms in Chapter 4 were all captured using this equipment. tải về 7.07 Mb. Chia sẻ với bạn bè của bạn:
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