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Product Spotlight Seminar: Labscopes! Are you: Go to this all-day seminar on Saturday October 4th, 2003 to get your
questions answered. Part lecture and part hands-on you will learn: • Basic triggering • How to evaluate the screens • Optional accessories • Applications for the labscope • Integrating the labscope into your diagnostic routine • Diagnostic databasing • Where to find more information about specific application • See a variety of labscopes that are available for the auto technician • Determine the correct labscope for your needs & budget The Instructor: The Class: To Register or get answers to your questions: Product Spotlight: Jorge started AES in the early-90's when there were no "handheld" automotive lab scopes. There was just generic industrial lab scopes with short flimsy test leads, not very practical for automotive applications. But
Jorge knew two things: So he designed and built his own set of test leads for automotive testing and wrote a book explaining how to use them with industrial lab scopes. He conducted seminars, wrote articles, and provided extensive technical support to technicians and manufacturers, earning a reputation as "the lab scope expert". Today, AES continues to sell Jorge's test leads to both users and manufacturers. In fact, many of the handheld automotive lab scopes on the market include some level of Jorge's influence and/or test leads. Here is a short overview of these leads and their application: Low
Pass
Filter Test
Lead Ideal for the low pass filter are scopes such as the LS-2000 and ADL-7100 which are always in peak detect mode that can easily result in a noisy signal. More product specific information... AC Pass Filter Test
Lead The Snap-on Vantage, OTC Vision, and Interro PDA do not have AC input coupling. More product specific information... 10:1 probe ·
Increase the input impedance of instruments rated at 1 meg to 10 meg. ·
A 10 volt signal at the probe tip becomes 1
volt at the instrument. · If your instrument has a maximum voltage rating of 200 volts, with a 10:1 it becomes 2000 volts (DC only). If you own a Mastertech, Interro PDA, OTC Vision, or other scope that kills the vehicle when connecting to the primary ignition you could use a 10:1 probe. Many instruments have a voltage protection diode rated at 200 volts. Connect to primary ignition and this disrupts the field collapse. A 10:1 probe will prevent this. The AES
10:1 probe can be used for most scopes including as a replacement for
the Interro PDA O2 sensor probe. AES also has a low pass 10:1 version. Secondary Test
Lead Trigger (Synch) Probe
Test Lead Technical Article: Part 2 of 3 Why are Distributor-less ignition patterns difficult to acquire? Mac Vandenbrink has some answers to this question and has proposed a solution in his 22-page operator's manual for his soon-to-be-released product: “The FIRE-BOX”
Part 3 (In October newsletter)
Here is an introduction from Mac: DIS has always given an unstable scope pattern because it has no reference to ground like any other ignition system. This not only causes the KV readings to fluctuate, but it also affects the rest of the pattern with inconsistent waveforms. It is tolerable when the vehicle has no problem, but when the difference between waste and compression increases, the zero offset acts like a yoyo, Some of the more sophisticated scopes use a filter or use a voltage averaging. (Both have drawbacks). Lab-Scopes don’t even have that luxury. Hypothetically, if the coil would have been center-tapped to ground, the scope would be happy as a Lark. Since the scope uses ground as a reference point, but the ignition system uses the motor-block only as a conductor, which is not center between the coil towers, the waveform will vary from stroke to stroke and you will seldom see the same waveform twice. Read the booklet to learn about Mac's solution and to get some hints and techniques for dealing with DIS problems. This booklet is heavily illustrated and to keep file size down we split it into 3 PDF files but it may still take a while to download. Last article by Bill Lakow: Testing for Low-Flow Injectors Contact AES Automotive Electronics Services, Inc. 3849 N Fine Ave #102 Fresno CA 93727 559-292-7851 carlos@aeswave.com Unsubscribe to this newsletter Subscribe to this Newsletter
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at AES! September
Special! Click here for additional Specials Find more equipment at Universal Tools
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