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LAUNCH PAD V
User's Manual
7.3 Oscilloscope (Optional)
7.3.1 Introduction
The Scopebox is an optional add-on module of this tablet, including
automotive oscilloscope and automotive ignition waveform.
Automotive oscilloscope can make the auto repair technician quickly
judge the faults on automotive electronic equipment and wiring, and
the oscilloscope sweep speed is far greater than the signal frequency
of such vehicles, usually 5-10 times of the measured signal. The
automotive oscilloscope not only can quickly acquire the circuit signal,
but also can slowly display the waveform to observe and analyze.
It can also record and store the tested signal waveform which can
be recalled to observe for the fast signal, having great convenience
to failure analysis. Either high-speed signal (e.g.: Injection nozzle,
intermittent fault signal) or the slow-speed signal (e.g. the throttle
position change and the oxygen sensor signal) can be observed
through automotive oscilloscope in an appropriate waveform.
The electronic signal can be compared and judged via measuring
fi ve parameters indexes. The fi ve parameters are the amplitude (the
maximum voltage of signal), the frequency (the cycle time of signal),
the shape (the appearance of signal), the pulse width (the duty cycle
or the time range of signal), and the array (the repetition characteristic
of signal), which can be tested, displayed, saved by the automotive
oscilloscope. Via the waveform analysis can further detect the circuit
fault on sensors, actuators, circuits, and electronic control units, etc.
7.3.2 Structure & Accessories
7.3.2.1 Scopebox structure
Fig. 7-20 Scopebox Structure Diagram
Below describes the ports and indicators for the Scopebox.
No. Name Descriptions
1
Fixed signal
generator
Generate a square signal with fi xed 1K
frequency.
2 CH1 Channel 1
3 CH3 Channel 2
4 CH3 Channel 3
5 CH4 Channel 4
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