LAUNCH
X-431 GDS User’s Manual
60
9. Optional functions brief for X-431 GDS
9.1 Oscilloscope
X-431 GDS has an optional function of oscilloscope, which can make the auto
repair technician quickly judged the faults on automotive electronic equipment
and wiring. If using an ordinary oscilloscope to test the electronic equipment,
the biggest problem is how to set the oscilloscope (adjust the display
parameters of oscilloscope to make the waveform become clear), while using
the automotive oscilloscope can make the setting on testing automotive
electronic equipment become simple and intuitive (via automatic setting
function), just via clicking "Automatic settings", the waveform can be directly
observed without any setting and adjustment. For some automotive electronic
equipment, the signal change rate is very fast, whose cycle reached a
thousandth, besides, many fault signals are intermittent, and unsteady, which
makes the ordinary equipments, such as decoder, Multimeter etc., hard to
capture such fault signal and affects the fault diagnosis and trouble; 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 capture 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 playback 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.
We know that the electronic signal can be compared and judged via testing
five parameters indexes. The five parameters indexes 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.
For detailed operations and specifications, please refer to X431 GDS
Scopebox user’s manual.
Содержание X-431 GDS
Страница 1: ...V1 00 001 2011 12 07...
Страница 36: ...LAUNCH X 431 GDS User s Manual Figure 3 1b Figure 3 1c Figure 3 1d 29...
Страница 49: ...LAUNCH X 431 GDS User s Manual Figure 3 21 42...
