Launch X431 Scopebox User manual
LAUNCH X431 PAD Scopebox User’s Manual
Precaution on Operation
zThe appliance is a sophisticated electronic device, never have it clashed
when in use.
zMain unit screen may flash at the moment of engine ignition, which is
normal.
zYou may unplug the main unit if the program can not be actuated or
confused screen occurs. Plug again to continue the operation.
zMake sure the appliance is properly connected to the DLC to avoid
communication interruptions.
zDuring operation, keep the screen upward and leveled.
zBe careful when plugging and unplugging the main cable and diagnostic
connector. Tighten the screw before operation to avoid unexpected
disconnecting and/or damage to the port.
zHandle with care.Avoid collision. Unplug the power after operation.
zAfter the operation, the stylus shall be inserted into the slot on the main
unit, and put away the cable and connector, etc accessories to the box to
avoid the lost.
zUnplug the power cable by holding the connector, not the cable itself.
LAUNCH X431 PAD Scopebox User’s Manual
Table of Contents
1 FOREWORD......................................................................................1
1.1 INTRODUCTIONS ...........................................................................1
1.2 PRODUCT FEATURES.....................................................................1
1.3 PRODUCT FUNCTION.....................................................................2
1.4 TECHNICAL PARAMETERS..............................................................2
2 STRUCTURE AND ACCESSORIES .................................................3
2.1 SCOPEBOX STRUCTURE................................................................3
2.2 SCOPEBOX ACCESSORIES.............................................................4
3 AUTOMOTIVE OSCILLOSCOPE...................................................... 6
3.1 CONNECTION................................................................................6
3.2 INITIAL INTERFACE INTRODUCTION.................................................6
3.3 OPERATIONS.................................................................................7
3.3.1 Channel selection and attributes setting..............................7
3.3.2 Trigger setting.......................................................................9
3.3.3 Auto calibration...................................................................11
3.3.4 Display settings................................................................. 12
3.3.5 Channel and cursor measurement.................................... 12
3.3.6 File management............................................................... 13
3.3.7 View the software version ................................................. 15
3.3.8 Exit the application............................................................ 15
4 AUTOMOTIVE IGNITION WAVEFORM ..........................................16
4.1 SECONDARY-DISTRIBUTOR IGNITION ANALYSIS.............................16
4.2 SECONDARY-SIMULTANEOUS IGNITION ANALYSIS..........................19
4.3 SECONDARY-DIRECT IGNITION ANALYSIS......................................20
4.4 WAVEFORM ANALYSIS MODE........................................................22
LAUNCH X431 PAD Scopebox User’s Manual
1
1 Foreword
1.1 Introductions
X-431 PAD is a new generation of sophisticated and integrated automotive
diagnostic product with colorful screen and powerful functions developed by
LAUNCH, and Scopebox is an optional function box for X-431 PAD, including
automotive oscilloscope and automotive ignition waveform.
Automotive oscilloscope can make the auto repair technician quickly judged
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 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 played back 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 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.
1.2 Product features
zRapidly capture the circuit signal.
zDisplay waveform slowly for observation and analysis.
zRecord and store the tested signal waveform for playback and failure
analysis.
LAUNCH X431 PAD Scopebox User’s Manual
2
zDetect, display and store all the electrical signal of five parameters,
namely amplitude, frequency, shape, pulse width, and array.
1.3 Product function
Provides specialized automotive oscilloscope function and supports ignition
waveform analysis.
1.4 Technical parameters
Scopebox: 4 channels, highest sampling frequency 200MHZ, max storage
depth 64MSa, 8-bit resolution.
LAUNCH X431 PAD Scopebox User’s Manual
2 Structure and Accessories
2.1 Scopebox structure
Fig 2-1 Scopebox Structure Diagram
Table 2-1 shows the ports and indicators for X-431 PAD Scopebox
No. Name Description
1 CH1 Channel 1
2 CH2 Channel 2
3 CH3 Channel 3
4 CH4 Channel 4
5 External trigger External trigger signal
6 Fixed signal
generator Generate a square signal with fixed 1K frequency
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LAUNCH X431 PAD Scopebox User’s Manual
7 Power indicator Oscilloscope power indicator, which will be steady
red after the oscilloscope is powered on
8 Operating
indicator The indicator will be steady green after the
oscilloscope operated.
9 Communication
indicator After the data communication, the indicator will
blink (Green).
10 Power interface Connect to power supply via the power adapter.
11 B-shaped USB
interface Connect main unit via USB connect line as
separated individual USB devices
2.2 Scopebox accessories
Scopebox includes the secondary pickup cable for 4-channel oscilloscope,
crocodile clips for 4-channel oscilloscope, etc. See Table 2-2.
As the product configuration can be different, the accessories included with the
product may differ from the accessories listed on this manual. Please see the
packing list attached to the product for the detailed accessories.
Table 2-2Accessory checklist
No. Name Picture
1 Secondary ignition pickup for
4-channel oscilloscope
2 Crocodile clips for 4-channel
Oscilloscope
3 Direct ignition extension cord
4
LAUNCH X431 PAD Scopebox User’s Manual
4 6-way universal guide line for
4-channel oscilloscope
5 BNC to 4mm connector test
cable
6 Pin connector for 4-channel
oscilloscope
5
LAUNCH X431 PAD Scopebox User’s Manual
6
3 Automotive Oscilloscope
3.1 Connection
X-431 PAD Scopebox should work with the X431 PAD main unit.
1. Firstly, power on the main unit (Connect one end of the power adaptor into
the power interface of main unit, and the other end to the DC 12V power
supply. Alternatively it can be also powered by cigarette lighter cable and
double clip power cord).
2. Then plug one end of ground cable of oscilloscope into external trigger
channel (GND), the other end should be grounded.
3. Connect one end of probe cable of oscilloscope to the CH1, CH2, CH3, or
CH4 on oscilloscope module, and then connect the other end to related
signal terminal.
Warning: please use the specific capacitance probe when diagnosing the
ignition high voltage line. Never connect the oscilloscope to the ignition
secondary circuit directly.
3.2 Initial interface introduction
Fig. 3-1 displays the initial interface of oscilloscope.
LAUNCH X431 PAD Scopebox User’s Manual
Fig.3-1
Button descriptions:
[Autoset]: It indicates auto trigger setting. Based on the characteristics of
measured signal, the oscilloscope will automatically set the horizontal baseline,
vertical sensitivity and trigger condition so that the waveform can be displayed.
[File]: provideswaveform record and waveform replay.
[View]: Calibration and display settings are available.
[Measure]:includes signal source measurement, cursor measurement and
clear measurement.
[Settings]: displays or hides the parameter settings area including horizontal
settings, vertical settings and trigger settings.
[Start/stop]: starts/stops collecting oscilloscope waveforms.
3.3 Operations
3.3.1 Channel selection and attributes setting
<1> Channel selection
There are two ways available for channel selection: (See Fig. 3-2)
A. Select from the channel column shown at the bottom of the waveform
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LAUNCH X431 PAD Scopebox User’s Manual
display area;
B. Select from Vertical settings.
Note: For better comparison and identification, each channel and waveform
are marked in different colors.
Fig.3-2
<2> Channel attributes setting
Channel attributes can be set via horizontal settings and vertical settings.
Horizontal Settings
User can make some settings directly by clicking << or >> next to options.
Alternatively, Click located in the upper right corner of the horizontal
settings to make more settings. See Fig. 3-3.
Fig. 3-3
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Table of contents
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