LAUNCH KES-200 Starting System Analysis
E-6
connected to ground.
z
The secondary signal slice sensor should be
installed in place whenever it is used.
z
The ignition waveform may be unstable if the
secondary trigger mode is selected.
Primary Ignition Waveform
Waveform Display
When one item on the main menu for DISTRIBUTOR
or DLI is selected and entered, the screen will remind
the user to connect the test cable. If the test cable is
connected correctly and the inputted signal is detected,
the primary ignition waveform will be displayed
immediately on the screen as shown in Fig.4-13.
Fig.4-13
The primary waveform is the initial waveform
displayed when the ignition waveform test is
commenced. If the primary cable is not corrected
correctly the screen will display as in Fig.4-14.
Fig.4-14
When testing the DISTRIBUTOR or DLI ignition
waveform, if the cylinder 1 cable is not connected
correctly, the screen will also show tips to remind the
user to re-connect the cable.
If the above message appears, the user can exit the
ignition waveform test, and select the oscilloscope
function on the main menu. Then enter [2.AUTO
SETTING CHAN (CH1)] function to perform
[10.PRIMARY IGNITION] function for the sensor type.
When the engine is running, the ignition coil must
generate primary voltage and a waveform will be
displayed on the screen. If no waveform is output, the
primary cable must be connected incorrectly.
Display Control
The user can change the waveform display mode
according to the required needs, such as zoom in/out,
move/change, save/open, etc. On the screen, the
menu of expanded functions is displayed on the upper
part, waveform is on the central part, and the current
status is at the bottom, e.g. the DIV of time and
voltage, engine RPM, etc.
Description of the control menu:
1. [0.HOLD] --for freezing the waveform display
and showing the menu of expanded functions
The unit supports two modes, one is the normal mode
([0.HOLD] is not selected), and the other is the hold
mode ([0.HOLD] is selected). The menu of the former
is normal and that of the latter is for expanded
functions. The user can make detailed analysis on the
ignition waveform, save/open a designated waveform
by means of the menu of expanded functions.
When [0.HOLD] is not selected, the normal functions
include: [0.Locking], [1.Primary/secondary], [2.Time/
voltage], [3.Current page], [4. Cylinder number],
[5.Move], [6.Display], and [7.Positive/negative]
When [0.HOLD] is selected, the available functions
are as follows:
[0.Grid], [1.Primary/secondary], [2.Time/voltage],
[3.Current page], [4. Cylinder number], [5.Move],