December 2022 - S18
LEARNING TOOLS
display a subtle fault that is not apparent
to the naked eye. The vertical cursors
can offer a more scientific approach to
waveform analysis.
Like the vertical cursors, the scope
may also offer two horizontal cursors to
display a signal amplitude measurement,
regardless of the domain you are measuring
in (voltage, amperage, duty-cycle,
pressure, temperature, etc.). For the same
valuable reasons, the horizontal cursors
can display minor variations that are not
easily visible.
Rulers are another hot commodity.
Vertical cursors are handy when calculating events like the dwell of an ignition coil or the duration of a
spark event. The image above displays the duration of a 720-degree engine cycle.
The rulers use the scope software to
associate elapsed time with either percentage
or degrees of rotation. A truly
valuable tool, especially when it comes
to engine mechanical analysis. Although
this type of calculation can be easily performed
using only the vertical cursors
and a calculator, implementing the rulers
allows the information to be displayed
directly and instantaneously on the
scope screen. The measuring cursors can
then be used to determine delta degrees
(indicating the duration of an event, like
the open time of a cylinder's intake or
exhaust valve).
The horizontal cursors measure the amplitude or value of a signal when used singularly or the
difference value between two measuring-points when used in tandem.
OVERLAY SOFTWARE
One of the most important tools I own
besides the DSO is what is known as
overlay chart software. The software
offers many different configurations to
allow for the accomplishment of multiple
tasks. However, the one feature I'm
most fond of is known as a piston chart.
I frequently perform many enginemechanical
analyses, and a common
issue I face is explaining my findings
to my customers (or fellow technicians
wanting to learn). The Piston chart
offers me the ability to point out what
it is I'm seeing in the capture. In other
words, to tell the story as it unfolds.
The piston chart is handy because it
The rulers use the scope's software to associate elapsed time with either " percentage " or " degrees of
rotation. " A truly valuable tool, especially when it comes to engine mechanical analysis.
references all cylinder activity simultaneously,
anywhere within the entire
18 DECEMBER 2022 VehicleServicePros.com
http://www.VehicleServicePros.com
December 2022
Table of Contents for the Digital Edition of December 2022
EDITOR'S NOTE
NEW PRODUCTS
TOOL BRIEFING
DIAGNOSTIC TECH
TOOL REVIEWS
CATEGORY SPOTLIGHT
TOP 100 PRODUCTS
SEMA/AAPEX EDITOR'S PICKS
INNOVATION AWARDS PROFILE
SEMA/AAPEX WRAP UP
BIG-TIME BOXES
Diagnosing Progress
Common diagnostics and trends in hybrid and electric vehicles
Diagnosing faults on modern vehicles
The real cause of P0420/P0430 DTCs
How diagnostic tools cut through the ADAS confusion
When the tools become the tutor
Diagnostic products
December 2022 - 1
December 2022 - 2
December 2022 - 3
December 2022 - 4
December 2022 - 5
December 2022 - 6
December 2022 - EDITOR'S NOTE
December 2022 - NEW PRODUCTS
December 2022 - 9
December 2022 - 10
December 2022 - RSC1
December 2022 - RSC2
December 2022 - 11
December 2022 - TOOL BRIEFING
December 2022 - 13
December 2022 - 14
December 2022 - 15
December 2022 - 16
December 2022 - 17
December 2022 - DIAGNOSTIC TECH
December 2022 - 19
December 2022 - 20
December 2022 - 21
December 2022 - TOOL REVIEWS
December 2022 - 23
December 2022 - 24
December 2022 - 25
December 2022 - CATEGORY SPOTLIGHT
December 2022 - 27
December 2022 - 28
December 2022 - 29
December 2022 - 30
December 2022 - 31
December 2022 - TOP 100 PRODUCTS
December 2022 - 33
December 2022 - 34
December 2022 - 35
December 2022 - SEMA/AAPEX EDITOR'S PICKS
December 2022 - 37
December 2022 - INNOVATION AWARDS PROFILE
December 2022 - SEMA/AAPEX WRAP UP
December 2022 - 40
December 2022 - 41
December 2022 - BIG-TIME BOXES
December 2022 - 43
December 2022 - 44
December 2022 - S1
December 2022 - S2
December 2022 - S3
December 2022 - Diagnosing Progress
December 2022 - S5
December 2022 - Common diagnostics and trends in hybrid and electric vehicles
December 2022 - S7
December 2022 - Diagnosing faults on modern vehicles
December 2022 - S9
December 2022 - The real cause of P0420/P0430 DTCs
December 2022 - S11
December 2022 - How diagnostic tools cut through the ADAS confusion
December 2022 - S13
December 2022 - S14
December 2022 - S15
December 2022 - When the tools become the tutor
December 2022 - S17
December 2022 - S18
December 2022 - S19
December 2022 - S20
December 2022 - Diagnostic products
December 2022 - S22
December 2022 - S23
December 2022 - S24
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