Scope and Multimeter Operations
General Reference (Testing Strategies)
145
9.16.8 Pressure Transducers and Adapters (optional)
Different pressure transducers and adapters are available for measuring positive
and negative gas and liquid pressures. Depending on the adapter, measurement
capabilities range from 1 to 5000 psi and up to 29 inHg. Measurement and
application capabilities vary per device.
Figure 9-84
9.16.9 Waveform Demonstration Tools (optional)
To help you sharpen your lab scope and graphing multimeter skills, optional
waveform demonstration tools are available as a training aid. These demonstration
tools generate common waveforms, and allow you to vary their display
characteristics by turning glitches on/off, helping you to become more familiar with
the lab scope controls. Common waveforms include, AC sine wave, variable
frequency and pulse, secondary ignition, and more. There are two tools currently
available, the standard model (
left) and the vehicle simulator model
right) which produces waveforms (e.g. Crankshaft Position Sensor
(CKP), Camshaft Position Sensor (CMP), Accelerator Pedal Sensor (APP), Wheel
Speed Sensor (WSS) Signals, and more) representative of a 2012 BMW 328i
Sedan.
Figure 9-85
9.17 General Reference (Testing
Strategies)
9.17.1 Basic Setup Tips (unknown signal type)
When conducting automotive diagnostics, situations may arise when you need to
capture and analyze a signal that you are not familiar with, do not know what the
intended waveform pattern should look like, or even how to set the scope to acquire
the signal.
The following tips are intended to provide guidance, at the most basic level to assist
you in your lab scope diagnostics.
Testing information and/or procedures for testing certain components may be
available in the Guided Component Test function, see
for additional information. If you have already narrowed down the system
and/or component to test, ID the vehicle within the Guided Component Test
function, and check the available tests first, as this may save you some time.
If the Guided Component Test function, does not have the test you are looking for,
you need to determine are few thing about what you are testing to get the scope /
meter set up to capture a signal or make a measurement.
NOTE
Testing information and known good waveform libraries may also be available
from other sources (e.g. ShopKey Pro or other online sources). Obtaining
correct testing reference information can be a key advantage in making sound
repair decisions.
