Porsche PIWIS Tester III, Service Training, Page: 25 / 103

CHAPTER1
PIWIS Tester III (PT3)
19
Measuring system start page 9_33_16
The software for operating the measuring system interface is integrated in PT3.
The measuring system is used to determine and display electrical parameters on
vehicles with a supply voltage of between 12 V and 24 V. The test box (hardware)
is a mobile device and must be connected to the PT3 using a USB A/B connection.
The test box also needs an external power supply via the supplied power supply unit.
Once the test box is connected and the application is started, on-board diagnosis of
the system is performed. The measuring device itself contains 4 separately operating
test channels, which are used for current, voltage and resistance measurement and
for diode and continuity tests. The 4 channels are electrically isolated, insulated and
can be configured independently of each other.
In combination with the measuring system software, the measuring system interface
can be operated as a multimeter or a 4-channel oscilloscope. The digital, high-resolution
4-channel memory oscilloscope is used for recording signals and is designed specifically
for use in the motor vehicle industry. It has a new operator guidance feature, which makes
it much easier to use the oscilloscope and guides the user reliably to the required place.
It supports all Porsche vehicle types, their derivatives and all electronic components.
The oscilloscope can show all types of signals and bus systems.
Test box 9_34_16
Measuring system
Oscilloscope Measure programs
Digital multimeter Diode test
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