Civil Engineering Reference
In-Depth Information
Fig. 6.8
C&S CAN Conformance DLL Tester architecture
signals. These signals are directly connected to the test system avoiding the use of
transceivers in order to obtain better signal manipulation and precise timing.
The UT is remote controlled—via CAN bus—from the
LT
, a specially equipped
PC. The test coordination is performed by a program executed on this PC.
The TCs are defined as ASCII script files. The script allows defining the frames
that will be sent by the LT and the expected IUT reaction. The script language per-
mits the complete manipulation of the CAN frames at sub-TQ level, allowing the
test engineer to debug the IUT and generate appropriates test reports.
As it is described in Fig.
6.8
, the test system consists of:
• A PC running on MS Windows®.
• The test controller software (C&S CAN CONFORMANCE TESTER v3.0).
• The test scripts.
• A logic analysis system equipped with a pattern generator. They are used to mea-
sure and generate the CAN frames respectively with high accuracy and reprodu-
cibility (see Fig.
6.9
).
• A coupler box that facilitates the signal interface with the IUT.
6.3.2
Main Test Types
The C&S Group classifies three main test types to be executed to ensure a sufficient
test coverage of a CAN node. These main test types are:
