wlrush@poppy.waterloo.edu (Wench Wendall) (06/02/89)
DEPARTMENT OF COMPUTER SCIENCE
UNIVERSITY OF WATERLOO
SEMINAR ACTIVITIES
COMPUTER NETWORKS SEMINAR
(JOINT SEMINAR WITH ELECTRIAL ENGINEERING)
-Tuesday, June 6, 1989
Professor Andrzej Jajszczyk, Technical University of
Poznan, Poland, will speak on "Fault Diagnosis of
Digital Switching Networks."
TIME: 3:30 p.m.
ROOM: DC 1304
ABSTRACT
Methods of fault detection and location for separate
digital switching matrices (DSM's) as well as a wide
class of switching networks are proposed. First, it is
assumed that stuck-type faults can affect only a single
component of a network. A model of a switching matrix
is presented and fault equivalences are shown. After
the discussion of a method of single switch diagnosis,
test vectors and connection settings for identification
of a single faulty switch in multistage networks are
proposed. To avoid the masking effects the notions of
an H-test vector and an H-assignment are introduced.
In the proposed approach, tests for space and time
switching are performed separately. Finally, the
analysis is extended to include multiple component
faults.