Transient signals
EE 2303
Overview
What is a TRANSIENT Signal ???
 Recap Of OSCILLOSCOPE
 Switches and Terminology
 Review Of Logic gates
 Flip-Flop and Latches

What is a Transient Signal???


Signals which last for a very short period of
time are referred to as “ TRANSIENT
Signals”.
Examples: Switch bounce, Shock wave
generated from an impact test, Seismic Signals..
Run Control Menu



Run/Stop (Green): Instrument
is continuously acquiring data
Run/Stop (Red): Instrument
has stopped Acquiring data
SINGLE : Instrument will wait
for the user defined event
(typically voltage set by the
user)
Trigger Menu
Trigger tells the oscilloscope when to start
acquiring data. Normally edge triggering is done
Triggering modes



Normal mode: Displays a waveform when the
trigger conditions are met. Used for very short
signals (*****)
Auto mode: Displays a waveform when the
trigger conditions are met. Used for all signals
Auto-level mode: can be used only when
EDGE is selected on the front panel
Coupling Modes
 DC
Coupling : Allows both D.C. and
A.C. signal to flow in to the trigger
path.
 AC coupling : Allows A.C only
SWITCHES & LOGIC GATES
Switches and Related Terminology





Pole - number of switch contact sets.
Throw - number of conducting positions, single
or double.
Way - number of conducting positions, three or
more.
Open - off position, contacts not conducting.
Closed - on position, contacts conducting, there
may be several on positions.
Single pole Double Throw Switch
(SPDT-Switch)
SPDT can be “ON” in both positions, switching
on a separate device in each case. It is often
called a “change over switch”.
Basic Logic Gates
Flip-Flops and Latches
Flip-Flop and Latches are sequential
circuits which are built from basic logic
gates.
 Flip-Flop and latches form the
fundamental unit of “memory” in modern
computers.
 Each flip-flop can store 1 bit of
information.

Basic Idea Of the Experiment
View
VOLTAGE
SOURCE
transient
Remove
transien
t
VOLTAGE
SOURCE
Pre-Lab Circuit ???