Measuring Functions; Definitions Of The Measuring Signals; Fig. 5-3 Active And Inactive State - ETAS ES930.1 User Manual

ETAS
5.2

Measuring Functions

5.2.1

Definitions of the measuring Signals

This section defines signals that are used for the description of the measuring
functions of the digital inputs of the ES930.1.
5.2.1.1 Legend
Tab. 5-1 on page 34 summarizes the symbols used in the figures of the chapter
on "Measuring Functions".
Symbol
Tab. 5-1
5.2.1.2 Status
The term "state" describes the level of a signal to a sampling time. The state of
an input signal is either active or inactive. The active state is represented by the
value 1 or HIGH, the inactive state by the value 0 or LOW.
Input
Signal
Act ive
Inactive
Fig. 5-3
5.2.1.3 Pulse
The term "pulse" describes the time characteristic of a signal change from one
state to the other and back to the original state.
A pulse is framed exactly by one inactive-active and one active-inactive edge.
The two edges follow in succession.
The pulse of an input signal is either active or inactive. An active pulse starts
with an inactive-active edge, an inactive pulse starts with an active-inactive
edge.
ES930.1 - User Guide
Meaning
Time stamp for preceding samplings (fixed grid)
Current time stamp (fixed grid)
Resulting scan value
Symbols used
Active and inactive State
Digital Input Channels ("DI" Connection)
Time
34