Basler ace acA1920-155, User Manual, Page: 81 / 326

AW00123404000 Physical Interface
Basler ace USB 3.0 71
Fig. 41: Analog External Signal and Associated Internal Line Status with Propagation Delays for Opto-isolated Input
and Direct-coupled GPIO Inputs (Line Inverters Disabled)
*
*
t
PLH
t
PHL
t
PLH
t
PHL
V
o
lt
age [VDC]
0
#
1
Time
0
1
0
LOW
HIGH
Drawing not to scale
Interna
l Line
S
tatus
In
te
rn
al
Li
n
e
S
ta
tus
= Propagation delay for the low-high line status change
= Voltage region considered to indicate a "high" internal logical level
= Voltage region considered to indicate a "low" internal logical level
= Transition threshold
= Propagation delay for the high-low line status change
t
PLH
t
PHL
HIGH
LOW
= "Fast" edge
= Internal line status (logical levels)
= Analog external signal
Direct-coupled GPIO IN
Opto-isolated IN
#: 3.3 - 24 VDC for opto-isolated input, >2.0 - 5.0 VDC for direct-coupled GPIO IN