XIMEA xiC - Optically Isolated Digital Input; Optically Isolated Digital Input - General Info; Digital Input - Signal Levels

xiC - Technical Manual Version 1.16
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3.10.3. Optically isolated Digital Input
3.10.3.1. Optically isolated Digital Input - General info
Item
Parameter / note
Maximal input voltage
24V
Common pole
No
Effect of incorrect input terminal connection
Reverse voltage polarity protected
Effects when withdrawing/inserting input
module under power
No damage, no lost data
Maximum recommended cable length
5m
Input level for logical 0
Voltage < 2.0V/Current 0mA to 0.3mA
Input level for logical 1
Voltage > 4.0V/Current 4mA to 6mA
Input debounce filter
No
Input delay – rising edge
1.7 +/-0.2µs (V
INPUT
=10V, T
AMBIENT
=25°C)
Input delay – falling edge
1
10.7 +/-0.2µs (V
INPUT
=10V, T
AMBIENT
=25°C)
Number of inputs
1
External trigger mapping
Yes
Input functions
Trigger, get current level (rising or falling edge are supported)
table 3-32, Optically isolated digital input, general info
Note: – 1) Propagation delay depends on voltage level, propagation jitter is significantly lower.
3.10.3.2. Digital Input – signal levels
Input levels are not IEC 61131-2, Type 1 as the ON state has been extended to support 5V TTL
V-in-min [V]
V-in-max [V]
State
I-max [mA]
-24.0
2.0
Off (0)
0.0 – 0.3 mA (0mA nominal)
2.0
4.0
Transient
4
4.0
24.0
On (1)
4 – 6 mA (5mA nominal)
table 3-33, digital info, signal levels
Note:
• Input level Vin represents amplitude of the input signal.
• Voltage levels referenced to common ground GND