XIMEA xiC, Техническое руководство

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xiC - Technical Manual Version 1.16 56
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