L3 Technologies AFIRS228S Manual Do Utilizador
AFIRS 228S Iridium Global Communications System Installation Manual
16 July 2014
L-3 Aviation Recorders Proprietary
Page 26
165E5733-00 Rev. 03
3.5.7.1 Configurable Inputs
Each configurable discrete input is individually software-configurable for the following:
•
Signal Level: Open-Ground (Negative-Seeking) or Open-28V (Positive-Seeking)
•
Logic Assignment: Active Low or Active High
•
Function: Selected from list
Refer to Section 6.9 for additional information on use of configurable inputs.
3.5.8 Discrete Outputs
Each discrete output transitions between an “Open Circuit” (high-impedance-to-ground) and a “Closed
Circuit” (low-impedance-to-ground) state to indicate a change in output logic.
Circuit” (low-impedance-to-ground) state to indicate a change in output logic.
Quantity
8 Configurable
“Open Circuit” Impedance
>100 kΩ
“Open Circuit” Voltage (Max)
36 VDC
“Closed Circuit” Current Limit (Min)
500 mA
Voltage Across “Closed Circuit”
<1.25 V
3.5.8.1 Configurable Outputs
The discrete outputs use “Open-Closed” signal levels, where the output is either high-impedance to
ground (Open) or low-impedance to ground (Closed). Each configurable discrete output is individually
software-configurable for the following:
ground (Open) or low-impedance to ground (Closed). Each configurable discrete output is individually
software-configurable for the following:
•
Logic Assignment: Active Low (Closed) or Active High (Open)
•
Function: Selected from list.
Refer to Section 6.10 for additional information on use of configurable outputs.