Module Status; Gpi Alarm - Module Status Outputs - Network Electronics Flashlink SDI-EO-2 User Manual

SDI-EO-2 /SDI-EO-2-RC

5 Module status

The status of the module can be monitored in three ways.
1. GYDA-SC System Controller (optional)
2. GPI at the rear of the frame
3. LEDs at the front of the frame
Of these three, the GPI and the LEDs are mounted on the module itself,
whereas the GYDA-SC System Controller is a separate module giving detailed
information on the card status. The functions of the GPI and the LEDs are
described in sections 5.1 and 5.2. The GYDA-SC System Controller is
described in a separate user manual.
5.1 GPI Alarm – Module status outputs
These outputs can be used for wiring up alarms for third party control
systems. The GPI outputs are open collector outputs, sinking to ground when
an alarm is triggered. The GPI connector is shown in figure below.
SDI-EO-2 module GPI pinning:
Signal Name
Status General error status for the module
LOS1 Loss of Signal 1
LOS2 Loss of Signal 2
Laser fail Laser fail
Ground 0 volt pin
Electrical Maximums for GPI outputs
Max current: 100mA
Max voltage: 30V
Pin # Mode
Pin 1 Open Collector
Pin 2 Open Collector
Pin 3 Open Collector
Pin 4 Open Collector
Pin 8 0V
Figure 4: GPI output.
Rev. 2
11