Nevion 3GHD-EO-D15xx - Manual (Page 10)

3GHD-EO-D15xx Rev. 2
nevion.com | 10
5 Module status
The status of the module can be monitored in three ways.
1. GYDA System Controller (optional).
2. GPI at the rear of the sub-rack.
3. LEDs at the front of the sub-rack.
Of these three, the GPI and the LEDs are mounted on the module itself, whereas the GYDA
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
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
input laser disable will turn off the laser if this input is shortening to ground/chassis. The GPI
connector is shown in figure below.
3GHD-EO-D15xx.xx module GPI pinning:
Signal Name Pin # Mode
Status General error status for the module Pin 1 Open Collector
Laser Fail Laser Fail Alarm Pin 2 Open Collector
Not used Pin 3 Open Collector
LOS el Los of electrical input signal Pin 4 Open Collector
Laser disable Turn off laser Pin 5 Input
Ground 0 volt pin Pin 8 0V.
Figure 4: GPI output.
Electrical Maximums for GPI outputs
Max current: 100mA
Max voltage: 30V