HD-EO
Rev.
2
12
4
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. LED’s at the front of the sub-rack.
Of these three, the GPI and the LED’s 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 LED’s are
described in Chapters 4.2 and 4.3. The GYDA controller is described in a
separate user manual.
4.1
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 figures below.
Electrical Maximums for GPI outputs
Max current: 100mA
Max voltage: 30V
4.2
GPI connections
4.2.1
Version 2 GPI pinout
Pin # Signal
Name
Mode
1 Status
General error status for
the module.
Open
collector
2
LOS1
Loss of signal 1.
Open
collector
3
LOS2
Loss of signal 2.
Open
collector
4
Laser Fail Laser failure.
Open
collector
5
Not in use.
6
Not in use.
7
Not in use.
8
Ground
0V / GND pin.
0V
Figure 7: HD-EO version 2 GPI pin-out.
