MR-TR-3G-D
Rev.
0
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.
MR-TR-3G 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
LOS opt
Los of optical input signal
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 9: GPI output.
Electrical Maximums for GPI outputs
Max current: 100mA
Max voltage: 30V
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