Nevion LB-EO Rev.F - Manual (Page 11)

LB-EO Rev. F
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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. 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 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
connector is shown in figure below.
LB-EO module GPI pinning:
Figure 4: GPI output.
Signal Name Pin # Mode
Status General error status for the module Pin 1 Open Collector
LOS Loss of Signal (open = signal detected) Pin 2 Open Collector
LEVEL Level too high (open = level ok) Pin 3 Open Collector
H/L High/low band (ground for 22kHz tone enable/high
band) Pin 4 CMOS Input
H/V Horizontal/vertical polarization (ground for vertical
polarisation) Pin 5 CMOS Input
DATA Data output Pin 6 Open Collector
Ground 0 volt pin Pin 8 0V.
Electrical Maximums for GPI outputs
Max current: 100 mA
Max voltage: 30 V