Nevion DA-VA - Manual (Page 8)

DA-VA Rev. H
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4
Operation
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 are described in sections 5.1 and 5.2.
The GYDA controller is described in a separate user manual.
4.1 GPI ALARM
– Module Status Outputs
Only available when using the standard –C1 backplane
These outputs can be used for wiring up alarms for third party control systems. The
GPI outputs are open collector output, sinking to ground when an alarm is triggered.
The GPI connector is shown in figure 4.
Electrical Maximums for GPI outputs
Max current: 100mA
Max voltage: 30V
Figure 4: GPI pin out
DA-VA module GPI pinning:
Signal Name Pin # Mode
Status General error status for the module. Pin 1 Open Collector
Signal Signal detected (HW revision 3 only) Pin 2 Open collector
Ground 0 volt pin Pin 8 0V.
4.2 Front Panel - Status Monitoring and Signal Detection
The status of the module can be monitored visually at the front of the front of the
module.
The DA-VA has one LED showing the status. The hardware revision 2 of the DA-VA
has also a built in detector for signal monitoring. When signal is present, LED is green,
otherwise it will be red. The LEDs are described in the following table:
Diode \ state Red LED Yellow LED Green LED No light
Status Module is faulty
Module is OK
Module power is OK Module has no
power
Signal No signal detected Signal present Module has no
power