Nevion EDFA-B-C 17dBm - Manual (Page 9)

EDFA-B-C 17dBm Rev. B
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4.3 GPI
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 7.
There are two GPI inputs, one for muting output power (power goes to below safe limit) and
one for complete disable (same function as key switch, lid and software disable command).
Electrical Maximums for GPI outputs
Max current: 100mA
Max voltage: 30V
EDFA-B-C 17dBm module GPI pinning:
Figure 3: GPI Outlet
Signal Name Pin # Mode Direction
STATUS Pin 1 Open Collector Output
LOS Loss of input signal/power Pin 2 Open Collector Output
LOP Loss of output
signal/power Pin 3 Open Collector Output
TERM Temperature out of range Pin 4 Open Collector Output
LASER Laser bias current out of
range Pin 5 Open Collector Output
DIS DISABLE (completely shut
off bias current to the
laser). Pin 6 TTL, 0V =
active level Input
MUTE MUTE (output power goes
below class 1 limits). Pin 7 TTL, 0V =
active level Input
Ground 0 volt pin Pin 8 0V.