EDFA optical amplifier – user manual
53
AS
{cr}
EDFA Module Status Request
Reports any problems with the EDFA module:
Reply is:
STATUS:{sp}ADI{sp}OPMI{sp}PTMP{sp}PI{cr}
GA
{sp}[1,2]{cr} Reports Amplifier Gain in dB for each stage
(ASEcorrected)
Example usage:
GA{sp}1{cr}
Reply is:
GAIN STAGE 1:{sp}18{sp}dB{cr}
The amplifier gain stage 1 is 18 dB.
In AGC OADM mode, GA 1 value should the same as AGC 1 set value, and
GA 2 value should the same as AGC 2 set value.
Indicator Parameters
Description
STAGE 1 IN LOS
STAGE 2 IN LOS
Loss of input signal alarm
stage 1 and stage 2
The loss of input power will send an
alarm on the RS232 port when
sending alarm status command and on
the electric connector (TTL signal).
The value of the input power alarm
threshold is settable and may be
disabled.
STAGE 1 OUT LOS
STAGE 2 OUT LOS
Loss of output signal alarm
stage 1 and stage 2
The loss of output power will send an
alarm on the RS232 port (when
sending alarm status command), and
on the electric connector (TTL signal).
This feature may announce a possible
EDFA problem. The value of the loss
of output power alarm threshold is
settable and may be disabled.
TINT
Internal Temperature Alarm
TINT indicates that the EDFAs internal
case temperature is out of limits.
PTMP
Pump temperature alarm
This feature sends an alarm if one or
several laser diode exceed the set
value by 2° C.
PUMP BIAS
Pump bias current alarm
This feature sends an alarm if one or
several laser diode currents exceed 95
% of end of life current.
ADI
Disable Alarm
ADI indicates that the disable electrical
input pin is active. In DI state, the laser
diode power supply is turned off by a
transistor. The TEC power supply stay
turned on.
OPMI
Eye-safe Power Control Input
(mute)
When active, the output power for
each stage is set to mute power (ALS
values)