Siemens SWT 3000 Equipment Manual page 182

Diagnostics and Error Handling
4.1 Control and Signaling Elements
Table 4-5
LED
H1 red
H2 red
H3 red
H4 yellow
H5 yellow
H6 yellow
H7 yellow
H8 yellow
H9 yellow
182
Signification of the Alarm LED on the FOM
LED Indication when Lighted
FPGA not ready
Tx-Alarm
F6 supervisory alarm
Rx-Alarm
ILAN high
BUF alarm
Buffer overflow or under run
Source: Supervisory circuit of FPGA
MOD-alarm
Modulation alarm, carrier frequency at the
optical receiver not detected
COM-alarm
Communication alarm at the electrical
interface
SFP_LOS
The received optical power is below the
receiver sensitivity
Loss of signal
S6 asserted
LED Indication with FOS3 for C37.94
FPGA not ready
Tx-Alarm
F6 supervisory alarm
Rx-Alarm
LOS alarm ("lose of signal" alarm)
LED on: DCE and DTE not synchronized or
when in sync state, there are at least two
bit errors in consecutive 8 C37.94 frames
AIS alarm ("Alarm Indication Signal" alarm)
LED on: "all ones" received. The multiplexer
lost the higher order link, it will send all
one in the data bits to SWT3000.
RDI alarm ("remote defect indicator" alarm)
LED on: remote side of C37.94 connection
entered a LOS alarm state.
Debug information (for test purpose)
Debug information (for test purpose)
Debug information (for test purpose)
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
C53000-G6040-C605-1, Edition 03.2020