User's Manual
SBS-900 Shore Based Radar Systems
Chapter 10: Corrective maintenance
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 200 of 240
KDCm
LED
Number
Function
LED1
"CHANNEL UP" or "DATA VALID CH1". On the NTX-A462-1 fitted in bays A1 and
B1this is "CHANNEL UP" which indicates the presence of data input from the LAN. On
the NTX-A462-3 fitted in bay A2 this is "DATA VALID CH1" which indicates the
presence of valid data input from module A1 via the SATA link.
LED2 "DATA VALID" This red LED indicates presence of decoded zero range trigger pulse.
LED3
"RUNNING" This red LED indicates FPGA is loaded and running and should normally
be flashing.
LED4 This red LED is not used.
LED5
"FPGA NOT LOADED" This Red LED indicates FPGA has failed to load and should
normally be unlit.
LED6
"FLASH MEMORY CHECKSUM ERROR" This Red LED indicates a checksum error in
flash memory and should usually be unlit.
LED7
"SFP TX FAULT" This Red LED indicates failure of SFP TX module or that the module
is not fitted. This LED should be lit on NTX-A462-1 fitted in bays A1 and B1 and unlit on
NTX-A462-3 fitted in bay A2.
LED8
"POWER SUPPLIES OK" This Green LED illuminates when the power monitor IC36
detects the power rails are within limits. The +5 V, +3.5 V, +1.8 V, AVTTRX, AVTTTX,
AVCC and AVCCPLL voltage rails are monitored. This LED should normally be on.
LED9
"SFP LOSS" This Red LED indicates a Loss Of Signal (carrier) such as when the
media is disconnected or broken, or when the signal level is below an acceptable level.
It is also illuminated in the absence of an SFP due to pull-up R164. This LED should
normally be off.