Comtech EF Data DT-4500 Series Installation And Operation Manual page 191

DT-4500 Series C- and Ku-Band Down Converters MN/DT4500.IOM
Appendix A Revision 2
Figure A-11 shows the front panel displays after power has been turned off on
Converter #01. Note the ON LINE LED is lit on the BU. This indicates that the BU
is now providing the frequency translation in place of the faulted unit. Converter
#01 will not come back online until power is restored.
Figure A-11. Front Panel Example – Down Converter #01 Backup
A–11