Comtech EF Data SFC1800A - Manual (Page 28)

User Interfaces SFC1800A Synthesized Frequency Upconverter
4-4 TM111 - Rev. 1.0
STANDBY Green When illuminated, indicates that the converter has been taken
offline and backed up by the Backup (Converter Prime
Converter in a 1:1 or 1:N Switch Only).
LO FAULT Red If the Synthesized LO or IFLO System of the converter
indicates an out-of-lock condition, the LO Fault LED will
illuminate. At this time, the Summary Fault Relay Contacts
will latch. If the LO Fault was due to an Intermittent Fault
Condition, the LO Fault will flash at one-second intervals, and
fault checked may be reset.
SIG FAULT Yellow Signal Faults are used in switch configuration to indicate
switch status (when in the Backup Mode).
EXT REF Yellow This LED illuminates when an external 10 MHz reference
signal has been applied to the converter. A LO fault may
occur when the external reference is applied or removed.
This indicates that a change in the reference has occurred.
This fault can be cleared with a soft reset.
4.2 Front Panel Control Screen Menus
The complete set of SFC1800A Upconverter Front Panel Control Screens are contained within
the following Main Menus:
4.2.1 Main Menus
Converter Menu Options and Parameters
Switch Menu Options and Parameters
Monitor Menu Options and Parameters
Alarms Menu Options and Parameters
System Menu Options and Parameters
Test Menu Options and Parameters