CRYSTAL CONSOLE GUIDE
7
5.3 Status LEDs
OPCON is provided with certain LEDs that show the current
status of the system. These are as follows :
S. No. STATUS OF LED MEANING
1. ON Power indication
2. ACT ON when OPR is present.
OFF when OPR is absent
3. NT ON when system is in night mode.
OFF when system is in day mode
4. BUF ON when buffer is full
OFF when buffer is not full
5. PGM ON when system prog. mode is active
6. USR ON when system user mode is active
7. FN 1 Not used
8. FN 2 Not used
9. FUN ON when FUN key is pressed to perform a
system function
10. SHIFT OFF when lower group of extns and junction
is selected
ON when higher group of extns are selected
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