NEC SV8500 Operation And Maintenance Manual - page 467
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CHAPTER 3
System Messages
23-Q: DCH Back-Up Manual Change Start/End
This message displays when the Primary Dch fails, and the Dch Back-Up function is operated manually.
Condition of Dch
Location of Dch (Primary)
Location of Dch (Back-up)
Default Alarm
Default Grade
Grade Modified
Lamp Modified
NON
1
1:
XXXX
XXXX
XXXX
0000
2:
0000
0000
0000
0000
3:
0000
0000
0000
0000
4:
0000
0000
0000
0000
5:
0000
0000
0000
0000
6:
0000
0000
0000
0000
7:
0000
0000
0000
0000
8:
0000
0000
0000
0000
9:
0000
0000
0000
0000
b7
b6
b5
b4
b3
b2
b1
b0
b7
b6
b5
b4
b3
b2
b1
b0
b7
b6
b5
b4
b3
b2
b1
b0
1 2
3 4
5 6
b0-b7:
1 = Back-up Start
2 = Back-up End
3 = Back-up Failed
1
b0-b4: Group number
b5, b6: Unit (0-3)
b7:
0/1 = Even-numbered MG/Odd-numbered MG
2
b0-b4: Group number
b5, b6: Unit (0-3)
b7:
0/1 = Even-numbered MG/Odd-numbered MG
3