NEC SV8500 Operation And Maintenance Manual - 1-W: Plo Restore
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CHAPTER 3
System Messages
1-W: PLO Restore
This message displays when a failure such as internal clock down occurred to PLO is restored.
Restoration of PLO fault
Current Status of PLO card
Current Status of PLO card
Default Alarm
Default Grade
Grade Modified
Lamp Modified
NON
3
1:
XXXX
XX00
0000
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
b0
b7
b6
b5
b4
b3
b2
b1
b0
b7
b4
b1
b0
1 2
3
b0:
0/1 = PLO System 0/PLO System 1
1
b0:
0/1 = Clock is in STBY side/ACT side
b1:
0/1 = PLO synchronizing/PLO self running or drifting
b2:
0/1 = -/Input clock down
b3, b4: Route of input clock (see the table below)
b5:
0/1 = -/PLO input all down
b6:
0/1 = -/PLO output down
b7:
0/1 = -/Drifting
b4
b3
CONNECTED WITH PRIMARY
OSCILLATOR (M-OSC)
CONNECTED WITH
EXTERNAL CLOCK
0
0
M-OSC 0
Route 0
0
1
M-OSC 1
Route 1
1
0
–
Route 2
1
1
–
Route 3
2
b0:
0/1 = -/Five millisecond clock down
b1:
0/1 = -/Frame Synchronization from SYNC card is down
b4:
0/1 = -/Internal OSC clock down
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