7-V

SYSTEM MESSAGES

PLO MB Key Turn OFF

Default Alarm:

Default Grade:

Grade Modified:

Lamp Modified:

NON

3

 

 

 

 

 

 

This message displays when the MB switch on the PLO card is turned off while extracting or inserting a circuit card.

1: XXXX XX00 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000

➁ ➂

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

Faulty PLO card No.

b7

b0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status of PLO card at the time of failure detection (Scan Data 1)

b7

b6

b5

b4

b3

b2

b1

b0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status of PLO card at the time of failure detection (Scan Data 2)

b7

b4

 

 

b1

b0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b0: 0/1 = PLO No. 0 system/PLO No. 1 system

b0:

0/1 = Clock STBY/ACT

 

b1:

0/1 = PLO Synchronizing/PLO self-running or drifting

b2:

0/1 = -/Input clock down

 

b3, b4: Route of Input clock (see table)

 

b5:

0/1 = -/PLO input all down

 

 

 

 

 

b4

b3

Connected With Primary

Connected With

Oscillator (M-OSC)

External Clock

 

 

 

 

 

 

 

0

0

 

NO. 0 M-OSC

Route 0

 

 

 

 

 

0

1

 

NO. 1 M-OSC

Route 1

 

 

 

 

 

1

0

 

-

Route 2

 

 

 

 

 

1

1

 

-

Route 3

 

 

 

 

b6:

0/1 = -/PLO output down

 

b7:

0/1 = -/Drifting

 

b0:

0/1 = -/n

5msec clock down

 

b1:

0/1 = -/Frame Synchronization down from SYNC card

b4:

0/1 = -/Internal OSC clock down

 

NDA-24300CHAPTER 3

Page 157

Issue 1

Page 184
Image 184
NEC NDA-24300 manual PLO MB Key Turn OFF