Nortel Networks Circuit Card Manual Do Utilizador
Page 722 of 906
NTAK10 2.0 Mb DTI card
Physical description
The 2 Mb DTI pack uses a standard 9.5" by 12.5", multi-layer printed circuit
board. The faceplate is 7/8” wide and contains six LEDs.
board. The faceplate is 7/8” wide and contains six LEDs.
The LEDs operate as follows:
•
After the card is plugged in, the LEDs (a-e) are turned on by the
power-up circuit. The clock controller LED is independently controlled
by its own microprocessor.
power-up circuit. The clock controller LED is independently controlled
by its own microprocessor.
•
After initialization, the LEDs (a-e) flash three times (0.5 seconds on,
0.5 seconds off) and then individual LEDs will go into appropriate states,
as shown in Table 234.
0.5 seconds off) and then individual LEDs will go into appropriate states,
as shown in Table 234.
Table 234
NTAK10 LED states (Part 1 of 2)
NTAK10 LED states (Part 1 of 2)
LED
State
Definition
DIS
On (Red)
The NTAK10 circuit card is disabled.
Off
The NTAK10 is not in a disabled state.
OOS
On (Yellow)
The NTAK10 is in an out-of-service state.
Off
The NTAK10 is not in an out-of-service state.
NEA
On (Yellow)
A near end alarm state has been detected.
Off
No near end alarm.
FEA
On (Yellow)
A far end alarm state has been detected.
Off
No far end alarm.
LBK
On (Yellow)
NTAK10 is in loop-back mode.
Off
NTAK10 is not in loop-back mode.
CC
On (Red)
The clock controller is switched on and disabled.
On (Green)
The clock controller is switched on and is either locked to a
reference or is in free-run mode.
reference or is in free-run mode.