Physical Description - Nortel Circuit Card Installation Manual

Page 722 of 906

Physical description

Table 234
NTAK10 LED states (Part 1 of 2)
LED State
DIS On (Red)
Off
OOS On (Yellow)
Off
NEA On (Yellow)
Off
FEA On (Yellow)
Off
LBK On (Yellow)
Off
CC On (Red)
On (Green)
553-3001-211 Standard 3.00
NTAK10 2.0 Mb DTI card
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.
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.
• 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.
Definition
The NTAK10 circuit card is disabled.
The NTAK10 is not in a disabled state.
The NTAK10 is in an out-of-service state.
The NTAK10 is not in an out-of-service state.
A near end alarm state has been detected.
No near end alarm.
A far end alarm state has been detected.
No far end alarm.
NTAK10 is in loop-back mode.
NTAK10 is not in loop-back mode.
The clock controller is switched on and disabled.
The clock controller is switched on and is either locked to a
reference or is in free-run mode.
August 2005