Owner's manual

780 NTAK10 2.0 Mb DTI card
Table 330
NTAK10 LED states (cont’d.)
LED
State
Definition
On (Green) The clock controller is switched on and is either locked to a
reference or is in free-run mode
Flashing (Green) The clock controller is switched on and locking onto the primary
reference
Off
The clock controller is switched off
Note: See “Clock controller interface” (page 793) in this chapter for
more on tracking and free-run operation.
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 go into appropriate states,
as shown in Table 331 "NTAK10 LED states" (page 780).
Table 331
NTAK10 LED states
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.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.