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W i n d o w s
P C
S o f t w a r e
PAG E 3 8
E T I
D e c o d e r
7.8
Displaying of the 2-Mbit/s Status
If the system is configured in the right way and the 2-Mbit is connected all
LEDs of the 2-Mbit/s status lights green. The LED local N-Alarm must be lights
green at latest after 4 minutes.
FIG. 23
All LEDs can be lights in three different colors:
green
red
blue
The LEDs have the following meaning:
SIGNAL
This LED signals an error, if there is no HDB3 coded signal on the 2-Mbit line.
SYNChronisation
This LED signals an error, if there is no framing (G.704) on the 2-Mbit signal.
Alarm Indication Signal
This LED signals an error, if there were 2 or less '0' in the last two frames of
the 2-Mbit/s signal.
LOCAL Nondeferred-ALARM
This LED signals an error, if the local bit error rate is higher than 10e-06. This
means there was one bit error in 4 minutes. After power on this alarm occurs
normally for 4 minutes.
LOCAL Deferred-ALARM
This LED signals an error, if the local bit error rate is higher than 10e-03. A
decoding of the signal is in this case not possible.
2-MBIT STATUS
no error
error
error was occured
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