Dataprobe T-APS Rack - Manual (Page 3)

LED Indicators
MASTER CONTROL UNIT - MCU Card
+5V: Power On.
Run: Blinking - MCU operating properly.
ALM: On - Line Card failure.
LNK: On -Network Link connected.
DUP: On - Full Duplex, Off - Half Duplex.
10M: 10Mb network speed.
100M: 100Mb network speed.
COL: Network Collision.
Fail:
MCU card failure.
T1/E1 Interface Line Card - (INF)
RUN LED: While running properly, the RUN display light should be blinking.
1+1/1:1 LED : The LED will be on when the units are set in the 1:1mode. The 1:1 LED is off when the
units are set in the 1+1 mode. While the LOOK IN function setting is ON, the 1:1 LED will be blinking when
the CPE side had a fault.
E1 LED: It will be on in the E1 setting.
T1 LED: It will be on in the T1 setting.
L1 LED: It will be on if L1 is on active path.
L2 LED: It will be on if L2 is on active path.
Blinking events:
First setting the L1 as the active and L2 as protection path, the L1 light will be on and L2 light will be off. In
the event of automatic switch to L2, the L2 light will flash quickly before L1 light turns off. The L2 light will
then be on and L1 light off if switching succeeds.
In the event of fault from CPE side in L1 active and L2 protection path setting, the LOOK IN Function will
apply (see Setup, Selection B LOOK IN ). Setting the LOOK IN Function On will indicate the CPE side
fault by showing L1 light on and 1:1 LED light blinking.
In the event of L2 protection path fault, the fault is also indicated as L1 light on and L2 light blinking. The
fault from CPE failure or L2 fault can be easily distinguished by MEASURE ERROR RATIO function.
LOS LED: Loss Of Signal light will be on if the connection is lost of signals.
OOF LED: Out of Frame light will be on if the connection is out of frame.
AIS LED: Alarm Indication Signal light will be on when alarm signal received.
RAI LED: Remote Alarm Indication light will be on when remote unit fault received
Fail LED: Failure Light will be on if a system fault or a circuit failure occurs.