Status Leds - ADC HiGain HRU-402 Manual

LTPH-TP-1024-02, Issue 2
S LED
TATUS
Table 2 describes the functions of the Status LEDs on the front panel.
LED Status
Alarm (ALM) LED
Solid red Indicates a LOS condition at HRU T1 input.
Blinking Indicates a LOS condition at HLU T1 input.
HDSL LEDs
Solid green Indicates HDSL loop is in sync.
Blinking 1 time
per second
Blinking 4 times
per second
Blinking 10 times
per second
OFF Indicates no activity on the HDSL loop.
DS1 Framing (FRM)
LEDs (ESF and SF)
ESF LED = Solid
green
SF LED = Solid
green
OFF Indicates unframed or no signal.
DS1 Line Code LEDs
(B8ZS and AMI)
B8ZS = Solid green DS1 Code Option = B8ZS: Indicates that the DS1 line code option
AMI = Solid green DS1 Code Option = AMI: Indicates that the user DS1 line code
HRU-402 List 4
S
Table 2. Status LED Descriptions
Indicates
Shows alarm states for remote and local Loss of Signal (LOS).
Displays HDSL Loop 1 (LP1) and Loop 2 (LP2) conditions.
Indicates the HDSL loop is trying to acquire sync.
Indicates a margin alarm condition on the HDSL loop.
Indicates a Cycle Redundancy Check (CRC) error on the HDSL
loop.
Indications for framing patterns.
Indicates Extended SuperFrame (ESF). The LED blinks one time
per second when a frame error is indicated.
Indicates SuperFrame (SF). The LED blinks two times per second
when a frame error is indicated.
Line code is a user-selectable system setting. The DS1 Line Code
LED reports status based on the line code setting.
is set to Binary 8 Zeroes Suppression (B8ZS). The LED blinks one
time per second when a string of successive zeros is detected.
DS1 Code Option = AUTO: Indicates the DS1 line code is being
(b)
detected as B8ZS.
option is set to Alternate Mark Inversion (AMI). The solid green
LED does not indicate the actual DS1 line code being received,
which may be AMI or B8ZS. This LED blinks one time per second
when a Bipolar Violation (BPV) is detected.
January 3, 2001
(a)
(a)
Overview
Continued
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