ADC Telecommunications Inc. DLC1904B Benutzerhandbuch
ADCP-75-126 • Issue B • April 2002 • Section 5: Maintenance
Page 5-3
©
2002, ADC Telecommunications, Inc.
Table 5-1. Host Unit LED Indicators
INDICATOR
COLOR
DESCRIPTION
POWER
Green
Off
Off
Indicates
if the HU is powered or un-powered.
The
DC power source is on.
The
DC power source is off.
STANDBY
Green
(blinking)
Yellow
(blinking)
Red
(blinking)
Off
Indicates
if the HU is in the standby, normal, test, or pro-
gram
load mode.
The
HU is in the standby mode.
The
HU is in the program load mode.
The
HU is in the test mode.
The
HU is in the normal mode.
HOST
UNIT
Green
Yellow
Red
Yellow
Red
Indicates
if the HU is normal, overheated, or faulty.
The
HU is normal.
High
temperature detected in HU.
Internal
fault detected in the HU or HU/RU band mismatch.
REMOTE
UNIT
Green
Yellow
Red
Yellow
Red
Indicates
if an alarm is detected at the RU.
No
alarms detected at the RU.
A
minor alarm is detected at the RU.
A
major alarm is detected at the RU.
DRIVE
Green
Yellow
Red
Yellow
Red
Indicates
if the forward path RF signal level is normal,
above
overdrive threshold, or below underdrive threshold.
The
RF signal level is normal
The
RF signal level is below the underdrive threshold.
The
RF signal level is above the overdrive threshold.
PORT
1/PORT 2
Green
Red
Red
Indicates
if the reverse path optical signal received from
the
RU is normal, if no signal is detected, or if errors are
detected.
The
The
reverse path optical signal is normal.
No
reverse path optical signal is received, excessive errors are
detected,
or HU can’t communicate with the STM.
PORT
3
(diversity
units
only)
Green
Yellow
Yellow
Indicates
if the diversity reverse path optical signal
received
from the RU is normal, if no signal is detected, or
if
errors are detected.
The
diversity reverse path optical signal is normal.
No
diversity reverse path optical signal is received or exces-
sive
errors are detected.