ADC HiGain H2TU-C-388 List 1E User Manual page 14

Front Panel
Table 2 lists the front-panel display messages. The four-character display reports the code of an alarm, loopback,
or diagnostic message and, in some cases, is followed by a second four-character message that modifies the first
message with a value or current configuration setting.
Message Full Name
ALARM MESSAGES
ACO Alarm CutOff
ALRM Alarm Condition Exists
DBER DS1 Bit Error Rate
HBER HDSL2 Block Error Rate
LA Loop Attenuation
LAIS Local Alarm Indication Signal
LLOS Local Loss of Signal
LOSW Loss of Sync Word
LRAI Line Remote Alarm Indication Signal
MAL Margin Alarm
PRMF Performance Report Messaging - Far
End
PRMN Performance Report Messaging - Near
End
PWR FEED GND Ground
PWR FEED OPEN Open
PWR FEED SHORT Short
RAIS Remote Alarm Indication Signal
RLOS Remote Loss of Signal
RRAI Remote RAI
TRCI TX RAI-CI Indication - Customer
Installation
TUC Transmission Unit Central Office
TUR Transmission Unit Remote End
LOOPBACK MESSAGES
CLOC Customer Local Loopback
CREM Customer Remote Loopback
NLOC Network Local Loopback
6
Table 2. Front-panel Display Messages
Description
A system alarm has occurred and has been retired to an ACO
condition once the SEL button on the H2TU-C front panel is pressed.
A system alarm condition is in effect.
A system DS1 BER alarm is in effect and remains in effect until cleared.
A system HDSL2 Block Error Rate alarm is in effect.
Indicates that the attenuation on the HDSL2 loop has exceeded the
maximum threshold value.
Indicates an AIS (all ones) pattern is being transmitted from the
local DS1 output port.
Indicates that no signal is detected at the DSX-1 input to the
H2TU-C. Causes a system alarm.
Indicates that the HDSL2 loop has lost synchronization.
Indicates an RAI alarm (yellow) from the CPE with an error-free
signal from the line unit or network.
The margin on HDSL2 loop has dropped below the threshold
(0 to 15 dB) as set by the operator.
H2TU-R PRM-FE BER threshold has been exceeded.
H2TU-R PRM-NE BER threshold has been exceeded.
The HDSL2 loop is grounded.
Indicates a line power open condition.
Indicates a short between the Tip and Ring of the HDSL2 pair.
Indicates an AIS (all ones) pattern is being received at the H2TU-R
DS1 input port.
Indicates that no signal is detected at the DS1 input to the H2TU-R.
Causes a system alarm.
Remote Alarm Indication at the H2TU-R - Indicates an RAI alarm
(yellow) from the CPE with errors from the line unit or network.
Upon reception of an RAI (yellow alarm) from the CPE, the H2TU-R
sends RAI-CI toward the network, if the network signal received at the
H2TU-R is clear.
If the network signal is impaired (LOS, AIS or Loss of Frame [LOF]),
then the RAI is automatically passed to the network.
Accompanies the HBER, MAL, and LA alarms and indicates that the
alarm has occurred at the H2TU-C central office unit.
Accompanies the HBER, MAL, and LA alarms and indicates that the
alarm has occurred at the H2TU-R remote unit.
Signal from customer is looped back to the customer at the H2TU-R.
Signal from customer is looped back to the customer at the H2TU-C.
DSX-1 signal is looped back to the network at the H2TU-C.
April 21, 2000
152-388-115-03, Issue 03
Continued
H2TU-C-388 List 1E