Loopback Testing; Front-Panel Alarm Messages - ADC HiGain H2TU-C-319 List 6 Quick Installation

L
OOPBACK
Initiate loopback testing from the maintenance menus or use the MODE and SEL
pushbuttons. The inband codes shown below can be sent by a test set.
Loopback Inband Code
NLOC 1111000
NREM 1110000
SMJK 11000
CREM 1111110
CLOC 1111100
Loopdown 11100
For more detailed information, refer to the technical practice,
document number LTPH-TP-1054-xx. It can be downloaded from the
ADC web site at www.adc.com.
Message
(b)
PWR FEED SHRT
(b)
PWR FEED GND
(b)
PWR FEED OPEN
SPNn-LOSW
LLOS
RLOS
(c)
LAIS
(c)
RAIS
(c)
LRAI
(c)
RRAI
xxx-LOF
(c)
xxx-DBER
(c)
PRMF
(c)
PRMN
xxx-HBER
xxx-MAL
xxx-LA
(a) Front-panel alarm messages are listed in order of priority.
Pressing the SEL pushbutton initiates an Alarm Cutoff (ACO) message.
(b) Message displays repeatedly as long as the alarm condition exists, and is not included in the priority order.
(c) Does not activate the system alarm on pin H.
To comply with the intrabuilding wiring requirements of GR-1089
CORE, Section 4.5.9, the shields of the ABAM-type cables that
connect the H2TU-C-319 List 6 DSX-1 output ports to the
cross-connect panel must be grounded at both ends.
T
ESTING
H2TU-C
1111110
NLOC CREM
1111000
Network
GNLB Loopback Commands
Description
DSX-1 signal is looped back to the network at the H2TU-C.
DSX-1 signal is looped back to the network at the H2TU-R.
DSX-1 signal is looped back to the network at the H2TU-R
SmartJack module.
DS1 signal from customer is looped back to the customer at the
H2TU-C.
DS1 signal from customer is looped back to the customer at the
H2TU-R.
Deactivates any of the above loopbacks.

Front-Panel Alarm Messages

Description
A short between the Tip and Ring of the HDSL2 pair.
The HDSL2 loop is grounded.
A line power open condition.
The HDSL2 loop has lost sync. The span closest to the network has highest priority.
No signal is detected at the DSX-1 input to the H2TU-C.
No signal is detected at the DS1 input to the H2TU-R.
Line Alarm Indication Signal.
Remote Alarm Indication Signal.
An RAI alarm (yellow LED) from the CPE with an error-free signal from the line unit
or network.
Indicates an RAI alarm (yellow LED) from the CPE with errors from the line unit or
network.
The DS1 input does not contain the ESF or SF frame pattern setting of the FRMG option.
(xxx denotes either TUC or TUR.)
A system DS1 Bit Error Rate (BER) alarm. (xxx denotes either TUC or TUR.)
H2TU-R Performance Report Messaging BER threshold exceeded at far end.
H2TU-R Performance Report Messaging BER threshold exceeded at near end.
A system HDSL2 Block Error Rate (BER) alarm. (xxx denotes either TUC or TUR.)
The margin on the HDSL2 loop has dropped below the threshold setting. (xxx denotes
either TUC or TUR.)
The attenuation on the HDSL2 loop has exceeded the maximum threshold value.
(xxx denotes either TUC or TUR.)
H2TU-R
TLOS
NREM
CLOC
1111100
1110000
11000
SMJK
Customer
Premises
(a)
ALRM
displays prior to any alarm message.