Loopback Testing - ADC HiGain H2TU-C-388 List 7A2 Quick Installation

(a)
Message Description
A=xx The highest loop attenuation (loss of signal power) measured in dB.
ACQ The H2TU-C and H2TU-R are trying to establish synchronization.
ARM The H2TU-C is armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT? The H2TU-C is not receiving a response from the H2TU-R.
BAD RGND The H2TU-R does not have a frame ground connection.
FERR A framing bit error has occurred at H2TU-C DSX-1 input.
HES H2TU-C HDSL2 loop cyclical redundancy check (CRC) error.
LBPV A local bipolar violation has been received at the DSX-1 input to the H2TU-C.
M=xx The power of the received HDSL2 signal relative to noise (S/N with respect to 21.5 dB).
PWR FEED OFF HDSL2 span power is turned off.
PWR FEED ON HDSL2 loop is not grounded or shorted.
SIG The transceivers of the H2TU-C and H2TU-R are trying to establish contact with each other
over the HDSL2 loop.
(a) Normal operating messages are in bold.
L
OOPBACK
Initiate loopback testing from the maintenance menus, the front-panel MODE and SEL
pushbuttons, or a test set. Inband codes used by a test set are shown in
Network
Toward Customer
Loopback Inband Code
NLOC 1111000
NREM 1110000
(a)
COLB
(a)
RULB
CREM 1111110
CLOC 1111100
SMJK 11000
Loopdown 11100
(a) Dual loopbacks can be initiated only from the front-panel MODE and SEL pushbuttons.
Copies of this publication or the user manual (LTPH-UM-1267) can
be downloaded from the ADC website at www.adc.com. To order
a hard copy, please contact your sales representative.
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 line unit DSX-1 output ports to the cross-connect
panel must be grounded at both ends.
Table 4. Front-Panel Diagnostic Messages
T
ESTING
H2TU-C
HDSL2
DSX-1
NLOC
CREM
* When enabled, TLOS is an automatic loopback
that occurs with an LOS at the remote DS1 input.
Table 5. 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-C and signal from the
customer is looped back to the customer at the H2TU-C.
DSX-1 signal is looped back to the network at the H2TU-R and signal from the
customer is looped back to the customer at the H2TU-R.
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.
DSX-1 signal is looped back to the network at the H2TU-R SmartJack module.
Deactivates any of the above loopbacks.
H2TU-R
DS1
NREM
CLOC
SMJK
TLOS*
Toward Network
Table 5.
Customer
Premises
H0025-B