ADC H2TU-C-202 User Manual page 14

Front Panel
Message Full Name
DIAGNOSTIC MESSAGES
A = xx Maximum Loop Attenuation
ACQ Acquisition
ARM HiGain System Armed
BAD RT? No Response from H2TU-R
FERR Framing Bit Error Occurred
HES HDSL2 CRC Error
LBPV Local Bipolar Violation
M=xx HDSL2 Loop Margin
MNGD Managed
PWR FEED OFF Power Feed Off
PWR FEED ON Power Feed On
SIG Signaling
SYSTEM INFORMATION MESSAGES
CODE xxxx Line Code: AMI or B8ZS
FRM xxxx Frame: SF, ESF, UNFR
LATT xx Loop Attenuation
LIST xx List Number
MARG xx Margin
VER x.xx Software Version Number
(a) System information messages are displayed in Scroll mode. To scroll through the messages, press the MODE pushbutton for
3 or more seconds.
6
Table 2. Front-Panel Display Messages (Continued)
Description
The Attenuation (A) message appears followed by xx, where xx is the
highest loop attenuation measured in dB.
The multiplexers of the H2TU-C and H2TU-R are trying to establish
synchronization over the HDSL2 loop.
Armed to respond to Intelligent Repeater Loop (ILR) codes.
The H2TU-C does not receive any response from the H2TU-R and all
HDSL2 loop conditions are normal. Therefore, the integrity of the H2TU-R
or the HDSL2 loop is questionable.
Framing bit error occurred at H2TU-C DSX-1 input.
H2TU-C HDSL2 Loop Cyclical Redundancy Check (CRC) error.
A bipolar violation has been received at the DSX-1 input to the H2TU-C.
Indicates the power of the received HDSL2 signal relative to noise (S/N
with respect to 21.5 dB). Any value of 6 dB or greater is adequate for
reliable system operation.
The H2TU-C is under control of the HMU-319 network management unit.
In this state, the front-panel craft port and pushbuttons are disabled.
HDSL2 span power has been turned off by setting the PWRF option to off,
or HDSL2 span power has been turned off by use of the A1LB, A2LB, or
A5LB Intelligent Office Repeater (IOR) Power Down code.
Indicates that the HDSL2 loop is not grounded or shorted.
The transceivers of the H2TU-C and H2TU-R are trying to establish
contact with each other over the HDSL2 loop.
(a)
The line code that H2TU-C is receiving at its DSX-1 interface, if the DS1
option is set to AUTO. Otherwise, it mimics either of the other two DS1
line codes, Alternate Mark Inversion (AMI) or Bipolar with 8-Zero
Substitution (B8ZS).
Defines the type of frame pattern being received from the DSX-1:
SuperFrame (SF), Extended SuperFrame (ESF), or Unframed (UNFR).
Current loop attenuation threshold setting is measured in dB.
List number of the H2TU-C-202.
Current margin threshold setting is measured in dB.
Software version number of the H2TU-C-202.
October 25, 2002
LTPH-UM-1072-03
H2TU-C-202 List 2F