Revision 01
Section 350-231-164
HLU-231 List 6D
15
ALRM
Alarm Condition
Exists
A minor alarm condition is in effect.
1=xx or 2=yy
HDSL Loop
Margins
Indicates the relative S/N at each HDSL
transceiving input port. Any value of ‘06’
or greater is adequate for reliable system
operation.
PWR FEED
SHRT
Power Feed Short
Indicates a short between the 2 HDSL
pairs in span 1. This same message can
occur with an HRU is drawing the correct
amount of power over good cable pairs
but cannot communicate with the HLU.
PWR FEED
OPEN
Power Feed Open
Indicates an open circuit in both the tip
and ring of either HDSL pair in span 1.
BAD RT?
No response from
HRU
The HLU does not receive any
response from the HRU. Thus, the HRU’s
integrity is questionable.
VER
HLU Software
Version #
This is displayed during the System
Settings review mode. (Depress the
MODE button for 3 seconds to enter Sys-
tem Settings review mode.)
LIST 0xL
HLU’s List #
Displayed during System Settings
review mode defined above.
FRM
Frame: SF, ESF,
UNFR, NONE
Defines the type of frame pattern
being received from the DSX-1.
Displayed during System Settings.
CODE
Line Code: AMI,
B8ZS
This is the line code that the HLU is set to
receive and transmit at its T1
interfaces. Displayed during System
Settings mode defined above.
Diagnostic Messages (Continued)
Message
Full Name
Description
†
These messages only apply to systems with doublers present.
Summary of Contents for HLU-231
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