Revision
01
March 17, 1998
350-611-101-01
16
PairGain
Engineering - Plant Series
HLU-611
List
1
Four-Character Diagnostic Messages
The HLU-611 List 1 diagnostic messages are listed in the table below.
Four-Character Diagnostic Messages
Message
Full Name
Description
FERR
Framing Bit Error
Occurred
Framing bit error occurred at HLU T1 input.
LBPV
Local Bipolar Violation
A bipolar violation has been received at the T1
input to the HLU-
611
.
SIG
Signal
The HLU & HRU transceivers are trying to
establish contact with each other.
ACQ
Acquire
The HLU & HRU multiplexers are trying to
establish synchronization over each.
ACO
Alarm CutOff
A minor alarm has occurred, and been retired to
an ACO condition, by pressing the
SEL
button on
the HLU front panel.
Self Test
The HLU is in a self test mode. This occurs every
power ON/OFF cycle.
ALRM
Alarm Condition Exists
A minor alarm condition is in effect.
M=X
VHDSL Loop Margin
Indicates the power of the received VHDSL signal
on each Loop relative to noise. Any value of ‘06’
or greater is adequate for reliable system
operation.
PWR FEED
SHRT
Power Feed Short
Indicates a short across the VHDSL pairs in span
1. This same message can occur with an HRU
that 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 the T&R of either
VHDSL pair.
PWR FEED
OFF
Power Feed Off
VHDSL span power has been turned off.
BAD RT?
No response from HRU The HLU does not receive any response from the
HRU. Thus, the HRU’s integrity is questionable.
