ADC H4TU-C-231-L1 User Manual page 54

Testing
Front-Panel
Alarm
(a)
Message
xxx-DBER DS1 Bit Error Rate
xxx-LOF Loss of Frame
PRMN Performance Report
Messaging - Near End
PRMF Performance Report
Messaging - Far End
(d)
xxxx-HBRx HDSL4 Block Error
Rate
(d)
xxxx-MALx Margin Alarm
(d)
xxxx-LAx Loop Attenuation
(a) The message, ALRM, displays prior to any alarm message.
(b) Message displays repeatedly as long as the alarm condition exists and is not included in the priority order.
(c) When the HDSL4 loop loses sync word (LOSW), a system alarm condition exists. However, since the H4TU-C-231 List 1
enters the acquiring mode, the front-panel status LED flashes red, and the ACQ or SIG message displays instead of the ALRM
message.
(d) Only these alarms assert the System Alarm bus on pin H of the card-edge connector, if the ALM option is set to enabled.
44
Table 15. Front-Panel System Alarms (Continued)
Description
The DS1 BER has exceeded the set 24-hour
threshold limit of approximately 10
denotes either TUC or TUR. If TUC and TUR
occur at the same time, then TUC displays.)
The DS1 input does not contain the ESF or SF
frame pattern setting of the FRMG option.
(xxx denotes either TUC or TUR. If TUC and
TUR occur at the same time, then TUC
displays.)
H4TU-R PRM-NE BER threshold has been
exceeded.
H4TU-R PRM-FE BER threshold has been
exceeded.
The HDSL4 BER has exceeded the set
-6
threshold limits of 10 or 10
xxxx denotes TUC, TUR, or first
(DU1U/DU1D) or second (DU2U/DU2D)
doubler HDSL4 upstream or downstream
interface. If TUC and TUR occur at the same
time, then TUC displays. The single x
indicates Loop 1 or Loop 2.
The margin on the HDSL4 loop has dropped
below the minimum threshold value set for the
system.
xxxx denotes TUC, TUR, or first
(DU1U/DU1D) or second (DU2U/DU2D)
doubler HDSL4 upstream or downstream
interface. If TUC and TUR occur at the same
time, then TUC displays. The single x
indicates Loop 1 or Loop 2.
The attenuation on the HDSL4 loop has
exceeded the maximum value set for the
HDSL4 loop attenuation threshold.
xxxx denotes TUC, TUR, or first
(DU1U/DU1D) or second (DU2U/DU2D)
doubler HDSL4 upstream or downstream
interface. If TUC and TUR occur at the same
time, then TUC displays. The single x
indicates Loop 1 or Loop 2.
September 12, 2003
To Inhibit:
Select DIS for the DBER system option.
-6
. (xxx
Change FRMG option to AUTO or UNFR.
Set DBER threshold to DIS.
Set DBER threshold to DIS.
Select NONE for the HBER system option.
- 7
.
Set the Margin Alarm Threshold option to
zero.
Set the HDSL4 Loop Attenuation
Threshold option to zero.
LTPH-UM-1138-02, Issue 2
H4TU-C-231 List 1