ADC HiGain H2TU-C-202 User Manual page 35

LTPH-UM-1208-01
3 To initiate a loopdown of all active loopbacks, press the
When prompted with the message: Are you sure (Y/N)?, press
cancel.
Field
Active Loopback
Alarm Type
Code Type
DS1 ES Count
DS1 SES Count
DS1 UAS Count
Frame Type
HDSL2 ES Count
HDSL2 SES Count
HDSL2 UAS Count
HG or (PL)
ID
INSL
LA
LPF
M
MAL
PRM
System Status
H2TU-C-202 List 7G
Table 15. Monitor Screen Descriptions
Description
An active loopback is indicated on the lower third of the Monitor screen. Available loopbacks are
indicated by gray text. See Table 24 on page 45
codes and activation methods.
Indicates type of alarm. See Table 23 on page 40
Type of DS1 line coding received or sent (B8ZS or AMI).
Errored Seconds—The sum of the Errored Seconds-Line (ES-L) and Errored Seconds-Path (ES-P)
counts detected on the DS1 input over a 24-hour period. Errors include DS1 frame errors, BPV,
and ESF CRC errors.
Severely Errored Seconds—The sum of the DS1 Severely Errored Seconds-Line (SES-L) and
Severely Errored Seconds-Path (SES-P) counts over the last 24 hours.
Unavailable Seconds—The number of seconds during which the DS1 input signal was absent over
a 24-hour period.
Type of DS1 framing detected at the input stream (SF, ESF, or UNFR).
Errored Seconds—The number of 1-second intervals that contained at least one CRC or LOSW
error. This value is a running total of the last 24 Hours.
Severely Errored Seconds—The number of 1-second intervals that contain at least 50 CRC errors
or one or more LOSW defects. An LOSW defect occurs when at least three consecutive HDSL
frames contain one or more frame bit errors. This value is a running total of the last 24 hours.
Unavailable Seconds—The number of seconds the HDSL2 loop is unavailable. This occurs after
10 contiguous HDSL SES and is retired after 10 contiguous non-SES seconds. This value is a
running total of the last 24 hours.
HG displays when the loopback was initiated from an HDSL2 Generic (HG) front panel or by a
maintenance terminal loopback command. PL displays when the loopback was initiated by a
command embedded in the DS1 data path payload (PL).
Circuit identification number.
Insertion Loss—The signal loss value for a 196 kHz signal over the cable.
Loop Attenuation—Indicates the attenuation of the Overlapped Pulse Amplitude Modulation
Transmission with Interlocking Spectra (OPTIS) pulse from the distant end. The value is related to
insertion loss at 196 kHz and should be kept under 28 dB. This value differs from the insertion loss
value of a conventional 196 kHz signal.
Line Power Feed—Indicates the HDSL2 line power is on.
Margin—The signal-to-noise ratio at all HDSL2 ports, relative to a 10
Margin Alarm—Indicates the margin on HDSL2 loop has dropped below the threshold (0 to 15 dB)
set by the operator.
The sum of the Performance Report Messaging - Near End (PRM-NE) and Performance Report
Messaging - Far End (PRM-FE) counts.
The presence or absence of an alarm condition is indicated on the lower right corner of all screens.
System: OK indicates that there are no alarms present; System: Alarm indicates the presence of
an alarm. Refer to "Using the Performance Screens to View Alarm Data" on page
June 6, 2003
Monitoring System Activity and Performance
SPACEBAR to select LPDN, then press
Y to initiate the loopdown or
for a summary of the HDSL2 generic loopback
for a summary of system alarms.
-7
ENTER .
N to
Bit Error Rate.
32.
27