JDS Uniphase SmartClass E1, User Manual

Page: 98 / 144

Chapter 7 Test Results
E1 Results
82 SmartClass E1 Tester User’s Guide
Performance results
The SmartClass E1 provides performance analysis results in accordance with
the ITU-T G.821, G.826, and M.2100 standards. The following sections
describe the results for each standard.
G.821 results Table 15 describes the G.821 performance results.
Pattern Sync Losses Number of times pattern synchronization is lost since
the last test start or restart.
Pattern Sync Loss
Seconds Number of seconds during which the receiver has lost
pattern synchronization, even momentarily, since initial
pattern synchronization.
Round Trip Delay (ms) The round trip delay for the last delay pattern sent and
successfully received by the SmartClass E1. Calcu-
lated in milliseconds.
Table 14 Test (BERT) results (Continued)
Result Description
Table 15 G.821 performance results
Result Description
Verdict “Accepted” indicates that the test results have met the ITU-T Rec.
G.821 performance objectives.
“Rejected” indicates that the test results did not meet the perfor-
mance objectives.
AS Available Seconds. A count of the number of Test Seconds which
met the ITU-T Rec. G.821 definition of available time.
ES Errored Seconds. The number of available seconds during which
one or more relevant anomalies or defects were present.
ESR Errored Seconds Ratio. The ratio of errored seconds to the num-
ber of available seconds.
SES Severely Errored Seconds. Seconds during which one or more
defects were present or the anomaly rate exceeded the ITU-T
Rec. G.821 threshold.
SESR Severely Errored Seconds Ratio. The ratio of severely errored
seconds to the number of available seconds.
UAS Unavailable Seconds. A count of the number of test seconds
which met the ITU-T Rec. G.821 definition of unavailable time.