Wise TSW200E1, Manual

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TSW200E1
F1 F2 F3 F4
MENU %
G . 8 2 1 / B I T
ERRORED SEC = 0000000
SEV.ERR SEC = 0000000
DEGRADED MIN = 0000000
AVAILAB. SEC = 0000000
UNAVAIL. SEC = 0000000
ERR. FREE SEC = 0000000
The G.821 counters are the following:
•
ERRORED SEC: shows how many one-second time intervals have at least one error.
•
SEV. ERR. SEC: shows how many one-second time intervals have a bit error rate equal
or greater than 1.10
-3
.
•
DEGRADED MIN: shows how many one-minute time intervals have an error rate
greater than 1.10
-6
.
•
AVAILAB.SEC: quantity of available seconds during the test.
•
UNAVAIL.SEC: quantity of unavailable seconds during the test.
•
ERR.FREE SEC: shows how many one-second time intervals have no error.
To go back to the menu screen, press <F2> (MENU). To display these counters in percent
values, press <F3> (%). Below is presented the description of each displayed value. These
parameters follow ITU-T Recommendation G.821.
•
ERRORED SEC: indicates the rate between the number of one-second time intervals
that have at least one error and the available measuring time.
•
SEV. ERR. SEC: indicates the rate between the number of one-second time intervals
where the bit error rate is equal or greater than 1.10
-3
and the available measuring time.
•
DEGRADED MIN: indicates the rate between the number of one-minute time intervals
where the error rate is greater than 1.10
-6 and the available measuring time.
•
AVAILAB. SEC: indicates the rate between the available measuring seconds and the
total elapsed time. The available measuring seconds are given by the difference between
the total measuring time and the unavailable time.
•
UNAVAIL. SEC: indicates the rate between the unavailable measurement seconds and
the total elapsed time. The unavailable time is evaluated when a bit error rate, for one-
second intervals, is greater than 1.10
-3
, for 10 consecutive seconds.
•
ERR. FREE SEC: indicates the rate between the number of one-second time intervals
that have no error and the available measuring time.
4.4.3 - Rates & Alarms
When the Rates & Alarms option is chosen on the menu screen, the following screen is
displayed.
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