Operation Manual

ARGUS
A
RGUS 125 61
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Characteristic values in accordance with ITU-T G.821 / G.826
<G.826> Display of the G.826 characteristic
values
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HRX Defines the hypothetical reference connection
EFS Error Free Seconds:
The number of seconds in which no error occurred.
ES821 Errored Seconds:
The number of seconds in which one or more errors occurred.
SES821 Severely Errored Seconds:
The number of seconds in which the bit error rate is >10
-3
.
In one second, 64,000 bits are transferred, thus BitERror=10
-3
equates to
64 bit errors.
US Unavailable Seconds:
The number of all sequentially adjacent seconds (at least 9 sec) in which
BER>10
-3
.
AS Available Seconds:
The number of all sequentially adjacent seconds (at least 9 sec) in which
BER<10
-3
.
DM Degraded Minutes:
The number of minutes in which the bit error rate is >10
-6
.
In one minute, 3,840,000 bits are transferred, thus a BER = 10
-6
corresponds to 3.84 bit errors (3 errors = NO (no Degraded Minutes), 4
errors = OK (Degraded Minutes).
LOS Loss of Synchronisation:
Synchronization is lost at an error rate > or = 20% within a second. The
absolute number of synchronization losses will be shown.