19 Operation on an ISDN Access
218
ARGUS 152
Setting
Explanation
BERT:
BERT time
You can use the keypad to enter measurement times ranging
from 1 minute to 99 hours and 59 minutes (= 99:59).
If the time is set to 00:00 (= BERT with unlimited
measurement time), the BERT will not stop
automatically. In this case, the BERT must be
terminated manually by pressing the
.
Default setting:
00:00
(continuous)
In the case of an Autom. Test
Performance of Multiple Tests, page 244)
the ARGUS will
automatically set this to a value of 1 minute.
Bit pattern
S/T/U
This function is used to select the bit pattern to be sent cyclically
by the ARGUS to perform a BERT on a S-Bus or U interface
access. Several predefined bit patterns are available
Default setting:
2
11
-1
Additionally, it is also possible to enter a 16 bit long pattern of
your choice in binary: Use the horizontal cursor keys to move the
cursor right or left.
<Delete>
Changes the digit before the cursor from 1 to 0
Error level
This is the level used to evaluate whether the BERT had an
"acceptable" bit error rate.
If the BERT has a bit error rate, which exceeds this error level,
the ARGUS will display a "NO" (Not OK) as the test result.
Using the keypad, this parameter can be set to any value from
01 (= 10
-01
) to 99 (= 10
-99
).
The default threshold (error level) is
10
-06
(1E-06). That means
that, in the event that the bit error rate is less than 10
-06
(one
error in 10
6
= 1,000,000 sent bits), the bit error rate test will be
evaluated as "OK".
HRX value
Setting the HRX value (Hypothetical reference connection, see
the ITU-T G.821). Using the keypad, you can enter a value
ranging from 0 to 100 %.
Default setting:
15 %
