Wise TSW200E1, Manual

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TSW200E1
•
code error (CODE ERR).
It also displays the test time (TIME).
It does the clock SLIP analysis (according to ITU-T Rec. G.822) and the following analyses:
•
AIS
•
Signal sync losses (SIGNAL LOSS)
•
Frame losses (FAS LOSS)
•
Multiframe losses (CAS LOSS)
•
CRC LOSS
•
Pattern loss (PAT. LOSS)
•
REMOTE ALARM
•
Remote multiframe alarm (RMF ALARM)
The error analysis is done following ITU-T Rec.G.821 for the BIT ERROR, FAS ERROR,
CRC ERROR and E-BIT counters, counting errored seconds (ERRORED SEC.), severely errored
seconds (SEV.ERR.SEC.), degraded minutes (DEGRADED MIN.), available seconds
(AVAILAB.SEC.), unavailable seconds (UNAVAIL.SEC.), error free seconds (ERR. FREE SEC),
bit error rate (BER) and block error rate (BLER). For the TX/RX FRAMED mode, the ITU-T
G.826 and M.2100 analyses are performed.
There is the possibility of insertion of:
•
bit errors, changing any bit in the sequence,
•
FAS errors, altering one or more bits of the even frames FAS word,
•
CRC errors.
The bit errors can be manually inserted in the SINGLE mode (one single error inserted at a
time by pressing the ERROR key) or automatically according to a user-chosen bit rate, varying
from 10
-1
to 10
-7
.
For the FAS and CRC errors, the user can:
•
use the ERROR key to input SINGLE errors, in the SINGLE mode,
•
choose automatic error insertion, with bit error rate of 10
-3
•
ditto, 10
-5
When the automatic error insertion is chosen, if the ERROR key is pressed during the test,
the insertion of errors is automatically toggled to SINGLE mode.
When the 2Mbps G.703 interface is used, its impedance can assume the following values:
•
75 ohms (unbalanced - UNBAL)
•
120 ohms (balanced - BAL)
•
HIGH-Z - high impedance (balanced - BAL or unbalanced - UNBAL).
5.1 - E1/G.704 Module test procedure
After correctly making the connections and after setting the equipment configurations, press
START to run the test. The RUN LED will remain on while the test is running. To stop the test,
press the start/stop key.
In the following sections, the configurations and tests for each module will be described in
detail. Note that the OK screen below will be displayed when the START key is pressed to run the
test, with the exception of the Monitor, Frequency/Level and Round-Trip Delay modes. This screen
shows that the test is running, the time elapsed and the status of each slot. If the test does not
display any error or alarm, the equipment will remain in this screen, waiting for user intervention
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