Measurement Modes - Wavetek ANT-20 Operating Manual

Concatenation Options
2.4.2.2

Measurement modes

2.4.2.3 Anomaly measurements
The following anomalies can be indicated and evaluated in addition to the anomalies described
in Sec. 2.3.4, Page S-18.
Anomaly
HCOR
HUNC
CER
CLR
CMR
AAL-1-CRC
AAL-1-PE
AAL-1-CLR
AAL-1-CMR
Table S-14
The anomalies HUNC and HCOR apply to the complete cell stream. All other anomalies apply
to the measurement channel only.
2.4.2.4 Defect detection
The following defects can be indicated and evaluated in addition to the defects described in
Sec. 2.3.5, Page S-19.
Defect
LCD
OCR
OCLR
OCMR
VC-AIS
VC-RDI
VP-AIS
VP-RDI
AAL-1-OOS
1 Test channel: Maximum cell rate (CBR) = 149760 kbit/s;
Max. consecutive cells at 599040 kbit/s = 400
2 More than 255 cell losses in 100 ms or relative to the last test cell
3 More than 255 misinserted cells in 100 ms or relative to the last test cell
Table S-15
S-22
LED
-
-
-
-
-
-
-
-
-
Indication and evaluation of anomalies
LED
LOF / LCD
LOF / LCD
-
-
-
-
-
-
-
LED display of additional defects
Explanation
Correctable Header Error
Uncorrectable Header Error
Cell Error Ratio
Cell Loss Ratio
Cell Misinsertion Rate
AAL1 CRC Error
AAL1 Parity Error
AAL1 Cell Loss Ratio
AAL1 Cell Misinsertion Rate
Explanation
Loss of Frame / Loss of Cell Delineation
1
Overflow Cell Rate
2
Cell Loss Overflow
Cell Misinserted Overflow
Virtual Channel Alarm Indication Signal
Virtual Channel Remote Defect Indication
Virtual Path Alarm Indication Signal
Virtual Path Remote Defect Indication
AAL1 Out of Sync
ANT-20/ANT-20E
for measurements
using test cells
for AAL-1
measurements
for measurements
using test cells
3
Specifications OC-12c/STM-4c