METRODATA NetTESTER FAMILY USER MANUAL
76-02-107 Rev.A
Page 104 of 133
FIBRE PRBS
State Disabled
pattern PRBS7
pOlarity Inverted
Results <display>
14.2.9.1 State
Menu Tree: Main Set-Up /
T
esting /
F
ibre PRBS /
S
tate
The PRBS test can be started or stopped from this item.
14.2.9.2 Pattern
Only PRBS7 pattern is supported.
14.2.9.3 Polarity
Menu Tree: Main Set-Up /
T
esting /
F
ibre PRBS / P
O
larity
A normal or inverted version of the patter may be selected.
14.2.9.4 Results
Menu Tree: Main Set-Up /
T
esting /
F
ibre PRBS /
R
esults
The results screen displays the running time, the number of errors detected, and the
equivalent bit error rate.
These may be manually cleared either during or after the test has run.
BERT Test Results
-----------------
Test Seconds 57
Bit Errors 320864334
Bit Error Rate 4.5E-3
<Esc> - exit, C - clear, <Enter> - refresh
14.3 Performance Monitoring
Menu Tree: Main Set-Up / Pe
R
f Monitoring
The unit supports multiple performance monitoring sessions using TWAMP.
TWAMP measures Frame Loss Ratio (FLR) based on synthetic packet loss, round
trip delay (FTD), and one-way delay variation (IFDV).
TWAMP support includes hardware timestamping to give sub micro-second
accuracy.
The performance monitoring summary screen shows all the currently configured
sessions/peers, as shown below:
