VeEX MPA User Manual page 663

MPA_e_manual_D07-00-129P_RevA00
Protocol Tabs
Errors
Alarms
Latency
Jitter
Results - Event Screen
(Specifically for Fibre Channel SAN testing on the Packet tab)
The Results - Event function provides a detailed summary of when and how many
errors, alarms, and other specific activity that has occurred and has been recorded by
the unit since the time the test was started
663
•
Accept Bit Errors - A user-specified threshold value
for determining the acceptable bit error rate for a
timed test.
•
Accept Loss Rate - A user-specified threshold value
for determining the acceptable Packet Loss rate for a
timed test.
•
Pass/Fail - Test results are displayed as "Running"
when the test is active (Elapsed Time is
incrementing); and displayed as "PASS" or "FAIL"
when the test ends, depending on whether or not
specified failure criteria was attained.
Displays Error statistic as Counts, Errored Seconds,
Average error rate and Current error rate, for the following
Error Types:
•
Bit Errors Received
Displays Alarm statistics as total number of Seconds the
alarm was active during the test, for the following Alarm type:
•
Pattern Sync
Displays Minimum, Average, and Maximum latency (delay)
measurements, in microseconds (µs).
A latency measurement is taken every quarter-second (0.25
sec.) during stream transmission. These values are updated
(real-time) as new latency measurements are logged.
If the TX and RX are looped on itself with a short patch
cable, the latency may appear as 0 µs.
Fibre Channel does not support Packet Jitter
measurements.