EXFO FTB-8500 Series for FTB-200 - Manual (Page 297)

EtherSAM Tabs
Ethernet and Fibre Channel Application 283
Overview (Configuration)
Latency Measurement
Note: Available with FTB-8120NGE and FTB-8130NGE modules in Dual Test Set
mode only.
Latency Measurement Mode: Allows to select either Round-Trip (default)
or One-Way as the latency measurement mode.
The one-way latency timestamp is synchronized with an external 1PPS
clock. One-Way latency is only possible when both the local and remote
1PPS signal clocks are valid. The following alarms are available with
One-Way latency measurement mode.
LOPPS-L and LOPPS-R (Loss Of Pulse Per Second - Local/Remote) is
declared when either no pulse is received or when no pulse is received
within 1 second ± 6.6 μs after the previous pulse. LOPPS-R is only
monitored once the DTS connection is established.
Sub-Tests Duration

Configuration Test displays the Configuration Test duration in
days:hours:minutes:seconds format based on Services, Ramp, and
Burst settings (see Services (Configuration) on page 285, Ramp
(Configuration) on page 291, and Burst (Configuration) on page 293).

Performance Test sets the Performance Test duration in
days:hours:minutes:seconds format. The default setting is 10 minutes.