EXFO ETS-1000 - Manual (Page 60)

Configuring and Starting a Test
52 ETS-1000
RFC 2544 Test Parameters Setup
Latency Test Settings
The objective of this test is to find the time required for the sent frame to go
through the unit under test and return to the ETS-1000 analyzer. Starting by
sending a stream of frames for the predefined duration and rate at a
particular frame size, an identifying dependent tag is included in one
frame. The time at which this frame is transmitted is recorded (timestamp
A). When the tagged frame comes back, the time is recorded again
(timestamp B) and the Latency result is: timestamp B - timestamp A. The
test is repeated for the defined number of times and the average result is
calculated.
The Latency test is performed for each defined frame size.

Enabled: Enable (Yes) or Disable (No) the latency analysis.

Trial qty: indicates the number of test trials performed for each
specified frame size.

Trial, s: indicates the period of time during which the test is performed
for each of the specified frame sizes. The accepted range is 1 to
2886 seconds.

Rates (L1): switched to Rates (L1) menu.