EFL Operator Guide
EFLTrak® Software
Part No. MAN/EN5103-0076 Page 28 of 34 Revision A (Jan 2014)
The Gauge Setup group box is used to select the gauge measuring the fiber length
and the gauge measuring the buffer length. The gauges are selected by either the
serial COM port they are connected to or by their IP address is they are connected to
the EFLTrak PC via Ethernet. EFLTrak automatically initiates a search for the
available gauges on startup and the status of the search is in the status bar at the
bottom of the group box. The gauge model and serial number are displayed to the
right of the gauge selectors. It is important that the correct gauge is selected for each.
The EFL calculations will not be accurate if the fiber and buffer gauges assignments
are reversed. The gauge selectors are disabled by default from being modified. The
magnifier button at the upper right corner of the gauge setup group box will manually
initiate a search of the available gauges. EFLTrak will automatically restore the gauge
selections to their previously saved selections if both gauges are found. If the
selections need to be changed, the EFL Setup dialog must first be unlocked.
The EFL Averaging Lengths group box is used to select the two lengths that the EFL
ratio will be calculated and displayed. The short EFL average is used to see changes
in the EFL that have short term affects. An example of this would be gel shifts. If the
gel has air pockets, the EFL ratio will vary widely over a short period while the long
term EFL ratio will not be affected. The long EFL average is used to show trends over
the entire manufacturing process.
The XY Axes Plot Spans group box is used to define the scaling for the X and Y axes
of both the Focus View and Run View plots. The EFL Y-Span setting is a common
setting for both plots. The Focus View velocity plot Y axis span can be setup to auto-
scale to the data received or it can be fixed to provide a consistent view of the velocity
data. To change the Y- axis velocity plot scaling, the EFL setup dialog must be
unlocked.
The Tolerances group box is used to set the nominal EFL value, the warning tolerance
offset and reject tolerance offset. The Y-axis centerline of the EFL plots will be set to
the nominal EFL value. EFL tolerance checking can be performed on the short EFL
average or the long EFL average. Place a check in the box next to the tolerance offset
values to be activated. When long EFL tolerances are selected, EFLTrak will also
calculate the process C
p
and C
pk
control statistics. Yellow and red colored tolerance
bands are added to the EFL plots corresponding to the configured EFL nominal and
selected tolerance offsets. The tolerance values are used to control the output of the
optional USB relay I/O module. The tolerance status is also updated and logged to the
EFL data file for each measurement. To modify the settings in the tolerance group
box, the EFL setup dialog must first be unlocked.
The buffer shrinkage setup can be used to compensate for online stretching and/or
offline shrinkage of the buffer tube. This compensation value can be used to make the
online EFL measurement match the offline EFL measurement. Only positive
shrinkage factors can be applied. To change the shrinkage value, the EFL setup dialog
must be unlocked.
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