THORLABS Vytran LFS4100, User Manual

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LFS4100 Chapter 7: Maintenance
Page 32 TTN047498-D01

Fit and secure the 2 screws that fasten the filament body to the furnace. Do not over tighten. Use a torque
wrench set to 6 lb-in.

Re-fit the stainless steel cover plates and fasten.

Switch the LFS4100 on, then initialize.

Press “Load Fibers” to bring the fiber holding blocks to the load position.

Load a fiber into the left and right fiber holding blocks.

Move the lens to Back View

Gap and align the fibers.

Press the “Filament View” macro button. The LFS4100 will move the lens and the mirror to the left end
view position.

Raise the splice head by typing 5motorto (14 @14) into the command window and hitting “Send.” It
should now be possible to view the fiber position relative to the filament on the PC monitor.

Shine an external light source into the fiber so that the end face is illuminated. It may take some
adjustment to get the light and the fiber positioned correctly.

Once the end face of the fiber is visible, move the fiber and/or the camera to bring the image of the fiber
end and filament into focus. Moving the fiber is accomplished by clicking the arrows in the Left Block box.
Moving the camera is accomplished by moving the slider in the Camera bar.

Check that the filament is positioned in the center of the filament height-wise.

Use the motor step command on motor 14 to adjust the splice head height (e.g. send 5motorstep (14 8)
to raise the splice head one micron). When the fiber is perfectly centered in the filament, record the
position of the splice head (given in the traffic viewer window), and make this the new userdata 14 (e.g.
5setuserdata (14 78000) ).