11.2. Frequently Asked Questions - THORLABS vytran LDC450B User Manual

LDC450B Large Diameter Cleaver Chapter 11: Servicing and Troubleshooting

11.2. Frequently Asked Questions

Q: What is the backstop/camera assembly used for?
The micrometer stop and the USB camera are primarily used for cleaving highly stressed (MM and PM) fibers and
capillary tubing that require a lower than typical cleave tension. The micrometer stop process utilizes a support or
"backing" applied to the fiber during the fiber loading. To use the micrometer stop, load the fiber in the fiber holder
and place the fiber holder in the nest. advance the micrometer until the end just contacts the fiber. Close the fiber
holding block lid. Initiate the cleave by pressing the blue button. After cleaving, back-off the micrometer away from
the cleaved fiber prior to unloading. This will ensure that the fiber does not contact the micrometer during
unloading.
Q: How many cleaves per blade?
With proper cleaving parameters, typical blade life is up to 5,000 cleaves per position and there are ~10 positions
per blade.
Q: When do I use the thumbscrews?
Thumbscrews on the fiber holding block lid and the fiber holder clamp provide additional clamping force for large
diameter fibers (>400 microns) or for fibers with very slippery buffer coatings requiring additional clamping force.
Q: How can I check the quality of my cleaves?
One way to check cleave quality is to use an interferometric cleave checker. However, if you are working with a
GPX3400, GPX3600, or LFS4100 fusion splicer, it is much more efficient to use the GUI to measure the cleave
angles and view the endface.
For other questions, contact techsupport@thorlabs.com.
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