FFS2000 Series Chapter 9: Proof Test (Item #s FFS2000PT and FFS2000WS)
Rev B, July 21, 2017 Page 57
CAUTION
Always use the safety shield or wear safety glasses when proof or tension testing fiber. The fiber
under test can shatter and send glass particles flying.
After failed proof tests, clean up glass debris, as this can cut the skin. Any glass debris should be
disposed of in a glass waste container, such as Thorlabs’ Item # FTDU.
Figure 49 Proof Test Mandrels and Fiber Splice in Test Position
9.2.2. Adjusting the Proof Test Cycle
The ramp rate, cycle time, and/or peak tension setting may need to be adjusted to obtain the desired proof test
cycle. It is recommended that a test piece of fiber be used when first adjusting the proof test cycle. The
procedures for adjusting the proof test cycle are as follows:
1. Ensure the proof test presets are set as desired.
2. Load a piece of test fiber onto the proof test mandrels. (Refer to Section 9.2.1 for instructions).
3. Make sure the safety shield is in place and you are wearing safety glasses. (Note: Anyone observing the
test should also take precautions against flying glass particles.)
4. Initiate the proof test by selecting the Test button on the splicer.
5. The peak level should be reached slowly (5 seconds) and held briefly (1/2 second). If the peak tension
is not reached, increase the ramp rate by turning the Ramp screw on the splicer counterclockwise. If the
peak tension is reached too quickly, decrease the ramp rate by turning the Ramp screw clockwise. Some
iteration between the ramp rate and peak tension setting may be required in order to achieve the desired
proof test cycle.
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