GPX3800 and GPX3850 Glass Processors
Chapter 6: Added Capabilities of GPX3800 / GPX3850
Rev B, July 24, 2018
Page 47
Cleave Tension (g):
This parameter is the load, in grams, applied axially to the fiber prior to initiating the scribe
process. The configuration menu provides both manual and auto-set options for setting the cleave tension. The
optimal cleave tension depends on the cross-sectional area of the fiber and its material properties. The auto-set
option will provide the appropriate cleave tension for silica fibers based on the fiber diameter specified by the
current fiber file.
Pre-Cleave Advance (steps):
This parameter is the distance, in steps, that the cleave blade moves forward prior
to initiating the scribe oscillation cycle. The configuration menu provides both manual and auto-set options for
setting the pre-cleave advance. The ideal precleave advance is dependent upon the fiber diameter, and must be
reduced as the fiber diameter increases
.
No of Cleave Cycles:
This parameter is the maximum number of oscillations that the cleave blade will attempt
during the scribe process. Because the cleave blade advances towards the fiber on each oscillation, this value will
determine the maximum total distance that the blade can advance during the scribe. The default is 60.
Cleave Forward Steps:
The number of forward steps that make up the forwards component of blade oscillation.
This parameter is the distance, in steps, that the cleave blade moves toward the fiber during each blade
oscillation. Typically, this parameter is set to 84 steps. Increasing this parameter (and correspondingly the
cleave
reverse steps
parameter) may be beneficial for the micrometer stop specialty process. The
cleave forward steps
parameter must always be greater than the
cleave reverse steps
parameter for the blade to oscillate toward the
fiber.
Cleave Reverse Steps:
The number of reverse steps that make up the reverse component of blade oscillation.
This parameter is the distance, in steps, that the cleave blade moves away from the fiber during each blade
oscillation. Typically, this parameter is set to 80 steps. Increasing this parameter (and correspondingly the
cleave
forward steps
parameter) may be beneficial for the micrometer stop specialty process. The
cleave reverse steps
parameter must always be less than the
cleave forward steps
parameter for the blade to oscillate toward the fiber.
Fiber Diameter:
The fiber diameter in micrometers.
Rotation Angle:
The rotation applied to the fiber (in degrees) for making angled cleaves. (Auto Parameter can
provide an estimate of this value).
Rotation Angle (degrees):
This parameter is the rotation angle, in degrees; the fiber is twisted prior to initiating
the tension process. The optimal rotation angle for a specific angle cleave is dependent upon the cross sectional
area of the fiber, the material properties of the glass, and the tension applied. Experimentation will be required to
identify the rotation angle required for the desired cleave angle. (Auto Parameter can provide an estimate of this
value). Set the rotation angle to 0° for a perpendicular cleave.
Scribe Delay:
This parameter is the delay, in seconds, between each of the cleave blade oscillations. Typically,
the scribe delay is set to 0.001 seconds (1 ms). Increasing the scribe delay may be beneficial for the subcritical
and the micrometer stop specialty processes.
Tension Velocity (steps/sec):
This parameter is the velocity (in steps per second) of the motor tensioning the
fiber prior to the scribe process. Typically, this value is set to 20 steps per second. Lower tension velocities may
be beneficial when the subcritical specialty process is enabled.
Pull Tension On Left:
When checked, the left fiber holding block is driven outwards to apply tension and the right
load cell is used for tension monitoring. When unchecked, the right fiber holding block is driven outwards to apply
tension and the left load cell is used for tension monitoring.
Fiber Z offset:
The optional Z-axis offset (in mm) that will be applied to both fiber holding blocks. A negative
value will move the fiber holding blocks to the left; a positive value will move the fiber holding blocks to the right.
Cleaver Z offset:
An optional Cleaver Z-axis offset that will be applied to the furnace and cleave blade. A
negative value will move the cleaver to the left; a positive value will move it to the right.