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You need some instruments to test fiber’s loss, for example: lamp-house, OTDR.
The process of optimization of arc parameter is same as process of fusion, you
can use instrument to test loss and change arc parameter properly, until loss is of
coherence and is the smallest. The general principles of optimization of arc parameter are:
1>
Increase of current will get similar effect with extending time in definite range.
2>
“Pre-fusion current” mustn’t be bigger than “Fusion current”.
3>
Do not modify value of “Fusion push”.
4>
Best to change value of “Push speed” after selecting current usually.
Notice:
1>
Optimization of arc parameter is effective only when arc electrode is well.
2>
Fusion loss displayed on screen is of reference only when arc parameter
is well and spliced fibers’ physical parameter is accordant.
8.4.2
Optimization of MM fiber arc parameter
Optimization of MM fiber arc parameter is different with SM fiber. The relation
between selection of MM fiber arc parameter and fusion loss is undemanding.
If process of splicing is smooth and splice spot is symmetrical, then loss is
satisfied, and you needn’t to test fusion loss.
Following are general principles of optimization of arc parameter when splicing MM fiber:
1>
The value of “Pre-fusion current” mustn’t be bigger than the value of “Fusion current”.
2>
The value of “Pre-fusion time” must bigger than splicing SM fiber.
The possible questions and measures are as follows:
1>
There is bubble when splicing.
Solution: Increase value of “Pre-fusion time”, then try to decrease value of “Fusion
current” if it is insufficient.
2>
Fusion is insufficient and the light string is broken in the center of fiber.
Solution: Increase value of “Fusion time” or decrease value of “Fusion current”.
3>
Fiber’s splicing spot becomes smaller.
Solution: Try to decrease value of “Pre-fusion current” or value of “Fusion current”.
Notice:
MM fiber fusion program uses special arc mode. It is normal that screen menu shakes or
you can hear “pa pa” when splicing.
9.
Setting working mode and parameter
9.1
Setting working mode
The working mode of Fusion Splicer are automatic operation
and manual operation. The operations are as follows:
1>
Press “MENU” to enter the first class menu;
2>
Press “▲” or “▼” to make cursor“
→
”
point to working mode to be selected;
3>
Press “◄” or “►” to select working mode;
4>
Press “ENT” to confirm;
5>
Press “MENU” to exit the first class menu, then working mode will be
displayed on the screen.
Notice:
1)
Auto operation and manual operation can’t be mixed.
2)
Best to press “RUN” to setting gap when it’s manual operation.
3)
The fusion splicer won’t estimate loss when it’s manual operation.