M90 Fusion Splicer 3-6 Operating Instructions
Parameters and Programs Issue 02/97
Description of
the programs
Significance / influence / application
Automatic fusion
time
The splicer uses the LID system to measure the attenuation during the fusion process.
Fusion is terminated as soon as the optimum attenuation is reached. The range in
which the fusion time can be varied is adjustable up to 10 seconds. A minimum fusion
time of 0.8 seconds is recommended.
Fixed parameters
(LID)
If automatic fusion time control is not to be used (e.g. for test purposes), the fusion time
can be preset in this program group. Positioning and attenuation evaluation are per-
formed as in program group "Automatic fusion time".
Fixed parameters
(video)
This program is used to perform precision fiber positioning using the video camera. It is
thus also possible to fuse fibers for which the LID system cannot be used. Alignment is
performed on the basis of the outer contour and the lens effect of the fibers. Conse-
quently, good fiber quality - particularly as regards the eccentricity of the fiber core rela-
tive to the outer contour - is essential for sound splices.
Variable fusion
curve
This program allows you to influence the time profile of the fusion current. The "fusion
curve" is defined by 11 points which all have the same time interval. For each individual
point you can use the Parameter menu to set the required percentage of the set fusion
current. 100% corresponds to the set current. The minimum percentage that can be set
depends on the fusion current selected and corresponds to 10 mA.
%
100
90
80
70
60
50
40
30
20
10
1
23
4
567891011
P1
P2
P3
P4
P5
P6 P7
P8
P9
P10
P11
Example of a Splicing Curve
points
set fusion time
Attenuation splice This program group allows you to produce attenuators. The required attenuation can be
set in steps of 0.1 dB over the range 0 to 10 dB. This attenuation is then realized and
displayed fully automatically by a special fusion procedure.
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