M90 Fusion Splicer 1-10 Operating Instructions
Getting to Know the M90 Fusion Splicer Issue 02/97
External LID
input
The LID system cannot be employed for optical fibers of diameter > 250 µm over the
coating or for optical fibers with a color coating impermeable to light.
If you have an external attenuation test set, you can nevertheless still perform fully
automatic fusion by selecting the "Fixed parameters (LID)" or "Variable fusion curve"
program group in the Parameter menu.
The external attenuation test set must have the following features:
Permissible output voltage U
out
0 V ≤ U
out
≤ 10V
Voltage level Variable DC voltage
Wavelength 800 - 1600 nm *
Settling time (rise or fall time of output
voltage)
10 ms - 500 ms *
Signal-to-noise ratio of output voltage >20 dB
Recommended output voltage range for
automatic mode
1 V ≤ U
out
≤ 10 V
* can be set in Parameter menu
Jack plug A two-pin or three-pin plug of diameter 3.5 mm and a shielded cable must be used for
connecting the external analog attenuation test system.
+
-
Connecting the Plug
The "-" and "Ground" connections are interconnected in the splicer.
If your external attenuation test set has a settling time of 10 ms, the splicer functions
automatically at the original speed. If the settling time is very long, e.g. 200 ms, the
positioning procedure can take significantly longer.
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