Manual

33
modewithapower-onsoundandaashingALTLED.
Atrsttheunmodulatedmodeisactive.TheFOsignalashesandcorre-
spondingly the ALT LED 1 × per second. To switch to the equally unmodulat-
ed constant FO signal Continuous Wave (CW), press the SOLID key.
To change to the modulated mode, press the ALT or SOLID key > 2 s, de-
pending on which signal you want. In each mode, 3 possible tone sequences
are available which can be activated by pressing the key again for > 2 s.
The tone sequence will be audible on the integrated speaker once right after
switching.
In case thatseveral bersare tobe distinguished, several ET800 can be
usedtogetherbutwithdi󰀨erentmodesandincombinationwithsuitablede-
tectionequipmentconnecttotheendofthebers.
Independent of LASER mode, the laser light source can be used to detect
small breaks in bad connections, strong bends and the end of the connected
cable.Thesearchdistanceis>10km,butdependsonthebertype.