L-3 Communications Navigation Echosounder LAZ 5100 - Manual (Page 26)

Page 3-8
L-3 ELAC Nautik
Deadman alarm : altering parameters of the unit causes an output
to a central alarm unit ( potential free relais
contact )
Power alarm : when the power supply voltages decreases 100
V a visual and audio alarm ( with mute control )
is activated, a potential free output for external
use is available ( potential free relais contact )
.