AR3000 User’s Manual
16
Rev 1/10
4.1.6.
Laser Trigger (Green)
The Green wire is the Trigger input. It is normally left unconnected to enable the laser.
The trigger input is intended for triggering a distance measurement with an external signal
that is applied as a voltage on the green wire. A voltage between 3.0 V and 30 V is a HIGH
input and a voltage between 0 V and 1.5 V is a LOW input. It is for the user to specify a
desired delay time and a pulse flank to be selected for synchronization. The user must select
the DF measurement mode setting in the AR3000. An <Esc> character must be sent to exit
the trigger mode.
Figure 14 Wiring diagram for Trigger Input
If a switch is used, the input may need a debouncing circuit to prevent multiple triggers or
triggers on the wrong edge.
Figure 15 Debounce circuit for Trigger Input switch
white
brown
green
yellow
grey
pink
blue
red
black
violet
grey/pink (tan)
red/blue (orange)
