51
XL laser system
XL-80 hardware XL-80 applications
Slow trigger
This mode allows the XL laser to be triggered using a noisier trigger signal, for
example from a relay or switch as shown opposite. This signal is applied to the
slow trigger pin of the auxiliary I/O port. The time delay between the leading edge
of the trigger pulse and the instant the laser reading is received is longer than the
fast trigger mode.
Slow trigger specifications
Active Edge Falling
Minimum pulse width 5 ms
Switch debounce < 20 ms
Trigger delay 8 ms
Maximum input voltage ± 12 V
Open
Closed
Active pulse width > 5 ms
Active edge: position sampled here
Switch bounce < 20 ms will be ignored
Pin 17
Slow trigger input Pin 15
Tr igger input protected
to ± 12 V DC
TTL
10 K
0
V
+3.3 V
Electrical interface for slow triggering