Laser beta lasermike LS8000-3 - Manual (Page 51)

LaserSpeed 8000-3 Instruction Handbook
Interfacing with the LS8000-3
Part No. 93463 / Drawing No. 0921-01561 Page 51 of 221 Revision A (Sep 2007)
Measurement Direction Input (Pin 14)
This is an optically isolated input that can be used to externally control the
Measurement Direction feature of the LS8000-3. The input requires a voltage
high (5 to 24V) to activate. The input level should be the same as the voltage
connected to the User V
IN
input (Pin 20) or 5V if there is nothing connected to
the User V
IN
input.
Optically Isolated Input Schematic
There are two ways to reverse the direction of the LS8000-3's measurements:
1. Modify the Direction Inversion setting with LaserTrak (or using the "A"
serial command)
2. Connect 5-24V to the Measurement Direction Input
Changing the Direction Inversion setting with LaserTrak to invert the direction has
the same effect as changing the state of this input.
Note: If the Direction Inversion setting is set to "Reverse +/- Directions" and
the Measurement Direction Input is high, they will cancel each other
out and the LS8000-3 will operate in the default manner.
Direction
Inversion Setting Measurement Direction Input LS8000-3 Direction
Normal Low (Disconnected or 0v) Normal
Normal High (5-24V) Reversed
Reversed Low (Disconnected or 0v) Reversed
Reversed High (5-24V) Normal