Chapter 1 Planning Your Measurements
Triggering Options
1-6 Measurements Reference Guide
You can use the auto triggering option for timebase measurements. If you
do, you must enable the machine encoder for any measurement other than
linear.
For linear measurements, the system uses the encoder position if you
enable the encoder. Otherwise, the system uses the laser position.
The auto triggering option uses the Target Window and Trigger Dwell
fields on the Set Up Measurement screen.
If repeatability is a problem, increase your dwell time (on the Set Up
Measurement screen). You might have to do this several times to obtain
good results.
Encoder
When you use the encoder option, the machine tool’s encoder pulses serve
as the position reference enabling you to make measurements “on-the-fly.”
The machine does not stop and make a measurement; it automatically
makes the measurement when the encoder reaches the target position.
Two types of encoders are supported: A-quad-B and Up/Down. If you are
using the encoder triggering option, be sure the encoder resolution on the
Set Up Laser screen matches the position distance of one encoder count.
The target list must be evenly spaced since a measurement is taken every
nth encoder pulse.
Extended resolution cannot be used with the encoder triggering option
since extended resolution requires the machine tool to be stopped at each
measurement point.
The encoder triggering option does not use the Target Window or Trigger
Dwell field on the Set Up Measurement screen.
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