National Instruments NI 9512 User Manual - page 65
Glossary
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D
dedicated
Assigned to a particular function.
Direction output
Command signal for stepper motors, indicates the commanded
direction of motion, either forward or reverse.
drive
Electronic signal amplifier that converts motor control command
signals into higher-voltage signals suitable for driving motors.
driver
A hardware device that provides signals or electrical current to
activate a transmission line.
E
encoder
A device that translates mechanical motion into electrical signals;
used for monitoring position or velocity in a closed-loop system.
encoder resolution
The number of lines per unit of measure. Units can be inches,
centimeters, revolutions, and so on.
F
filtering
A type of signal conditioning that removes unwanted noise from the
signal being measured.
full-step
The coarsest mode of stepper motor driving that occurs when fully
energizing the windings.
H
half-step
A stepper motor mode. For a two phase motor, half-step mode is done
by alternately energizing two windings and then only one. In half step
mode, alternate steps are strong and weak but there is significant
improvement in low-speed smoothness over the full-step mode.
high
An input or output is high if the voltage is higher than the specified
digital logic high level.