Instruction Manual

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a. Enable/Disable signal (pin 2): TTL levels.
High (5V): enabled
Low (0V): disabled
b. Clock pulse (pin 3): Square wave TTL levels 0/5V.
Pulse: , minimum width 2µs
recommended: 50% duty cycle
The clock rate controls the MDL scan speed. Depending on the step
mode, the motor moves ¼, ½, or 1 full step per clock pulse received.
c. Directional signal (pin 1): TTL levels.
High: CCW, MDL-003 reverse direction
Low: CW, MDL-003 forward direction
If the board is being used to drive an MDL-003, the MDL scan status also
depends on the state of the home and far end position sensors. With the MDL
cable connected to the board, the board will automatically sense the state of the
position sensors.
Document # GP-IN-MDL-003-CONTROLB-12 Page 10 of 13