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USC-2 Manual > Board And Connectors > Stepper

Stepper
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The Stepper connector provides three TTL level inputs and six TTL level outputs.  All levels are defined in respect to GND. The pin assignment is shown in figure below.

stepper

Figure Figure 20: STEPPER connector assignment

warning

During USC-2 startup and when the laser signals are disabled by software, the Stepper_Outs will go into tri-state. It must be assured that the connected device defaults to a safe operation in this case. Potentially, a pull-up or pull-down resistor (about 4k7 ohm) has to be added to put the connected device into a safe state.