89 North LDI-6 Operating Manual page 25

If 'Host USB' mode is selected for intensity control, set channel intensities to the desired levels (0-100%)
via the slider, arrows (incrementing by 1%), or text controls in the GUI (Figure 20). Additionally, clicking in
the intensity bar space for a given channel will increment the intensity setting by 10%.
If 'External Analog' control mode is selected for intensity control, verify the applied voltage levels (0-5V)
correspond to the desired intensity settings as reported in the GUI.
Figure 20. Controls of the LDI can be changed on the home screen of the GUI using the slider, arrows, text boxes, or by
clicking in the intensity bar space.
If 'Host USB' mode is selected for shutter control, open the shutters of the desired channels by clicking
the shutter buttons of the corresponding channels. The buttons will toggle between "Shutter Open" and
"Shutter Closed" when clicked.
Turning Lasers On (Run Mode)
The LDI supports the concurrent operation of up to 4 laser lines. In 'Host USB' control mode, the system
limits the number of concurrently open shutters to 4. In 'External Digital' shutter mode, the number of
concurrently open shutters is not constrained by the LDI firmware. Attempting to operate more than 4
channels simultaneously could lead to performance degradation or over-temperature conditions.
Operation of more than 4 laser line channels simultaneously is not recommended.
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