B&K Precision 1739 - Manual - Manual (Page 16)

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4.4 Typical Constant Current Operation
1. Before connecting the device to be powered to the power supply, determine the
maximum safe voltage to be applied, and set the voltage controls to obtain that
voltage reading on the voltage LED display.
2. Determine the desired constant current value.
3. Set the coarse and fine current control to minimum (1mA). Wait 3 seconds.
4. Turn off the power supplies output and connect it to the device to be powered.
5. Turn on the power supplies output. The CC indicator should light.
6. Increase the coarse and fine current control setting until the desired constant
current value is read on the display, or set the current limit in advance (before
connecting the load) as described earlier in the Setting Current Limit procedure.
7. If the load current drops below the constant current value, the CC indicator will go
off and the CV indicator will light. In this case, the power supply automatically
switches to the constant voltage mode, and further rotation of the current
controls will not increase the output current.
Figure 6 - Typical Constant Current Operation