Keithley 2230 Series Quick Start Manual page 22

Example: Combine I1+I2 in parallel
To combine channel 1 and channel 2 when the outputs
are wired in parallel:
1. Connect the outputs in parallel as shown.
2. Press the Menu key.
3. Use the arrow keys to select Combine.
4. Press the Enter key.
5. Press the down arrow key to select I1+I2 Parallel.
6. Press the Enter key. The screen returns to meter mode.
Verify that the Para indicator is displayed, replacing the
channel 2 voltage and current readings. This indicates
that the power supply is in the I1+I2 parallel state. The
total output current is displayed on channel 1.
7. Set channel 1 to the current value you want.
Turn off combine
To turn off the combine function:
1. Remove all connections to the output terminals.
2. Press the Menu key.
3. Use the arrow keys to select Combine.
4. Press the Enter key.
5. Press the down arrow key to select Combine Off
(default).
6. Press the Enter key.