| DC | Normal input mode. Current is controlled by the current set value. |
|---|---|
| PULSE | Controlled by pulse function. |
| SINE | Controlled by sine function. |
| I-V | Controlled by arbitrary I-V characteristics. |
| EXT | The current set value is controlled by an external voltage. The external voltage input to EXT CONT is treated as an absolute value and applied to the current set value. |

