NF DP420LS Instruction Manual page 157

4. Advanced Operation
2. In the [Direction] item, select [SYS  USB].
3. From the data list box, select the arbitrary waveform to copy.
4. Push the [Copy] soft-key. A window to confirm the save name opens. Enter the name. Select
[OK] to copy. For how to enter a string, see 3.3.6.
138 PROGRAMMABLE AC POWER SOURCE