NF DP060LM Instruction Manual page 78

3. Basic Operation
2. Move the cursor to [Exec] of the [Ipk-H Clr] item and press the ENTER key.
3. Close the window. For how to close the window, see 3.3.4.
  Operation procedures by using shortcuts
1. +
Press the SHIFT key to enter the shift state (the SHIFT LED illuminates). When you press the
+/  key in the numeric keypad in the shift state, the output current peak-hold value is cleared.
60
Clearing the current peak-hold value
PROGRAMMABLE AC POWER SOURCE