Local Operation 
 
M370430-01  Rev B  3-3 
Coarse and Fine Adjustment Modes 
The coarse and fine adjustment modes are used for setting the voltage 
and current set points, OVP and UVP settings. 
When using local operation to set the current and voltage set points, use 
the coarse adjustment mode (default) followed by the fine adjustment 
mode (see next). The coarse adjustment mode quickly adjusts the 
settings in large increments to reach the desired value. 
Pressing the rotary Adjust/Enter control to change the mode to fine 
adjustment mode, provides the ability to manipulate the last significant 
digit. Once the exact desired value for the setting has been selected, press 
the rotary Adjust/Enter control to commit the value to the unit. 
 
Table 3-1  Select and Set from the Front Panel 
9 Positions on the Mode 
Control Knob 
Turning the rotary Adjust/Enter 
control lets you... 
Pressing the rotary Adjust/ 
Enter control lets you... 
VOLTS (Voltage 
Programming) 
Select the voltage set point in coarse 
or fine adjustment modes. See 
“Automatic Mode Crossover” on 
page 3-13. 
Set the value selected and cycle 
to the next setting. 
AMPS (Current Programming) 
Select the current set point in coarse 
or fine adjustment modes. See 
“Constant Current Mode Operation” 
on page 3-13. 
Set the value selected and cycle 
to the next setting. 
Select Foldback option: CC, CV or 
none. See “Setting Foldback Mode” 
on page 3-26. 
Set the value selected and cycle 
to the next setting. 
Select the OVP set point (see page 
3-29). Select the UVP set point (see 
page 3-31.) Select OTP temperature 
and Shutdown (see page 3-32.) 
Set the value selected and cycle 
to the next setting. 
Select the user setting memory 
location. See “Saving User Setting 
Memory Locations” on page 3-40. 
Save user setting memory 
values. 
Select the user setting memory 
location. See “Recalling User Setting 
Memory Locations” on page 3-41. 
Load user setting memory 
values into the power supply.