Manual

Table Of Contents

3.4.6 Manual adjustment of set values

The set values for voltage, current and power are the fundamental operating possibilities of a power supply and hence the

two rotary knobs on the front of the device are always assigned to two of the values in manual operation.

The resistance value is connected to the “R mode” which has to be activated separately, for instance via the quick menu. Refer

“3.4.3. Conguration via the menu”

as well as

“3.2.4. Resistance regulation / constant resistance”

for details.

Set values can be entered manually in two ways, via rotary knob or direct input. While the rotary knobs adjust values con-

tinuously, entering them via numeric pad can be used to change values in bigger steps.

Changing a value is immediately submitted, no matter if the DC input is switched on or off.

When adjusting set values, upper and lower limits may come into effect. See section “3.4.4. Adjustment

limits”. Once a limit is reached, the display will show a small note like “Limit: U-max” etc. for a short time

in proximity to the adjusted value.

► How to adjust set values U, I, P or R with the rotary knobs

1. First check if the value you want to change is already assigned to one of the rotary knobs. The

main screen displays the assignment as depicted in the gure to the right.

2. If, as shown in the example, the assignment is voltage (U, left knob) and current (I, right knob),

and it’s required to set the power, then the assignment of the right-hand knob can be changed

by tapping on its depiction until it shows “P”. In the left-hand display area the set values of

power would then be shown as selected.

3. After successful selection, the desired value can be set within the dened limits. Selecting the next digit is done by

pushing the rotary knob which shifts the cursor from right to left (selected digit will be underlined):

► How to adjust values via direct input:

1. In the main screen, depending on the rotary knob assignment, values can be set

for voltage (U), current (I), power (P) or resistance (R) via direct input by tapping

on one of the small ten-key pad symbols, for example the one in the blue area if

you wanted to adjust the voltage.

2. Enter the required value using the ten-key pad. Similar to a pocket calculator

the key clears the input. Decimal values are set by tapping the

point key. For example, 54.3 V is entered with and

3. Unless the new values isn’t rejected for some reason, the display would then

switch back to the main page and the set value would be submitted to the DC

input.

Upon entering a value which exceeds the corresponding limit, a note would pop up, the value in the frame

reset to 0 and not be accepted and submitted.