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ELR 9000 Series
3.4.6 Manual adjustment of set values
The set values for voltage, current, power and resistance are the fundamental operating possibilities of an elec-
tronic load and hence the two rotary knobs on the front of the device are always assigned to two of the four values
in manual operation. Default assignment is power and current.
The set values can be entered manually in two ways: via rotary knob or direct input.
Entering a value changes it at any time, whether the input is switched on or off.
When adjusting the set values, upper or lower limits may come into effect. See section „3.4.4.
Adjustment limits“. Once a limit is reached, the display will show a note like “Limit: U-max” etc.
for 1.5 seconds next to the adjusted value.
►
How to adjust values 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 figure to the right.
2.
If, as shown in the example, the assignment is voltage (U, left) and current (I, right),
and it is required to set the power, then the assignments can be changed by tapping
this touch area. A set of selection fields then appears.
3.
After successful selection, the desired value can be set within the defined limits.
Selecting a 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 the small keypad symbol in the the set/actual
value display areas, e.g in the uppermost area of 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 set with
and
.
3.
The display reverts to the main page and the set values take effect.
If a value is entered which is higher than the adjustment limit, a message appears and the
entered value is reset to 0 and not accepted.
