5-6
IM 2558A-01EN
5.3 Selecting the Voltage or Current Range
Procedure
Turn the
RANGE
dial to set the voltage or current range.
The indicator for the selected range illuminates.
Example: 10 V
Voltage range
Current range
Selects the voltage or current range
Explanation
The selectable range and resolution vary depending on the specified range.
For details on the function, see section 2.2.
Voltage Range
Range
Selectable range
1
Resolution
100 mV
0 mV to 120.00 mV
0.01 mV
1 V
0 V to 1.2000 V
0.0001 V
10 V
0 V to 12.000 V
0.001 V
100 V
0 V to 120.00 V
0.01 V
300 V
0 V to 360.0 V
0.1 V
1000 V
0 V to 1200.0 V
0.1 V
1 Generates 144% of the range when used with deviation (–20%)
Current Range
Range
Selectable range
1
Resolution
100 mA
0 mA to 120.00 mA
0.01 mA
1 A
0 A to 1.2000 A
0.0001 A
10 A
0 A to 12.000 A
0.001 A
50 A
0 A to 60.00 A
0.01 A
1 Generates 144% of the range when used with deviation (–20%)
If you select the 300 V or 1000 V range, the HIGH VOLTAGE indicator will illuminate even if the
voltage or current output is off.
The voltage and current ranges are fixed. The 2558A does not have an auto range feature.
When the power is turned on, the setting that was used previously is restored.
If you change the voltage or current range when the output is on, the output automatically turns off.
The ratio of the main setting value to the voltage or current range is passed on to the main setting
value even after you change the voltage or current range.
Example: If the main setting is 0.5 V (50%) at the 1 V voltage range and you change the voltage range
to 10 V, the main setting value will be 5 V.
<<Command Mnemonic>>
:SOURce:FUNCtion {VOLTage|CURRent}
:SOURce:RANGe {<
Voltage
>|<
Current
>}
