Interactive SourceMeter® Instrument Reference Manual Section 6:
2450-901-01 Rev. B/September 2013 6-75
Details
This command manually selects the measurement range for the specified source.
If you select a specific source range, the range must be large enough to source the value. If not, an overrange
condition can occur.
If an overrange condition occurs, an event is displayed and the change to the setting is ignored.
The fixed current source ranges are 10 nA, 100 nA, 1 µA, 10 µA, 100 µA, 1 mA, 10 mA, 100 mA, and 1 A.
The fixed voltage source ranges are 20 mV, 200 mV, 2 V, 20 V, and 200 V.
When you read this value, the instrument returns the positive full-scale value that the instrument is presently
using.
This command is intended to eliminate the time required by the automatic range selection.
To select the range, you can specify the approximate source value that you will use. The instrument selects the
lowest range that can accommodate that level. For example, if you expect to source levels around 50 mV, send
0.05 (or 50e-3) to select the 200 mV range.
If automatic range selection is set to on, when you select a specific range, automatic is set to off. To
set the range to automatic selection, use the source autorange command.
Example
Send this command to source levels around
3 V. This example selects the 20
V range for
the voltage source.
Also see
:SOURce[1]:<function>:RANGe:AUTO (on page 6-75)
:SOURce[1]:<function>:RANGe:AUTO
This command determines if the range is selected manually or automatically for the selected source function.
Type Affected by Where saved Default value
Instrument reset
Power cycle
Source configuration list
Source configuration list
Usage
:SOURce[1]:CURRent:RANGe:AUTO <b>
:SOURce[1]:CURRent:RANGe:AUTO?
:SOURce[1]:VOLTage:RANGe:AUTO <b>
:SOURce[1]:VOLTage:RANGe:AUTO?
Disable automatic range: 0 or OFF
Enable automatic range: 1 or ON
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