Keysight Technologies E5260 Series, Programming Manual

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4- 12 Keysight E5260/E5270 Programming Guide, Edition 4
Command Reference
Command Parameters
NOTE
Measurement Ranging (Auto and Limited auto)
The instrument automatically selects the minimum range that covers the
measurement value, and performs the measurement by using the range. For the
limited auto ranging, the instrument does not use the range lower than the specified
range value. For example, if you select the 100 nA limited auto ranging, the
instrument never uses the 10 nA range and below.
NOTE
Before using 1 pA range (only for E5270B)
The measurement channel connected to the ASU (Atto Sense and Switch Unit)
supports the 1 pA range. To use the 1 pA range, set the 1 pA fixed range or the 1 pA
limited auto ranging.
To enable the 1 pA range for the auto ranging mode, execute the SAR command.
The E5270B automatically performs the compensation of the data measured by the
1 pA range and returns the compensated data. You can use either the pre-stored
offset data or the pre-measured offset data.
To measure the offset data, execute the CA command before starting the
measurement for a DUT. This offset data is temporarily memorized until the
E5270B is turned off.
NOTE
Output Ranging
The instrument automatically selects the minimum range that covers the output
value, and applies voltage or current by using the range. For the limited auto
ranging, the instrument does not use the range lower than the specified range value.
For example, if you select the 100 nA limited auto ranging, the instrument never
uses the 10 nA range and below.