User`s guide

2- 56 Agilent EasyEXPERT User’s Guide Vol. 1, Edition 1
Classic Test Definition
Range Setup Window
Range Change
Rule and Rate
Not available for voltage measurement or fixed ranging. See
also
“Enhanced Auto Ranging for Current Measurement” on
page 4-58.
Available Range Change Rule values are BY FULL RANGE,
GO UP AHEAD, and UP AND DOWN AHEAD.
BY FULL RANGE performs normal auto ranging operation.
For the GO UP AHEAD and UP AND DOWN AHEAD rules,
specify the Rate value, 11 to 100, which fixes the boundary of
the ranging. The ranging occurs when the measurement data
goes across the boundary values shown below.
go up boundary = present measurement range  Rate / 100
go down boundary = present measurement range  Rate / 1000
The go down boundary is available only for the UP AND
DOWN AHEAD rule.
Up Moves the selected measurement channel setup upward.
Down Moves the selected measurement channel setup downward.
If multiple measurement channels are defined, the channels perform measurement
sequentially. The order is top to bottom of the channels defined in
SMU
Measurement Range. For exceptions and details, see “Multiple Measurement
Channels” on page 4-69.
NOTE To use 1 pA range, only for B1500A
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.
The B1500A 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, perform the self-calibration before starting the
measurement for a DUT. This offset data is temporarily memorized until the
B1500A is turned off.