User manual

IEEE-488 Reference
4-128 2001-900-01 Rev. K / August 2010
21.05e920
42.1e520
:SYSTem:PRESet Same as *RST
Query :ULIMit? Query upper range limit
:ULIMit? DEFault Query *RST default upper limit
:ULIMit? MINimum Query lowest allowable upper limit
:ULIMit? MAXimum Query largest allowable upper limit
:LLIMit? Query lower range limit
:LLIMit? DEFault Query *RST default lower limit
:LLIMit? MINimum Query lowest allowable lower limit
:LLIMit? MAXimum Query largest allowable lower limit
Short-form formats: :curr:ac:rang:auto:ulim?
:curr:ac:rang:auto:ulim? xxx
:curr[:dc]:rang:auto:ulim?
:curr[:dc]:rang:auto:ulim? xxx
:volt:ac:rang:auto:ulim?
:volt:ac:rang:auto:ulim? xxx
:volt[:dc]:rang:auto:ulim?
:volt[:dc]:rang:auto:ulim? xxx
:res:rang:auto:ulim?
:res:rang:auto:ulim? xxx
:fres:rang:auto:ulim?
:fres[:dc]:rang:auto:ulim? xxx
:curr:ac:rang:auto:llim?
:curr:ac:rang:auto:llim? xxx
:curr[:dc]:rang:auto:llim?
:curr[:dc]:rang:auto:llim? xxx
:volt:ac:rang:auto:llim?
:volt:ac:rang:auto:llim? xxx
:volt[:dc]:rang:auto:llim?
:volt[:dc]:rang:auto:llim? xxx
:res:rang:auto:llim?
:res:rang:auto:llim? xxx
:fres:rang:auto:llim?
:fres[:dc]:rang:auto:llim? xxx
where; xxx = def, min or max
Response message: 0 to 1050000000
Description Automatic range changes take time and slow down the reading rate. By setting upper and lower
measurement range limits, you can prevent inadvertent range changes to ranges that you do not
want to use. As a result, you can speed up the reading rate while using autorange.
The upper range limit is selected by specifying the maximum expected reading that you expect
to measure. For example, if the maximum expected reading is approximately 100mA, let the
parameter (<n>) = 0.1 (or 100e-3). The lowest (most sensitive) range that can measure 100mA
is the 200mA range. Thus, the 200mA range will be selected as the upper range limit. With this
upper limit, the instrument cannot uprange to the 2A measurement range.