User manual

Section 13: Instrument Control Library (ICL) Series 3700 System Switch/Multimeter Reference Manual
13-114 3700S-901-01 Rev. C / July 2008
dmm.autorange
Attribute
Indicates the auto range setting for the active DMM function.
Usage
To read the auto range:
value = dmm.autorange
value: Represents the present auto range setting (1 = ON, 0 = OFF).
To write the auto range:
dmm.autorange = value
value: Represents the desired auto range setting. Use one of the following:
dmm.ON or 1: Enables auto ranging.
dmm.OFF or 0: Disables auto ranging.
Remarks
This is the auto range setting for the DMM. It applies to the selected function as
indicated by dmm.func (on page 13-137). Querying the auto range when the selected
function does not have an auto range associated with it will cause nil to be returned.
An error is generated if command is received when dmm.func = "temperature",
"frequency", "period", "continuity" or "nofunction". Also, an error will be generated if the
value is out of range.
Changing functions with dmm.func (on page 13-137) reflects the autorange setting for
that function.
The default setting is dmm.ON.
Example
To enable auto ranging for 2-wire ohms:
dmm.func = "twowireohms"
dmm.autorange = dmm.ON
dmm.autozero
Attribute
Indicates the auto zero setting for the active DMM function.
Usage
To read the auto zero status:
value = dmm.autozero
value: Represents the present auto zero setting (1 = ON, 0 = OFF)
To change the auto zero status:
dmm.autozero = value
value: Represents the desired auto zero. Use one of the following:
dmm.ON or 1 to enable auto zero
dmm.OFF or 0 to disable auto zero
dmm.AUTOZERO_ONCE or 2 to refresh backgrounds once and go to auto zero off
setting (0 will be returned if auto zero status is read).