Series 3700 System Switch/Multimeter Reference Manual
Section 9
:
Instrument Control Library (ICL)
Document Number: 3700S-901-01 Rev. A / August 2007
9-85
dmm.dbreference
Remarks
This is the DB reference setting for the DMM and it applies to the selected function as
indicated by dmm.func. Querying this setting when the selected function does not support
it will cause nil to be returned.
Command only applies when dmm.func = ―dcvolts‖ or ―acvolts‖. For all other functions an
error will be generated if this command is received. Also, an error will be generated if the
value is out of range.
Changing functions with
dmm.func
(on page 9-91) has no effect on this setting.
Example
To set the DB reference to 5 volts for DC volts:
dmm.func = "dcvolts"
dmm.dbreference = 5
dmm.detectorbandwidth
Attribute
Indicates the detector bandwidth setting for the DMM in Hertz.
Usage
To read the detector bandwidth:
value = dmm.detectorbandwidth
value
: Represents the present detector bandwidth setting in Hertz
To write the detector bandwidth:
dmm.detectorbandwidth = value
value: Represents the desired detector bandwidth in Hertz (3 to 300). Values less than
30, the parameter is adjusted to 3. Values between 3 and 300, the parameter is adjusted
to 30. For values greater than 300, the parameter is adjusted to 300.
Remarks
This is the AC detector bandwidth setting for the DMM and it applies to the selected
function as indicated by dmm.func. Querying the aperture when the selected function
does not have a detector bandwidth setting associated with it will cause nil to be
returned.
Command only applies when dmm.func = ―acvolts‖ or ―accurrent‖. For all other functions
an error will be generated if this command is received. Also, an error will be generated if
the value is out of range. The default setting for both functions is 30.
Changing functions with
dmm.func
(on page 9-91) has no effect on this setting.
When trying to set the aperture for functions with
dmm.aperture
(on page 9-70) attribute,
if the detector bandwidth setting is 30 or less, an error message will be generated.
Example
To set the detector bandwidth to 100 Hertz for AC volts:
dmm.func = "acvolts"
dmm.detectorbandwidth = 100