Keithley 3700 series Reference Manual page 214

Section 9: Instrument Control Library (ICL)
dmm.adjustment.date
Example
dmm.aperture
Attribute
Usage
Remarks
Also see
9-70
Also see usage for setting date.
NOTE For following assume set date to July 4, 2007.
To query date and format the response as mm/dd/yyyy:
print(os.date("%m/%d/%Y",
dmm.adjustment.date))  07/04/2007
To query date and format the response as mm/dd/yy:
print(os.date("%x",
dmm.adjustment.date))  07/04/07
Indicates the aperture setting for the active DMM function in seconds.
To read the aperture:
value = dmm.aperture
value: Represents the present aperture setting in seconds
To write the aperture:
dmm.aperture = value
value: Represents the desired aperture:

For 50Hz, the range is 10e-6 to 0.250 second.

For 60Hz, the range is 8.33e-6 to 0.250 second.

For frequency and period, 0.01 to 0.273 second.
This is the aperture setting for the DMM and it applies to the selected function as
indicated by dmm.func (on page 9-91). Querying the aperture when the selected
function does not have an aperture associated with it will cause nil to be returned.
An error is generated if a command is received when
―continuity‖ or ―nofunction‖.
Changing functions with
If the detector bandwidth
for ―acvolts‖ or ―accurrent‖, then an error message will be generated when trying to set
the aperture for these functions. The detector bandwidth setting is one of three values
(based on input parameter): 3, 30, or 300.
Input parameter
< 30
Between 30 and 300
 300
dmm.func (on page 9-91)
dmm.nplc (on page 9-105)
Series 3700 System Switch/Multimeter Reference Manual
dmm.func (on page 9-91) has no effect on this setting.
(dmm.detectorbandwidth
Converted value
3
30
300
Document Number: 3700S-901-01 Rev. A / August 2007
dmm.func (on page 9-91) =
(on page 9-85)) setting is 30 or less