7½ Digit Graphical Sampling Multimeter Reference Manual Section 8:
DMM7510-901-01 Rev. B / May 2015 8-83
dmm.digitize.aperture
This attribute determines the aperture setting for the selected function.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes
Restore configuration
Instrument reset
Power cycle
Measure configuration list
Configuration script
Measure configuration list
0 (Auto)
Usage
time = dmm.digitize.aperture
dmm.digitize.aperture = time
The time of the aperture in seconds or automatic:
• Range: 1 µs to 1 ms; set in 1 µs increments
•
Automatic: 0 or dmm.APERTURE_AUTO
Functions
dmm.FUNC_DIGITIZE_CURRENT
dmm.FUNC_DIGITIZE_VOLTAGE
Details
The aperture determines how long the instrument makes measurements. The aperture is set to
automatic or to a specific value in 1 µs intervals.
The aperture is the actual acquisition time of the instrument on the signal. It must be less than the set
sample rate. The minimum aperture is 1 µs when the maximum sampling rate is 1,000,000 samples
per second.
When the aperture is set to automatic, the aperture is equivalent to the sample rate interval.
If you specify an aperture and the value is less than 1 µs, it is rounded down to the nearest micro
second resolution.
If you set a value that is longer than the sample rate interval, the instrument generates an error event.
Set the sample rate before changing the aperture.
The maximum aperture available is 1 divided by the sample rate. The aperture cannot be set to more
than this value.
When automatic is selected, the aperture setting is set to the maximum value possible for the
selected sample rate.
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