Keithley DMM7510, Справочное руководство

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Section 2: General operation Model DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual
2-32 DMM7510-901-01 Rev. B / May 2015
Capacitance measure settings
The following options are available on the Measure Settings menu when the function is set to
capacitance.
Setting Description
Range
Determines the full-scale input for the measurement; also affects
the accuracy of the measurements and the maximum signal that
can be measured. Refer to
Ranges (on page 3-3).
Auto Delay
Applies a wait period at the start of measurement to allow cables
and circuitry to settle for best accuracy. Refer to
Auto Delay (on
page 2-137).
Display Digits
Sets the number of digits that are displayed for front-panel
readings. It does not affect accuracy or speed. Refer to
Setting the
number of displayed digits (on page 2-55). Fixed at 4.5 digits for
capacitance.
Count
Sets the number of aperture readings that are processed when a
measurement is requested.
DC voltage ratio measure settings
The following options are available on the Measure Settings menu when the function is set to DCV
Ratio.
Setting Description
Range
Determines the full-scale input for the measurement in the
numerator of the ratio. The range also affects the accuracy of the
measurements and the maximum signal that can be measured.
Refer to
Ranges (on page 3-3).
Auto Delay
Applies a wait period at the start of measurement to allow cables
and circuitry to settle for best accuracy. Refer to
Auto Delay (on
page 2-137).
Display Digits
Sets the number of digits that are displayed for front-panel
readings. It does not affect accuracy or speed. Refer to
Setting the
number of displayed digits (on page 2-55).
Sense Range
Determines the full-scale input for the reference measurement in
the denominator of the ratio. It also affects the accuracy of the
measurements and the maximum signal that can be measured.
Autorange is automatically set to off if a specific value is set.
Integration Rate
Controls the amount of time the input signal is measured
(aperture), which affects the noise and reading rate; see
Using
aperture or NPLCs to adjust speed and accuracy (on page 4-1).
Auto Zero
Determines if internal reference points are used to maintain
stability and accuracy. See
Automatic reference measurements (on
page 2-149).
Count
Sets the number of aperture readings that are processed when a
measurement is requested.
Line Sync
Enables or disables line synchronization. When it is enabled, it
helps increase common-mode and normal-mode noise rejection.
Refer to
Line cycle synchronization (on page 4-1).