Keithley DMM7510, Справочное руководство

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Section 2: General operation Model DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual
2-26 DMM7510-901-01 Rev. B / May 2015
DC current measure settings
The following options are available on the Measure Settings menu when the function is set to DC
current.
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).
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).
AC current measure settings
The following options are available on the Measure Settings menu when the function is set to AC
current.
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).
Detector Bandwidth
Sets the detector bandwidth. Refer to Detector bandwidth (on page
2-140).
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).
For detector bandwidths of 3 Hz or 30 Hz, the setting is fixed to
16.67 ms (1 PLC).
Auto Zero
Determines if internal reference points are used to maintain
stability and accuracy. See
Automatic reference measurements (on
page 2-149). For detector bandwidths of 3 Hz or 30 Hz, this setting
is always on.
Count
Sets the number of aperture readings that are processed when a
measurement is requested.
Line Sync
Line cycle synchronization is always off for AC current
measurements.