Keithley 2001 Operator's Manual page 63

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CONFIGURE ACI menu structure
Menu item
SPEED
NORMAL
FAST
MEDIUM
HIACCURACY
SET-SPEED-EXACTLY
SET-BY-RSLN
FILTER
AUTO
AVERAGING
ADVANCED
AVERAGING-MODE
RESOLUTION
AUTO
3.5d, 4.5d, 5.5d, 6.5d, 7.5d
COUPLING
AC
AC+DC
AC-TYPE
RMS
AVERAGE
SPEED
The SPEED parameter sets the integration time of the A/D
converter, the period of time the input signal is measured
(also known as aperture). It is discussed in
DC and AC voltage. Only the differences for DC and AC
current are noted here.
The SET-BY-RSLN parameter optimizes the integration
time for the present resolution setting. The defaults for set-
by-resolution integration times of DCI and ACI are listed in
Table 3-13.
2001-900-01 Rev. K/ August 2010
Description
Measurement speed (integration time) menu:
Select 1 PLC (power line cycle, 16.67msec for 60Hz, 20msec for 50Hz and 400Hz).
Select 0.01 PLC.
Select 0.1 PLC.
Select 10 PLC.
Set integration time in PLC (0.01-10).
Default to setting appropriate for resolution.
Digital filter menu:
Default to filter appropriate for integration time.
Program a simple average filter (1-100 readings).
Program a simple average filter (1-100 readings) with a noise tolerance window
(0-100% of range).
Select moving average or repeating average mode.
Display resolution menu:
Default to resolution appropriate for integration time.
Select a specific resolution.
Coupling menu:
Select AC coupled measurements.
Select DC coupled measurements.
Type of ACI measurement menu:
Select true RMS ACI.
Select average ACI.
paragraph 3.4.1,
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DCI and ACI integration time set-by-resolution
Measurement
function and type Resolution
DC current 3.5d, 4.5d
5.5d
6.5d
7.5d
DC in-circuit current 3.5d to 7.5d
RMS, average 3.5d, 4.5d
5.5d
6.5d, 7.5d
Notes:
1. For normal DC current, if the integration time is SET-BY-RSLN
and the resolution is AUTO, the integration time will be 1.0 PLC
and the resolution 6.5 digits.
2. For DC in-circuit current, the integration time setting is ignored.
3. For AC current, if the integration time is SET-BY-RSLN and the
resolution is AUTO, the integration time will be 1.0 PLC and the
resolution 5.5 digits.
Front Panel Operation
Integration time
0.01 PLC
0.02 PLC
0.20 PLC
2.00 PLC
Not used
0.01 PLC
0.02 PLC
10.00 PLC
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