User manual

Front Panel Operation
2001-900-01 Rev. K/ August 2010 3-31
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 paragraph 3.4.1,
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.
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CONFIGURE ACI menu structure
Menu item Description
SPEED
NORMAL
FAST
MEDIUM
HIACCURACY
SET-SPEED-EXACTLY
SET-BY-RSLN
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.
FILTER
AUTO
AVERAGING
ADVANCED
AVERAGING-MODE
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.
RESOLUTION
AUTO
3.5d, 4.5d, 5.5d, 6.5d, 7.5d
Display resolution menu:
Default to resolution appropriate for integration time.
Select a specific resolution.
COUPLING
AC
AC+DC
Coupling menu:
Select AC coupled measurements.
Select DC coupled measurements.
AC-TYPE
RMS
AVERAGE
Type of ACI measurement menu:
Select true RMS ACI.
Select average ACI.
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DCI and ACI integration time set-by-resolution
Measurement
function and type Resolution Integration time
DC current 3.5d, 4.5d
5.5d
6.5d
7.5d
0.01 PLC
0.02 PLC
0.20 PLC
2.00 PLC
DC in-circuit current 3.5d to 7.5d Not used
RMS, average 3.5d, 4.5d
5.5d
6.5d, 7.5d
0.01 PLC
0.02 PLC
10.00 PLC
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.