17-16
IM DLM3054-01EN
• Measurement Items of Current Input Channels CH2 and CH4
Current: I+pk, I−pk, Ip-p, Irms, Idc, Iac, Imn, Irmn
Average frequency: Avg Freq
Ampere hours: q, q+, q−, Abs.q
For details on how each item is determined, see appendix 5.
• The maximum number of measurement items that can be displayed is 30 including the automatically
measured waveform parameters. If the measured power values are not displayed, reduce the number of
automatically measured waveform parameters.
• For input channels that are assigned to power measurement and whose mode is set to ON, the following
waveform parameters cannot be set: Max, Min, P-P, Rms, Mean, Sdev, Avg Freq. This is because these
parameters overlap with those of the power measurement parameters, and the power measurement
parameters are used in their place.
If you select any of the power measurement item U+pk, U−pk, Up-p, Urms, Udc, Uac, Avg Freq, I+pk, I−pk,
Ip-p, Irms, Idc, Iac, and Avg Freq check boxes, the corresponding input channel waveform parameter Max,
Min, P-P, Rms, Mean, Sdev, or Avg Freq check boxes will be selected.
Reference Levels (Ref Levels)
To determine the average frequency (Avg Freq), set the reference levels (distal, mesial, proximal) for each of
the input channels as percentages or voltages. This feature is the same as the reference level of the automated
measurement of waveform parameters.
• If you set the reference levels using percentages, the distal, mesial, and proximal voltage values are
determined depending on the waveform.
• If you want to set reference levels that do not change based on the waveform, set the levels as voltage
values.
• Changing the reference level settings here will also change the reference level settings for the automated
measurement of waveform parameters.
Measurement Location Indicator (Indicator)
Indicates the measured location of a specified item using cursors. You can select one item from the power
measurement items whose check boxes are selected.
Cycle Mode (Cycle Mode)
OFF: Sets the measurement time range between T Range1 and T Range2.
N Cycle: Sets the time range to the left end of the first period that is between T Range1 and T Range2 to the
right end of the Nth period
Calculation (Calc Setup)
You can define four calculations (Calc1 through Calc4) that use the measured power values. This feature is the
same as the calculation of the automated measurement of waveform parameters. However, the measurement
items that you can select from the Measure menu of the displayed expression dialog box are power
measurement items.
17 Power Supply Analysis Feature (Power Analysis and Power Measurement, Option)