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MI 2792A PowerQ4 Plus
Operating the instrument
Show voltage and current waveform (single mode);
Show voltage and current waveform (dual mode).
Select between phase, neutral, all-phases and line view:
Show waveforms for phase L1;
Show waveforms for phase L2;
Show waveforms for phase L3;
Show waveforms for neutral channel;
Summary of all phases waveforms;
Show phase-to-phase voltages.
Switch to METER view.
Switch to SCOPE view.
Select which waveform to zoom (only in U/I or U+I).
Set vertical zoom.
Set horizontal zoom.
Return to the “WAVEFORM RECORDER” setup screen.
3.10.3 Captured waveform
Captured waveform can be viewed from the Memory list menu. Following views are available for the waveform record:
U,I,f meter table screen,
U,I,f screen,
U,I,f RMS trend screen.
Figure 3.35: Captured waveform meter screen
Table 3.44: Instrument screen symbols and abbreviations – METER
RMS
Show currently displayed channel.
Show record number in MEMORY LIST.
Current instrument time.
True effective value U
Rms(10)
and I
Rms(10).
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MI 2792A PowerQ4 Plus
THD
CF
PEAK
MAX 1/2
MIN 1/2 f
Operating the instrument
Total harmonic distortion THD
U
Crest factor Cf
U
and Cf
I.
and THD
I.
I
Peak value U
Pk
and I
Pk.
Maximal U
½RmsMax
Rms(1/2)
voltage U
Rms(1/2)Max
and maximal I
½Rms
current,
measured from last RESET (key: F2).
Minimal U
Rms(1/2) voltage U
Rms(1/2)Min
and minimal I
½Rms
current I
½RmsMin
, measured from last RESET (key: F2).
Frequency on reference channel.
Table 3.45: Keys functions - METER
Show measurements for phase L1
Show measurements for phase L2
Show measurements for phase L3
Show measurements for neutral channel
Summary of all phases measurements
Show phase-to-phase voltages measurements
Switch to METER view.
Switch to SCOPE view
Switch to TREND view (available only during recording)
Return to the “WAVEFORM RECORDER” setup screen.
Figure 3.36: Captured waveform scope screen
Table 3.46: Instrument screen symbols and abbreviations - SCOPE
U1, U2, U3,
Un, U12,
U23, U31
Current instrument time.
Show record number in MEMORY LIST.
True effective value of voltage – U
Rms(10).
I1, I2, I3, In True effective value of current – I
Rms(10).
Thd f
Total harmonic distortion THD
U
and THD
I.
Frequency on reference channel.
Time scale at beginning and the end of the scope screen
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MI 2792A PowerQ4 Plus
Operating the instrument
Voltage/current scale and the top/bottom of the scope screen
Cursor position time.
Table 3.47: Keys functions - SCOPE
Zoom in.
Zoom out.
Select between the following signals:
Show voltage waveform;
Show current waveform;
Show voltage and current waveform in single graph;
Show voltage and current waveform in two separate graph.
Show measurement for phase L1
Show measurement for phase L2
Show measurement for phase L3
Show measurement for neutral channel
Summary of all phases measurements
Show phase-to-phase voltages measurements
Switch to RMS TREND view.
Select which waveform to zoom vertically (only in U/I or U+I graphs).
Set vertical zoom.
Move cursor position.
Return to the “WAVEFORM RECORDER” setup screen.
Figure 3.37: Captured waveform RMS trend screen
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