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D-500 MK2 User Manual
11. WAVEFORM DISPLAY & HARMONIC ANALYSIS
The unit features waveform display together with a precision harmonic analyzer for both mains and
genset voltages and currents. Both phase to neutral and phase to phase voltages are available for
analysis, thus 18 channels in total are possible.
In order to enable display and analysis of mains currents, current
transformers must be placed at load side.
Available channels are:
Mains volts: V1, V2, V3, U12, U23, U31
Mains currents: I1, I2, I3
Genset volts: V1, V2, V3, U12, U23, U31
Genset currents: I1, I2, I3
The waveform display memory is of 100 samples (320 samples in color version) length and 13 bit
resolution, with a sampling rate of 4096 s/s. Thus one cycle of a a 50Hz signal is represented with 82
points (164 points in color version). The vertical scale is automatically adjusted in order to avoid clipping
of the signal.
The waveform is displayed on the device screen, and with more resolution, on PC screen through the
RainbowPlus program.
The display memory is also available in the Modbus register area for third party applications. For more
details please check chapter "MODBUS Communications".
The waveform display is updated twice a second. All channels may be scrolled using
Scopemeter Display
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Firmware V-6.3
buttons.
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