BK Precision 5335B, Руководство пользователя

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Harmonic Measurement Function
With the 100kHz bandwidth, the 5335B power meter can realize harmonic measurement of high speed and wide dynamic
range. The voltage, current, active power, reactive power, phase of harmonics and total harmonic distortion (THD)
factor can be tested in harmonic measurement mode. Display of harmonic parameters is either in list or bar chart form
for clear analysis of test results.
To enter this mode, select the button, and the initial harmonic measurement interface starts.
Parameter Description
V_RANGE Voltage range setting
A_RANGE Current range setting
RUN/HOLD Set the instrument to either “run” and continue measuring, or “hold” to freeze the measurements
RESET Clear measured values
FUNC(W/A/V) When in bar mode, rotate between viewing power, current, and voltage harmonic measurements
BAR
Display the bar chart mode
LIST Display the list mode
SETUP Enter the setup menu. See Section 6.3
Table 6.1 Harmonic Measurement Parameters
6.1 Bar Graph Mode
The bar chart, Figure 6.1 , is used for displaying the percentage of different harmonics. Enter this mode by pressing the
button (if not in the harmonic mode already), then select “BAR” from the on-screen soft-keys. Harmonics from 1
to 50 may be displayed at once. From the list of harmonics, Odd, Even or All harmonic subsets may be displayed. The
bar graph shows either the Power, Current, or Voltage harmonic components. Select the function by repeatedly pressing
the “FUNC” soft-key.
Figure 6.1 Bar Graph
On the bar graph display, individual harmonics may be selected by using the arrow keys or the rotary knob. Figure 6.2
shows the 9th harmonic of 62Hz. Also shown highlighted in cyan is the bar and measurements associated with that
particular harmonic (frequency, harmonic content, harmonic distortion factor and phase).