User Manual

Chapter 7

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 name Parameter descriptions

V_RANGE Voltage range setting

A_RANGE Current range setting

RUN/HOLD

Set the instrument to either “run” and continue mea-

suring, or “hold” to freeze the measurements

RESET Clear measured values

FUNC(W/A/V)

When in bar mode, rotate between viewing power, cur-

rent, and voltage harmonic measurements

BAR Display the bar chart mode

LIST Display the list mode

SETUP Enter the setup menu. See Section 7.3

Table 7.1: Harmonic Measurement Parameters

7.1 Bar Graph Mode

The bar chart is used for displaying the percentage of dierent 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.

On the bar graph display, individual harmonics may be selected by using the arrow keys or the rotary knob.

Figure 7.2 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).