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Fluke 1777 Manual

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Users Manual
32
Harmonics Grouping
The Harmonic Grouping selection at the bottom of the screen allows for a different method of
harmonics representation. The listed standards most frequently recommend Subgrouped
harmonic.
Note
Fluke recommends the Subgrouped setting unless there are special circumstances
why the other methods are applicable for the required test. A change to this grouping
method could lead to inconsistent results when making comparisons of other
measurements made at the same or other locations.
Select Done to exit the Harmonics Grouping screen.
Mains Signaling
Mains signaling, or ripple control, is a technique used by utilities to instruct revenue meters to
switch tariffs, turn on street lighting, or turn on other loads. The mains signaling selection
enables capture of two signal frequencies other than the system frequency. The frequencies
must be specified in the setup and between 110 Hz and 1600 Hz.
To set the Mains Signaling voltage:
1. Enter the value in the Frequency 1 and Frequency 2 fields.
After you enter the frequency, the Enable radio button is automatically checked as active.
2. Tap Done.
This measurement is increasingly rare. If you do not need this information, ignore the setup.
The selection is switched off as a default.
Note
See the Glossary for more information about these configuration effects and details of
the triggering mechanisms.
AUX
The auxiliary, or analog, inputs are dc inputs that have a physical socket on top of the Analyzer
reserved for ±10 V dc signals. These signals may be from transducers that output voltage or
current. Each analog input signal can be labeled to describe the signal along with the
applicable engineering units, such as V dc, V ac, I ac, °C, or Nm. Select a gain and an offset to
scale the 0 V to 10 V signal so that the display shows the correct values.
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