4.21-8 Section 4: Using the Model 9100: AC Harmonics Function - Operation
Final Width = 215mm
4.21.4 Value Editing
4.21.4.1 Amplitude Editing
Output values can be changed using ‘Digit’ and ‘Direct’ edit facilities as described in
Section 3.
Editing of the Auxiliary channel amplitude normally varies the current source, but its
operating mode can be modified to provide an auxiliary voltage source (although still
displayed as a current), or allow the selection of current coils which can be used to boost
the effective current output as described in Section 4.21.3.
4.21.4.2 Frequency and Phase Editing
Frequency and Internal Phase-Shift Ø values can be changed using ‘Digit’ and ‘Direct’
edit facilities. The general rules for editing processes are described in Section 3.
Ø is the internal phase angle of I or Aux V – i.e. the Harmonic relative to V. It defines
the 0° starting point of the first harmonically related waveform relative to the 0° point
of the fundamental (Main channel). The actual phase shift at the fundamental frequency
is the displayed value/nn, where nn is the chosen harmonic.
4.21.4.3 ‘Out of Range’
Any attempt to select a combination of voltage and frequency (including the application
of deviations and/or offsets) outside the constraints of the Volt.Hertz profile will not be
implemented.
Several user inputs may result in exceeding these constraints.
Exceeding some part of the operating envelope will cause an audible warning to be given,
accompanied by a screen message: 'Out of range'. Refer also to Section 4.4.6.
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