HC3
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User Manual
Rev. 1.0L - 16/05/01
8.2
System Compensation
1) On the coupler instrument, select the forward power measurement mode.
2) Remove the coupler’s upper cover.
3) Set the desired system working frequency on the exciter.
4) Set the output power of the exciter so that the system output forward power is
at 80% of the nominal value.
5) Regulate all the variable capacitors to their middle position (Figure 9.1).
Figure 9.1
6)
Adjust the variable capacitors (1) and (2), relative to the first amplifier output
(Figure 4), to maximize the power level measured by the coupler’s instrument.
Figure 9.2