Figure 3-17. Klystron Frequency Chart and tuning Cavities.
are five columns of 3-digit numbers which are related to
cavity 1 by pushing the tuning knob lock to the left.
the five cavity tuning knobs and windows below the chart.
Rotate the cavity tuning knob to the assigned tuning
The cavity tuning numbers (in this example) for 8225
number (715). Always approach this number from a
MHz are as follows:
clockwise direction and starting about 100 digits below it.
(each klystron has an applicable chart).
For example, rotate the cavity tuning knob to 615 (from
either direction) then rotate the knob clockwise up to
715. Lock the tuning knob for cavity 1.
Repeat step f above for cavities 2, 3, 4
3-digit tuning no.
and 5. The klystron is now tuned to the assigned
Close and secure the KLYSTRON
On the associated upconverter check
that the POWER circuit breaker is in the ON position.