TB 9-4931-700-50
(14) Connect variable capacitor across TI output (connect at isolation box, using
cable). Set variable capacitor dial to 50 pF.
(15) Connect oscilloscope (A7) to A6TP2 (fig. 7), using probe (B11).
(16) Position TI controls as listed in (a) through (d) below:
(a) FREQUENCY RANGE X10K pushbutton pressed.
(b) FREQUENCY control to obtain FREQ scale indication of 101.
(c) Voltage controls to obtain indication of 100.000 V.
(d) OUTPUT ON pushbutton pressed.
(17) Adjust (increase) TI output in 100 V steps to 700 V or until a glitch appears on
waveform as shown in figure 8.
(18) If no glitch appears, adjust (increase) capacitance of variable capacitor until it
does appear. After glitch appears, adjust A6C18 (fig. 7) until waveform becomes clear
and then another glitch appears. Note range of A6C18 between points where glitches
appear.
(19) Adjust (increase) capacitance of variable capacitor and adjust A6Cl8 until
range as noted in (15) above is minimum (R).
(20) Connect ac/dc voltmeter to A6TP6 (fig. 7) (same as V3 RED) and circuit
ground, using leads supplied with ac/dc voltmeter.
(21) Adjust A6R77 (fig. 7) to obtain indication of 1800 V dc on ac/dc voltmeter (R).
(22) Adjust variable capacitor for 100 pF.
(23) Adjust TI output from 700 V to 100 V. The oscilloscope will not show signs of
oscillations.
(24) Set voltage controls to obtain indication 700.000 V and adjust frequency from
110 to 10 kHz. If oscilloscope indication is not smooth with no oscillations, repeat (7)
through (20) above.
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