Figure 3. Adjustment locations

Calibration Procedure For Oscilloscope Type 434 Page Navigation
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TB 9-6625-2117-24

b. Adjustments

(1) Adjust R461 and C461 (fig. 1) for flat front portion of waveform top (R).

(2) Decrease TIME DIV MAG switch settings as necessary and adjust C572 (fig. 1)

for maximum overshoot (R).

(3) Adjust L533 (fig. 3), C217, C226, R461, and C461 (fig. 1) for a flat front corner of

waveform top with some aberrations behind front corner (R).

Figure 3. Adjustment locations - top view.

(4) Adjust L584 (fig. 3) for minimum aberrations behind front corner (R).

(5) Check waveform at various sweep speeds for flat top and square corners. If

necessary repeat b (3) above for maximum risetime and minimum aberrations (R).