TB 9-6625-2050-35
(7) Set range calibrator FUNCTION switch to CALIBRATE.
(8) Position oscilloscope controls as listed in (a) through (e) below:
(a) MODE CH 1 and CH 2 selected.
(b) CHOP/ALT button selected for CHOP vertical display mode.
(c) CH 1 VOLTS/DIV to 0.05 V/div and AC coupled.
(d) CH 2 VOLTS/DIV to 0.2 V/div and AC coupled.
(e) SEC/DIV to 0.5 ms/div.
(9) Adjust oscilloscope and range calibrator controls to superimpose waveforms as
shown in figure 4, using procedure in (a) through (d) below.
(a) Establish a horizontal grid line as dc average of test point A4TP4 (fig. 2) by
setting range calibrator FUNCTION switch to STANDBY.
(b) Position CH 1 trace on the line.
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