Delayed SweepSingle Trace Display.

vertical amplifier to place the display in the lower half of the

graticule area. Then press the VERT MODE ALT switch in. The

dual trace display should appear on the crt. Note that the VERT

MODE CHOP switch would produce a somewhat similar display.

Finally, set the TIME/DIV OR DLY TIME switch on the dual time

base for a display of the desired number of cycles of the input

signal.

(c) Delayed SweepSingle Trace Display. The following

procedures will produce a delayed sweep display of the input

signal to one vertical amplifier on one trace by the dual time

base.

Perform the complete singletrace display procedure as outlined

in paragraph 2d(2)(a) on page 150, with the exception of setting

the TIME/DIVE OR DLY TIME switch on the dual time base for a

display of the desired number of cycles of the input signal.

Instead, set the TIME/DIV OR DLY TIME switch so that the portion

of the sweep to be magnified is near the center of the graticule

area. Now pull the delayed time/division switch out to the stop

and turn it clockwise to a higher rate setting (to perhaps the

second or third position; this will be adjusted later). One

portion of the trace should be displayed at a higher intensity

level. If necessary, adjust the INTENSITY potentiometer for the

desired viewing level. Now adjust the DELAY TIME MULT dial

potentiometer to move the intensified portion of the trace to

cover the portion of the display to be examined. Then adjust

the settings of the TIME/DIV OR DLY TIME switch, and the delayed

time/division switch, for desired sweep rates for the main and

delayed sweeps. Finally, push the delayed time/division switch

in. The section of the trace that was previously intensified

(delayed sweep) should be expanded to cover the entire graticule

horizontal scale.

If the waveform segment to be examined is not steady, it may be

necessary to turn the DLY'D TRIG potentiometer counterclockwise

(out of the switch detent) to allow the delayed sweep triggering

on some portion of the signal to be examined. In that case, the

point on the signal at which the triggering occurs is selectable

by the position of the DLY'D TRIG potentiometer.

152