Variable (Cal) Knob

generators are used, but only the main sweep is

displayed. One sweep generator signal is used to

brighten (intensify) the main sweep display. The main

time base sweep rate is bracketed by the black lines on

the TIME/DIV OR DLY TIME switch. The delayed time base

sweep rate is selected by pulling the DELAYED

TIME/DIVISION switch out and turning it clockwise. With

the switch pulled out, an intensified zone appears on

the main sweep. The purpose of the INTENSIFIED SWEEP

mode is to locate the portion of the trace that is to be

displayed in the DELAYED SWEEP mode.

o Delayed Sweep In this mode, the DELAYED

TIME/DIVISION switch is pushed in. The part of the

display shown in the intensified zone is then displayed

on the DELAYED SWEEP and expanded over the entire

screen. The delayed sweep mode enables the operator to

select any part of the main sweep display and expand

that part for more careful study.

VARIABLE (CAL) Knob. When this switch is in the counterclockwise

direction, it enables you to vary the calibrated settings of the

TIME/DIV OR DLY TIME switch by at least 12.5 seconds per division.

When the control is set to the extreme clockwise setting, the

switch is operated to select calibrated deflection factors.

Dly'd Trig (Delayed Trigger) Knob. Selects mode and level for

delayed triggering. When the control is turned to extreme

clockwise, delayed sweep runs immediately following the delay time.

Delayed SLOPE, COUPLING, and SOURCE switches are not activated.

When the switch is turned counterclockwise, the delayed sweep is

triggerable. The LEVEL control then selects the point on the

trigger signal at which the delayed sweep is triggered. Delayed

SLOPE, COUPLING, and SOURCE switches are activated.

11