OD1402 - Lesson 1/Learning Event 1
The display modes are as follows:
o Main Sweep In MAIN SWEEP mode, the time base
switches are locked together and the time per division
(sweep rate) is bracketed by the black lines on the
TIME/DIV OR DLY TIME switch. Only the main time base
(sweep) generator operates in this mode.
o Intensified Sweep In this mode, both time base
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.