ELECTRONIC PRINCIPLES - OD1647 - LESSON 1/TASK 3
generator by horizontally expanding the center centimeter of the
display 10 times.
(i) TIME/DIV OR DLY TIME Switch. Provides for the selection
of the basic sweep rate of the main sweep generator, for
operation of the main sweep display mode and the selection of
the delay time (to be multiplied by the DELAY TIME MULT 10turn
dial setting) for operation in the intensified or delayed sweep
display modes. The MAG switch must be in the X1 position (IN)
and the VARIABLE potentiometer/switch must be in the CAL
position for the indicated sweep rate.
(j) Delayed Time/Division Switch, Intensify Switch. Selects
the sweep rate of the delayed sweep generator for operation in
the delayed sweep and intensified display modes. The VARIABLE
control must be in the extreme clockwise or CAL position and the
MAG switch must be in the XI position (IN) for the indicated
The interrelationships between the TIME/DIV
OR DLY switch, the delayed lime/division
switch, and the intensify switch is complex.
For full and efficient use of these
functions, the following determinations of
the display modes must be understood:
1 MAIN SWEEP. In the 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.
2 INTENSIFIED SWEEP. In the intensified sweep mode, both
time base generators are used, but only the main sweep is
displayed. The delayed sweep generator unblanking signal is
used to intensify (brighten) the main sweep display when the
delayed sweep generator runs. The main Lime 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