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@> SLOPE Control, B MODE S w i t c h
Used to select delay sweep mode by SLOPE switch.
SLOPE: Selects positive going ( + ) or negative going ( - ) .
+ equals most positive point of triggering and
— equals most negative point of triggering.
B MODE:
PULL-STARTS AFTER DELAY
B sweep is triggered immediately after the delay
set by A SWEEP TIME/DIV
MULT controls.
NORM-TRIGGER
B sweep starts immediately after the delay time
selected by the DELAY TIME MULT and SWEEP
TIME/DIV controls. Even when this switch is in
NORM position with the trigger MODE switch set
to A U T O , turning the trigger LEVEL clockwise or
counterclockwise release the trigger and set the
scope to B S T A R T S AFTER DELAY operation.
@> TRIG'D Lamp
Green LED lights for duration of triggered A sweep; shows
when trigger LEVEL control is properly set to obtain trigger-
ing.
©
S O U R C E Switch
Five-position lever switch; selects triggering source for the
sweep, with following positions;
V. MODE: The trigger source is determined
MODE selection.
C H 1 :
Channel 1 signal is used as a trigger
source.
C H 2 :
Channel 2 signal is used as a trigger
source.
1 0
Fig. 3
and DELAY TIME
by vertical
ADD:
The algebraic sum of channel 1 and
channel 2 signal is the trigger source. (If
C H 2
INV
becomes the trigger source.)
ALT:
Display is alternately triggered by CH1
and C H 2 .
CHOP:
The display cannot
with the input signal since the chopping
signal becomes the trigger source.
C H 1 :
Sweep
is
triggered
regardless of vertical MODE selection.
CH2:
Sweep
is
triggered
regardless of vertical MODE selection.
EXT:
Sweep is triggered by signal applied to EXT TRIG
INPUT jack @ .
LINE:
Sweep is triggered by line voltage.
@
COUPLING Switch
Five-position lever switch; selects coupling for sync trigger
signal.
A C :
Trigger is ac coupled. Blocks dc component of in-
put signal; most commonly used position.
\f
\
Sync signal is coupled through high-pass filter to
REJ
eliminate low-frequency components for stable
triggering of high frequency signals.
HFRE,:
Sync signal is coupled through a low -pass filter
to
eliminate
high-frequency
stable triggering of low frequency signals.
DC:
The sync signal is dc coupled for sync which in-
cludes the effects of dc components.
VIDEO:
For synchronization of video signals. The posi-
tion of the A SWEEP TIME/DIV control deter-
mines whether FRAME or LINE is to be syn-
engaged,
the
difference
be synchronized
by
channel
1
signal
by
channel
2
signal
components
for
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