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L E V E L S L O P E , P U L L FIX Controls
L E V E L :
Rotation adjusts point on w a v e f o r m w h e r e A
s w e e p starts. W h e n C O U P L I N G s w i t c h is s e -
lected in V I D E O , the trigger level adjustment
has no effect.
S L O P E , P U L L FIX:
Adjusts the slope of the A trigger signal.
+equals most positive point of triggering and
- e q u a l s most negative point of triggering.
W h e n the control is pulled out the F I X mode
is selected for auto level adjustment, under
w h i c h c i r c u m s t a n c e s outer Trigger L E V E L
control no longer has any effect.
(§) T R I G ' D Lamp
Green L E D lights for duration of triggered A s w e e p ;
s h o w s w h e n trigger L E V E L control is properly set to
obtain triggering.
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C H 3 or A E X T T R I G J a c k
Input terminal of channel 3 signal or A external trigger
signal.
Channel 3 signal may be observed s i m u l -
taneously w i t h channel 1 , 2 and 4 signals w h e n the
vertical M O D E s w i t c h is selected in QUAD.
W h e n the S O U R C E s w i t c h is set to either E X T (CH3)
1 / 1 or 1 / 1 0 , s w e e p is triggered by this input signal.
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S O U R C E S w i t c h
Four-position lever s w i t c h ; selects the triggering source
for the B s w e e p , with following positions;
C H 1 :
B s w e e p is triggered by channel 1 signal.
C H 2 :
B s w e e p is triggered by channel 2 signal.
1 / 1 :
B s w e e p is triggered by channel 4 signal.
1 / 1 0 :
B s w e e p is triggered by channel 4 signal atten-
uated to 1 / 1 0 .
(§) C O U P L I N G S w i t c h
Four-position
lever s w i t c h ;
trigger signal.
A C :
Trigger is a c coupled. Blocks dc component of
input signal.
L F R E J :
Trigger is coupled through a high-pass filter to
eliminate low frequency components for stable
triggering of high frequency signals.
H F R E J :
Trigger is coupled through a l o w - p a s s filter to
eliminate high frequency components for s t a -
ble triggering of low frequency signals.
DC:
Trigger is dc coupled for s y n c w h i c h includes
the effects of dc components.
<§) L E V E L , S L O P E , P U L L S T A R T S A F T E R D E L A Y C o n -
trols
L E V E L :
Rotation adjusts point
B s w e e p starts.
S L O P E : Adjust
the slope
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C O N T R O L S A N D I N D I C A T O R S
selects
coupling
for B
on w a v e f o r m
where
of the B trigger signal,
+equals
most positive point of triggering
and - e q u a l s most negative point of trigger-
ing. For B trigger operation it must be set in
its pushed-in position.
P U L L S T A R T S A F T E R D E L A Y :
W h e n it is pulled out, the B s w e e p starts
immediately after the delay time selected
by the D E L A Y T I M E M U L T and A S W E E P
T I M E / D I V control, regardless of the trigger
L E V E L setting. Even w h e n this s w i t c h is in
position with the T R I G MODE s w i t c h set to
A U T O , turning the trigger L E V E L c l o c k w i s e
or counterclockwise release the trigger and
set the scope to B S T A R T S A F T E R D E L A Y
operation.
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T R I G ' D Lamp
Green L E D lights for duration of triggered B s w e e p ;
s h o w s w h e n trigger L E V E L control is properly set to
obtain triggering.
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C H 4 or B E X T T R I G J a c k
Input terminal for the channel 4 signal or B external
trigger signal. Channel 4 signal may be observed
simultaneously w i t h channel 1 , 2 and 3 signals w h e n
the vertical M O D E s w i t c h is selected in QUAD.
W h e n the S O U R C E s w i t c h is set to either E X T (CH4)
1 / 1 , or 1 / 1 0 , s w e e p is triggered by this input signal.
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T R I G M O D E S w i t c h
Push
button
s w i t c h
assembly; selects
mode.
A U T O :
Triggered s w e e p operation.
signal is present, automatically generates
s w e e p (free runs in absence of trigger s i g -
nal.)
NORM: Normal triggered s w e e p operation. No trace
is presented w h e n a proper trigger signal is
not applied.
S I N G L E : Single s w e e p operation. Note that in this
mode, simultaneous observation of both the
A and B s w e e p s is not possible.
N O T E ;
For dual or quad trace, single s w e e p opera-
tion, vertical M O D E must not be set to A L T .
Use the CHOP mode instead.
R E S E T : W h e n T R I G M O D E s w i t c h is selected to
S I N G L E mode, pushing the R E S E T
initiates a single s w e e p w h i c h will begin
w h e n the next s y n c trigger occurs.
triggering
W h e n trigger
button
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