Table of Contents
Advertisement
(a)
\
Trigger point
"NORM"
(b)
Trigger
point
OBIXe
Trigger
point
Fig. 11
LEVEL control
H
(1) |
\
[_\
[~
O
ce)
-
+
Trigger
point
Ad
©.
Input signal changed
into a pulse waveform.
re ~\
Readjust level
(a) When the trigger level is set
around the center of the waveform.
~ My
(1)
F Trigger point
'
t
\ a
'
'
bot cceceeen
af teat
Chat
Sweep stops with no trigger.
(2)
Same level as (1)
(3)
\ Z)
+
Highest level
(b) When the trigger level is set to
the ''—'" side of the waveform
(Mode switch set to '"NORM'')
(4)
Triggering without
setting level
(c) Mode switch set to ''FIX''.
Fig. 12
18
5. Adjust the
A SWEEP/TIME DIV control @ to obtain an
appropriate display. Now a normal sweep display is ob-
tained.
(2) MAGNIFIED SWEEP OPERATION
Since merely shortening the sweep time to magnify a por-
tion of an observed waveform can result in the desired por-
tion disappearing off the screen, such magnified display
should be performed using the MAGNIFIED
SWEEP.
Using the <® POSITION @ control, adjust the desired por-
tion of waveform to the CRT. Pull the PULL x 10 MAG
control to magnify the display 10 times. For this type of dis-
play the sweep time is the SWEEP TIME/DIV setting divid-
ed by 10.
(3) ALTERNATE
SWEEP OPERATION
A sweep and B delayed sweep are usable in an alternating
fashion making it possible to observe both the normal and
magnified waveform simultaneously.
Procedure:
1. Set the HORIZ MODE to A and adjust for a normal wave-
form display.
2. Depress the HOLD OFF control @6) (AFTER DELAY) and
set the HORIZ MODE to ALT. Adjust TRACE SEPATA-
TION @ for easy observation of both the A and B traces.
The upper trace is the non-magnified portion of the wave-
form with the magnified portion super-imposed as an
intensified section. The lower waveform is the intensi-
fied portion displayed magnified.
3. The AREF/DELAY TIME POSITION @) control can be used
to continuously slide the magnified portion of the wave-
form across the A sweep period to allow magnification
of precisely the desired portion of waveform.
4. Set the HORIZ MODE to B to display the INT intensified
portion as a magnified B sweep.
(Fig. 14)
5. For Starts AFTER DELAY operation, apparent jitter in-
creases as magnification increases. To obtain a jitter free
display pull the HOLD OFF control out. In this ''Trigger-
able After Delay'' mode the A trigger signal selected by
the SOURCE switch @) becomes the B trigger source.
Advertisement
Table of Contents
