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3. Adjust the channel 1 and 2 gain controls for a conve-
nient, easy-to-read display.
4. T h e resulting pattern, called a Lissjous' pattern, s h o w s
the ratio between the t w o frequencies.
U n k n o w n frequency t o
Vertical Input, S t a n d a r d
frequency to Horizontal Input
S e e note
S e e note
Note: A n y one of t h e s e figures, depending upon phase relationship
Fig.
QUAD TRACE APPLICATION
T h e sensitivities of channel 1 to channel 4 are calibrated
and each channel has 1 0 0 MHz band width. T h e trigger
signals of channnel 3 and channel 4 can be obtained from
each preamplifiers.
T h i s scope can be used not only for external triggering but
also for checking quad-trace at'a time.
Application
1. Checking logic signal timing.
2. Monitoring video signal.
3. Measuring audio signal gain and phase characteristics.
T h e details of the logic signal timing checking are d e -
scribed below.
Logic s i g n a l t i m i n g i n d i c a t i o n
Control setting
Vertical MODE:
HORIZ D I S P L A Y :
A. S O U R C E :
T o obtain stable synchronization, synchronize with the
longest period channel (in this case, channel 3).
Fig.
3 0
A P P L I C A T I O N
Ratio of u n k n o w n
to standard
1 / 2 : 1
1 : 1
1 / 2 : 1
6 : 1
3 5
QUAD, A L T
A
C H 3
3 6
In the above application, w h e n the HORIZ, D I S P L A Y
s w i t c h is select to A L T , the main and delay s w e e p w a v e -
forms are displayed on the C R T at a time. T h e portion in
w h i c h the intensity is modulated is enlarged to enable
easy checking.
Main and delay s w e e p w a v e f o r m s (Magnified by 10
times)
Control setting
Vertical MODE:
A. S O U R C E :
HORIZ D I S P L A Y :
S T A R T S A F T E R D E L A Y :
Fig.
DUAL S W E E P APPLICATION
In this mode, t w o trigger s w e e p circuit s y s t e m s can dis-
play different period signals without intensity difference.
V i d e o F R A M E a n d LINE s i g n a l w a v e f o r m s
Control setting
Input signal:
C H 1
HORIZ D I S P L A Y :
D U A L
A C O U P L I N G :
V I D E O
B. COUPLING:
A C
B. S W E E P T I M E / D I V : 2 0 fis
In single trace display mode, the A and B. S O U R C E
s w i t c h operation is a s described in the front panel item.
For dual
or quad
trace display
next item.
Fig.
QUAD, A L T
C H 3
A L T
P U L L (ON)
Main s w e e p
Delay s w e e p
3 7
Vertical MODE:
C H 1
A. S O U R C E :
C H 1
B. S O U R C E :
C H 1
A S W E E P T I M E / D I V :
5 m s
mode, refer to the
A s w e e p
B s w e e p
3 8
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