Trio CS-2100A, Instruction Manual

Page: 16 / 42

OPERATION
Note t h a t for this type of operation b o t h the DELAY T I M E
M U L T I P L I E R and TRIG LEVEL affect the start of the s w e e p
so that the delay t i m e is used as a reference point.
14] ALTERNATING SWEEP OPERATION
A S w e e p and B S w e e p are usable in an alternating fashion m a -
king it possible t o observe both the n o r m a l and magnified w a -
v e f o r m simultaneously.
Procedure:
1. Set t h e H O R I Z O N T A L DISPLAY to A and adjust the CS-
2 1 0 0 A for a n o r m a l w a v e f o r m display.
2. Pull out the SLOPE P U L L S T A R T S AFTER DELAY control
and set the H O R I Z O N T A L D I S P L A Y to ALT. A d j u s t
TRACE SEP (30) for easy observation of b o t h the A and B
traces.
The upper trace is the n o n - m a g n i f i e d portion of the w a v e -
f o r m w i t h the m a g n i f i e d portion s u p e r - i m p o s e d as an in-
tensified section. The lower w a v e f o r m is the intensified
portion displayed magnified.
B INTENSITY can be used to adjust the intensity of the su-
per-imposed w a v e f o r m .
3. The DELAY T I M E M U L T I P L I E R can be used to conti-
nuously slide the magnified portion of the w a v e f o r m a-
cross the A S w e e p period to a l l o w magnification of preci-
sely the desired portion of w a v e f o r m .
4. A p p a r e n t display jitter increases w i t h increased magnifica-
t i o n as is the case w i t h delayed s w e e p discussed above.
By cancelling the magnified operating m o d e by pushing in
the SLOPE P U L L S T A R T S AFTER DELAY control the B
LEVEL control can be used t o set the trigger point.
B Sweep
1 5] DUAL SWEEP OPERATION
U p until n o w w e have discussed using the B S w e e p to display
only a Delayed S w e e p of the A S w e e p signal. In the D U A L
mode A and B S w e e p are performed independently so t h a t t w o
non t i m e - r e l a t e d signals can be observed at one time.
Procedure:
The A S w e e p and B S w e e p are controlled by the A trigger a n d
B trigger controls respectively.
W h i l e triggering of A a n d B S w e e p s independently using the in-
put signals themselves is quite simple a n d presents no particu-
lar problems, use of a c o m m o n trigger source or use of A to
trigger B and vice versa can result in s o m e impossible trigge-
ring conditions for signals t h a t are not related to each other in a
t i m i n g sense.
For D U A L operation the A and B S w e e p s alternate regardless
of the setting of the A L T and C H O P switches.
This A S w e e p / B S w e e p / T r i g g e r Source/Vertical M O D E rela-
tionships are outlined in the f o l l o w i n g tables.
A S O U R C E ( A S w e e p )
• N o t e 1: A S w e e p is triggered by alternate signals f r o m CH 1
and C H 2 , but only the CH1 signal on the display is
triggered.
* N o t e 2: A S w e e p is triggered by alternate signals f r o m CH 1
C H 4 , but only the CH 1 and CH3 signals on the
display are triggered.
* N o t e 3: A S w e e p is triggered by CH1 signal and CH1 and
C H 3 signals are displayed.
* N o t e 4: A S w e e p is triggered by C H 3 signal and C H 1 and
C H 3 signals are displayed.
• N o t e 5: B S w e e p is triggered by CH2 signal and C H 2 a n d
C H 4 signals are displayed.
• N o t e 6: B S w e e p is triggered by C H 4 signal but C H 2 a n d
C H 4 signals are displayed.
• N o t e 7: If there is no t i m e relation b e t w e e n CH1 and C H 2
input, triggereing is not possible.
Please bear in m i n d these relationship w h e n using D U A L mode
operation w i t h the C S - 2 1 0 0 A .
4 - 3
B SOURCE (B Sweep)
M O D E
C H I C H 2 D U A L A D D Q U A D
V . M O D E
C H I C H 2
C H 1 . CH2
ALT { * 1 )
CH1+CH2
C H I CH4
A L T ( * ( 2 )
Trigger Source
V . M O D E
C H I C H 2 C H I CH1+CH2 C H I , C H 3
CRT Display
s
0
u
C H I
C H I C H I C H I C H I C H I
Trigger Source
s
0
u
C H I
C H I C H 2 C H I
CH1+CH2
C H I C H 3
ALT ( * 3)
CRT Display
R
C H 2
C H 2 C H 2 C H 2 ( * 7 ) C H 2
C H 2 ( * 7 )
Trigger Source
C
E
C H 2
C H I C H 2
C H I CH1+CH2
C H I . CH 3
A L T
CRT Display
E X T
C H 3 C H 3 C H 3 C H 3 C H 3
Trigger Source
C H 3
C H I C H 2 C H I
C H 1 + C H 2
C H I , CH 3
ALT ( * 4 )
CRT Display
M O D E
C H I C H 2
D U A L A D D Q U A D
C H I
C H I C H I CH1(* 7) C H I C H 1 ( * 7 )
Trigger Source
S
0
u
C H I
C H I C H 2 C H 2 CH1+CH2 CH2.CH4
CRT Display
S
0
u
C H 2
C H 2
C H 2 C H 2 C H 2 C H 2
Trigger Source
R
C
E
C H 2
C H I
C H 2 C H 2 CH1+CH2
C H 2 . CH4
( *
">)
CRT Display R
C
E
E X T
C H 4 C H 4 C H 4 C H 4 C H 4
Trigger Source
C H 4
C H I C H 2 C H 2 CH1+CH2
C H 2 . CH4
( # 6 )
CRT Display
Intensified zone to be magnified
(A Sweep)
ALT