Hitachi V-355 Operation Manual page 16

changes alternately corresponding to the signals
on CH 1 and CH2 to trigger the signal .
@
TRIG INput connector
Input terminal for use for external triggering signal.
-
@
Trigger LEVEL control
PULL ( ) SLOPE
This knob is used to decide at which portion of the wave­
form should the sweep be started by setting trigger level.
This knob is also enabled to switch SLOPE.
Depressed position (normal state) is for
PULL position (state in which the knob is protruding) is
E)
for SLOPE.
Explanation of trigger polarity SLOPE
Push
at time of
@SLOPE
Pull
at time of
SLOPE
8
©
SLOPE and
_
,'"
\
\
\.
Explanation of trigger LEVEL
_
+
0
(-,
At the time
o
,, - + \ A t
\
-
-/
@
Trigger MODE select switch
AUTO The instrume nt is brought into automatically
triggering sweep in which swe ep is always con­
ducted.
In the presence of triggered signal, normal
triggered sweep is obtained and the waveform
stands still . In the case of no signal or out of
trigge ring , sweep line will appear automatically .
This setting is convenient in usual cases.
NORM Triggere d sweep is obtained and sweep is con­
ducte d only when triggering is effected. No
sweep line will appear in the case of no signal or
out of synchronization . Use this mode when
effecting synchronization to a very low fre-
of (±J SLOPE
the time
of8 SLOPE
13