User`s manual

1-8
IM 701610-01E
1.3 Setting a Trigger
Trigger Type <Chapter 6>
There are two principal trigger types which you can use with the instrument.
Simple trigger
Enhanced trigger
Simple Trigger → Sections 6.5 to 6.7
This is an edge trigger and the one which is used normally.
Enhanced Trigger → Sections 6.8 to 6.14
This is a complex trigger. The following seven types of enhanced trigger are available.
A→B(N) trigger
A Delay B trigger
Pattern trigger
Width trigger
OR Trigger
Window trigger
TV trigger
Edge Trigger → Section 6.5
The edge trigger is the simplest type of trigger and uses a single trigger source to
activate a trigger. A trigger is activated when the trigger source exceeds (rises above) or
drops (falls) below the preset trigger level*.
In addition to input signals (CH1 to CH4, or CH1 and CH2 for the DL1620), the external
trigger input signal, the commercial power supply signal that is used by the instrument
can be used as a trigger source.
* “A trigger is activated” refers to the condition in which trigger conditions are satisfied and a
waveform is displayed.
Trigger Level
A trigger is activated at this point if
“Rise” ( ) is selected.
Trigger Source
A → B(N) Trigger (Enhanced Trigger) → Section 6.8
This function activates a trigger the Nth time condition B becomes true after condition A
has become true.
L
HL L
H
HHHHLLL
H
CH1
CH2
CH1
CH2
When pattern A: CH1 = L, CH2 = L, Enter, When patternB: CH1 = H, CH2 = H, Enter, N = 3
L: Low level, H: High level
Trigger
LH HL L
B(1) B(2) B(3)
Pattern A is True