User Manual

6.8 Triggering by Logic Signals (Logic Trigger)
154
Trigger Mark
T
his mark appears when the
t
rigger setting is enabled.
Logic Trigger
To open the screen: Press the SET key → Select with the SUB MENU keys →Trigger Settings screen
See Screen Layout (
⇒ p. 33)
Operating Key Procedure
1
SHEET/PAGE
Select the [Logic] page.
CURSOR
Move the highlight cursor to a trigger number to
be set.
2
Set the AND/OR (trigger combinatorial logic) for logic
triggering.
CURSOR
Move the cursor to the [Trigger] item.
F1 to F8
Select either choice.
3
Set the trigger filter (as occasion demands) (⇒ p. 143).
CURSOR
Move the cursor to the [Filter] item.
F1 to F8
Set the filter width.
4
Set the trigger pattern.
CURSOR
Move the cursor to the [1] to [4] item.
F1 to F8
Select either choice.
OFF Logic triggering is disabled. (default setting)
OR
Triggering occurs when input signal logi
c
matches any setting in the trigger pattern.
AND
Triggering occurs only when input signal logi
c
matches all settings in the trigger pattern.
Off Trigger filtering is disabled.
(default setting)
0.1 to 10 Trigger filtering is enabled.
The filter width is set as a number of d
i-
visions.
Off Trigger filtering is disabled.
(default setting)
On Trigger filtering is enabled. Filter width i
s
10 ms (or 5 ms when the sampling rat
e
is 100 ns/S)
×
Ignore signal(default setting)
0 Trigger at LOW signal level.
1 Trigger at HIGH signal level.
0|1 Trigger when the signal level changes after
starting measurement (trigger criteria met just
once after starting measurement)
Trigger Pattern
T
Logic Channels
Lch A 1 1
Lch A 2 0
Lch A 3 X
Lch A 4 X
Example 2
Triggering occurs when the input
signal matches both of the following
criteria:
Channel 1 (L Ch A1): HIGH level
Channel 2 (L Ch A2): LOW level
Lch A
Trigger...... AND
[1, 2, 3, 4]: [1 0 × × ]
Trigger Pattern
T
T
Lch A 1 1
Lch A 2 0
Lch A 3 X
Lch A 4 X
Although L Ch A2 criteria are met, L Ch
A1 criteria are met first, so the trigger oc-
curs when L Ch A1 criteria are met.
Channels 1 to 4 of L Ch A
3
4
2
5 6
By selecting F1 [All Settings
]
in the [Lch] column, settings
can be made from a dialog
.
(⇒ p. 153)
T
Setting Example
Example 1
Trigger when the input signal
matches any of the following crite-
ria:
Channel 1 (L Ch A1): HIGH level
Channel 2 (L Ch A2): LOW level
Lch A
Trigger......OR
[1, 2, 3, 4]: [1 0 × × ]