User Manual

6.7 Triggering by Analog Signals
149
6
Chapter 6 Trigger Settings
Triggering occurs when the input signal crosses the trigger level (threshold volt-
age) if its pulse width is shorter than the specified width.
Rising (
↑) or falling (↓) edge pulse width can be selected by Trigger Slope set-
ting.
6.7.5 Triggering by Pulse Width (Glitch Trigger)
Glitch Trigger (only with the [Expanded] setting)
To open the screen: Press the SET key → Select with the SUB MENU keys →Trigger Settings screen
See Screen Layout (
⇒ p. 33), To set from the Waveform screen (⇒ p. 161)
Operating Key Procedure
1
CURSOR
Move the highlight cursor to a trigger number to
be set.
2
Select the trigger type.
CURSOR
Move the cursor to the [Type] item.
F1 to F8
Select [Glitch].
3
Select a channel.
CURSOR
Move the cursor to the [Ch] item.
F1 to F8
Select a channel to which the trigger applies.
4
Select the trigger level.
CURSOR
Move the cursor to the [Level] item.
F1 to F8 or
SCROLL
Specify the trigger threshold voltage.
5
Select the trigger slope.
CURSOR
Move the cursor to the [Slope] item.
F1 to F8
Select either choice.
6
Set the glitch width.
CURSOR
Move the cursor to the [Width] item.
F1 to F8 or
SCROLL
Set the glitch width (in seconds).
7
Set the event count (as occasion demands)(⇒ p. 143).
When using the Memory function, or when using the Recorder func-
tion with [Timing] set to [Start & Stop]
Set the trigger to Start or Stop (⇒ p. 145).
↑ Glitch width is determined from rising (↑)
trigger slope.
↓ Glitch width is determined from falling (↓)
trigger slope.
Apply a trigger when the input sig-
nal pulse width is less than 500 ns
(glitch width)
No.1
Type ......... Glitch
Ch............. 1-1(Unit 1-Channel 1)
Level......... 1.5 V
Slope.........↑
Parameters
Width........
500 ns
1.5 V
3 V
0 V
Trigger Level
500 ns
T
Slope ↑
T T
Slope ↓
Trigger No.
About glitch width
The valid range for glitch width setting de
-
pends on the sampling period.
Setting Range:
Minimum width setting: At least twice th
e
sampling period
Maximum width setting: No more tha
n
4,000 times the sampling period
1
23 45 6 7
About the Trigger Point
The trigger point occurs one sample afte
r
the criterion is met. Timebase 2 samplin
g
data is also one sample later than that o
f
Timebase 1.
Setting Example