User Manual

6.7 Triggering by Analog Signals
147
6
Chapter 6 Trigger Settings
Two types of period triggering are available:
• In-Period Trigger [Peri-In]
By measuring the rising and falling period at a reference voltage, apply a trig-
ger when the input signal enters specified period limits.
• Out-of-Period Trigger [Peri-Out]
By measuring the rising and falling period at a reference voltage, apply a trig-
ger when the input signal exits specified period limits.
6.7.4 Triggering by Period Variance (Period Trigger)
Period 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 [Peri-In] or [Peri-Out].
3
Select a channel.
CURSOR
Move the cursor to the [Ch] item.
F1 to F8
Select a channel to which the trigger applies.
4
Specify the reference voltage.
CURSOR
Move the cursor to the [Level] item.
F1 to F8 or
SCROLL
Set the reference voltage at which to measure
the period.
5
Select the trigger slope.
CURSOR
Move the cursor to the [Slope] item.
F1 to F8
Select either choice.
6
Set the period range (upper and lower threshold values).
CURSOR
Move the cursor to the [Upper] or [Lower] item.
F1 to F8 or
SCROLL
Set the upper and lower threshold values.
↑ Measure the threshold period at the rising (↑
)
trigger slope.
↓ Measure the threshold period at the falling (↓
)
trigger slope.
Apply a trigger when the input sig-
nal is outside of the range 0.9 to 1.1
ms
No.1
Type ......... Peri-Out
Ch............. 1-1 (Unit 1-Channel 1)
Level......... 0 V
Slope........
↑
Parameters
Upper ....... 1.1 ms
Lower ....... 900
μs
0 V
T
0.95 ms 1.05 ms
1.20 ms
1.10 ms
Period Upper
Threshold
Reference Voltage Level
Out of Period Range
Trigger No.
1
234 5 678
About the Trigger Point
The trigger point occurs one sample after
the criterion is met. Timebase 2 sampling
data is also one sample later than that of
Timebase 1.
About period range settings (
⇒ p. 148)
Setting Example
Within Period
Range