Hioki 8860-50, Instruction Manual

Page: 167 / 490

6.7 Triggering by Analog Signals
155
6
Chapte
r 6
T
rigger Setting
s
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. 35), To set from the Waveform screen (p. 167)
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. 149).
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. 151).

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 the
sampling period
Maximum width setting: No more than
4,000 times the sampling period
1
2 3 4 5 6 7
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.
Setting Example