Hioki 8860-50, Instruction Manual

Page: 162 / 490

6.7 Triggering by Analog Signals
150
A trigger can be applied when the input signal crosses a specified trigger level
(voltage threshold). The direction in which the signal crosses the threshold is
specified by the trigger slope setting (rising

, falling

or both

).
6.7.2 Triggering When Crossing a Voltage Threshold
(Level Trigger)
Apply a trigger when the input sig-
nal exceeds 200 mV or falls below
–600 mV.
Trigger Source: OR
[Expanded] setting (Apply multiple
triggers to one channel)
No.1
Type......... Level (Level Trigger)
Ch ............ 1-1 (Unit 1 – Channel 1)
Level ....... 200 mV
Slope
 
(rising)
No.2
Type......... Level (Level Trigger)
Ch ............ 1-1 (Unit 1 – Channel 1)
Level ....... –600 mV
Slope........

(falling)
Level Trigger ([Normal]/[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.
For the [Normal] setting, match the number of the
channel to which the trigger applies.
2
Select the trigger type.
CURSOR Move the cursor to the [Type] item.
F1 to F8 Select [Level] (Level Trigger).
3
Select a channel (only with the [Expanded] setting).
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.

A trigger occurs when the signal crosses the
threshold on the upslope (rising edge

).
(default setting)

A trigger occurs when the signal crosses the
threshold on the downslope (falling edge

).

A trigger occurs when the signal crosses the
threshold on either the upslope or downslope
(

).
Note: The trigger point occurs one sample af-
ter the criterion is met.
Timebase 2 sampling data is also one sample
later than that of Timebase 1.
1
200 mV
0 V
-600 mV
T
Trigger No.
Setting Example
Start
Measurement
T
If the signal is outside of the
specified threshold levels at
the start of measurement, no
triggering occurs.
Triggering occurs when the signal
crosses the threshold.
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