DPO6000
，
MPO6000 Series Digital Phosphor Oscilloscope Instruction V1.1
- 39 -
【
Holdoff
】
set the holdoff time.
Trigger level knob
:press channel button first then remove trigger level knob to modify the
trigger level value of the corresponding channel. Trigger symbol moves up and down
according to the rotation of the knob.Rotate the trigger level knob to adjust the trigger level
to acquire the stable trigger.
For example,set the trigger level of CH1.Press CH1 softkey,use trigger level to modify the
level.
Digital channel
:can change trigger threshold of the digital channel by setting the threshold
voltage.
6.5.8.Interval Trigger
The oscilloscope trigger when the interval between two continuous rising(or falling) edges
satisfies the setting conditions(<, >, !=, =).
Press
【
Trig Menu
】
on the frontal panel to turn on trigger function menu.
【
Type
】
select
interval
,and press V0 to confirm.
【
Data source
】
select
CH1~CH4
or
LA
to be trigger source.
Note
:when use LA to be trigger source,LA must be inserted.
【
Slope
】
select the positive polarity or negative polarity of the trigger.
【
When
】
select the trigger conditions(>
、
<
、
=
、！
=),and press V0 to confirm.
【
the same
with pulse trigger
】
【
Time
】
set pulse width time
【
8ns~10s
】
.
【
Mode
】
select acquisition mode(auto
、
normal),press V0 to confirm.
【
Holdoff
】
set the holdoff time.
Trigger level knob
:analog channel can modify the trigger level value. Trigger symbol
moves up and down according to the rotation of the knob.Rotate the trigger level knob to
adjust the trigger level to acquire the stable trigger.
Digital channel
:can change trigger threshold of the digital channel by setting the threshold
voltage.
6.5.9.Under Amp Trigger
This trigger mode is used to trigger pulses that pass through one trigger level but fail
to pass through the other trigger level as shown in the figure below.
The positive runt pulses pass the low level and fail to pass the high level.
The negative runt pulses pass the high level and fail to pass the low level.
