DPO6000
，
MPO6000 Series Digital Phosphor Oscilloscope Instruction V1.1
- 38 -
If the high level and low level are both in the scope of the waveform,then the waveform
triggers on the rising or falling edge at the same time.
If the high level is in the scope of the waveform,the low level isn’t in the scope of the
waveform,then the waveform only triggers on the rising edge.
If the high level isn’t in the scope of the waveform,the low level is in the scope of the
waveform,then the waveform only triggers on the falling edge.
Press
【
Trig Menu
】
on the frontal panel to turn on the trigger function menu.
【
Type
】
select
window
and press V0 to confirm.
【
Data source
】
select
CH1~CH4
to be trigger source.
【
Level
】
enable high/low level setting function,press this softkey again to select low
level(V2)or high level(V1),then rotate trigger level knob to adjust the vertical position of
the high(low)level.The corresponding displacement information changes in real time and
is displayed in the status bar in the upper right corner of the screen.
【
Mode
】
select the 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
acquire the stable trigger.
6.5.7.Pattern Trigger
Identify a trigger condition by looking for a specified pattern. This pattern is a logical
combination of ‘‘AND’’ and ‘‘OR’’ of channels. Each channel can have a value of high (1),
low (0) or invalid (X). In the pattern trigger mode, the oscilloscope will compare the actual
pattern and the preset pattern of the channel, and trigger on the last channel that is the
same as the preset pattern(the pattern is true).If the pattern type of each channel is fixed
or all channels are set to "invalid", the oscilloscope will not trigger.
Press
【
Trig Menu
】
on the frontal panel to turn on trigger function menu.
【
Type
】
select
Pattern
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.
【
Current channel pattern
】
Set the pattern of current channel,press V0 to confirm.The
preset pattern of the channel is displayed at the upper left of the screen.
1: set the pattern of the channel to be “H”,namely the level is higher than the trigger level
of the channel.
0: set the pattern of the channel to be “L”,namely the level is lower than the trigger level of
the channel.
X: set the pattern of the channel to be “X”,namely this channel isn’t used as a part of the
pattern.
【
Mode
】
select acquisition mode(auto
、
normal),press V0 to confirm.
