How To Set The Channels - Owon VDS1022l User Manual

Video Trigger
Choose Mode as "Video" to trigger on fields or lines of NTSC, PAL or SECAM standard video signals.
(1) Select video modulation: NTSC, PAL or SECAM.
(2) Set trigger synchronization: Line, Field, Odd filed, Even filed or Line Number. When "Line Number" is selected, you can set the line
number.
(3) Set Hold Off. About the setting method, refer to
Slope Trigger
Choose Mode as "Slope" to set the oscilloscope as the positive/negative slope trigger within the specified time.
(1) Select slope condition.
(2) Set slope time.
(3) Set the High level upper limit and Low level lower limit.
(4) Set Trig Mode and Hold Off. About the setting method, refer to
Slew rate = (High level - Low level) / Settings
Pulse Width Trigger
Choose Mode as "Pulse". Pulse trigger occurs according to the width of pulse. The abnormal signals can be detected through setting up the pulse
width condition.
(1) Select pulse width condition and set time.
(2) Set trigger level.
(3) Set Trig Mode and Hold Off. About the setting method, refer to
Alternate trigger
Trigger signal comes from two vertical channels when alternate trigger is on. This mode is used to observe two unrelated signals. You can
choose different trigger modes for different channels. The options are as follows: edge, video, pulse or slope.
Set in Trigger menu:
1. In Trigger menu, choose "Alternate" (the chosen label has a
2. Choose Source.
3. Choose Mode.
About the setting method of Mode and parameters, refer to Single trigger.
Note: In alternate trigger, only one channel at most can be set as Video mode. You can not choose Video in both channels. For VDS1022(I), only
channel 1 can be set as video mode.
Set in Trigger window:
Instruction of Trigger mode icon in Trigger window:
Rise in Edge mode
Synchronic trigger in video line
Synchronic trigger in video odd filed
Rising in Slope
+Pulse Width

5.How to Set the Channels

Click to show Function menu, choose "Channel". You can also click
(Click , or for four- channel oscilloscope.)
Edge Trigger
.
Edge Trigger
Edge Trigger
mark).
Fall in Edge mode
Synchronic trigger in video field
Synchronic trigger in video even field
Falling in Slope
-Pulse Width
or
14
.
.
in the Channel window on the left bottom.